| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.brooklyn.test; |
| |
| import groovy.lang.Closure; |
| |
| import java.lang.reflect.Array; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Enumeration; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeoutException; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import org.apache.brooklyn.util.collections.MutableList; |
| import org.apache.brooklyn.util.collections.MutableSet; |
| import org.apache.brooklyn.util.exceptions.Exceptions; |
| import org.apache.brooklyn.util.javalang.JavaClassNames; |
| import org.apache.brooklyn.util.text.StringPredicates; |
| import org.apache.brooklyn.util.time.Duration; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.annotations.Beta; |
| import com.google.common.base.Predicate; |
| import com.google.common.base.Predicates; |
| import com.google.common.base.Supplier; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.Iterables; |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Sets; |
| |
| /** |
| * TODO should move this to new package brooklyn.util.assertions |
| * and TODO should add a repeating() method which returns an AssertingRepeater extending Repeater |
| * and: |
| * <ul> |
| * <li> adds support for requireAllIterationsTrue |
| * <li> convenience run methods equivalent to succeedsEventually and succeedsContinually |
| * </ul> |
| * <p> |
| * NOTE Selected routines in this class are originally copied from <a href="http://testng.org">TestNG</a>, to allow us to make assertions without having to |
| * introduce a runtime dependency on TestNG. |
| * </p> |
| */ |
| @Beta |
| public class Asserts { |
| |
| /** |
| * The default timeout for assertions - 30s. |
| * Alter in individual tests by giving a "timeout" entry in method flags. |
| */ |
| public static final Duration DEFAULT_TIMEOUT = Duration.THIRTY_SECONDS; |
| |
| private static final Logger log = LoggerFactory.getLogger(Asserts.class); |
| |
| private Asserts() {} |
| |
| private static final Character OPENING_CHARACTER = '['; |
| private static final Character CLOSING_CHARACTER = ']'; |
| |
| private static final String ASSERT_LEFT = "expected " + OPENING_CHARACTER; |
| private static final String ASSERT_MIDDLE = CLOSING_CHARACTER + " but found " + OPENING_CHARACTER; |
| private static final String ASSERT_RIGHT = Character.toString(CLOSING_CHARACTER); |
| |
| static String format(Object actual, Object expected, String message) { |
| String formatted = ""; |
| if (null != message) { |
| formatted = message + " "; |
| } |
| |
| return formatted + ASSERT_LEFT + expected + ASSERT_MIDDLE + actual + ASSERT_RIGHT; |
| } |
| |
| static private void failNotEquals(Object actual , Object expected, String message ) { |
| fail(format(actual, expected, message)); |
| } |
| |
| /** |
| * Assert that an object reference is null. |
| * |
| * @param object The object reference. |
| * |
| * @throws AssertionError if the assertion fails. |
| */ |
| static public void assertNull(final Object object) { |
| assertNull(object, null); |
| } |
| |
| /** |
| * Assert that an object reference is not null. |
| * |
| * @param object The object reference. |
| * |
| * @throws AssertionError if the assertion fails. |
| */ |
| static public void assertNotNull(final Object object) { |
| assertNotNull(object, null); |
| } |
| |
| /** |
| * Assert that an object reference is null. |
| * |
| * @param object The object reference. |
| * @param message The assertion error message. |
| * |
| * @throws AssertionError if the assertion fails. |
| */ |
| static public void assertNull(final Object object, final String message) { |
| if (null != object) { |
| throw new AssertionError(message == null ? "object reference is not null" : message); |
| } |
| } |
| |
| /** |
| * Assert that an object reference is not null. |
| * |
| * @param object The object reference. |
| * @param message The assertion error message. |
| * |
| * @throws AssertionError if the assertion fails. |
| */ |
| static public void assertNotNull(final Object object, final String message) { |
| if (null == object) { |
| throw new AssertionError(message == null ? "object reference is null" : message); |
| } |
| } |
| |
| /** |
| * Asserts that two collections contain the same elements in the same order. If they do not, |
| * an AssertionError is thrown. |
| * |
| * @param actual the actual value |
| * @param expected the expected value |
| */ |
| static public void assertEquals(Collection<?> actual, Collection<?> expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** |
| * Asserts that two collections contain the same elements in the same order. If they do not, |
| * an AssertionError, with the given message, is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(Collection<?> actual, Collection<?> expected, String message) { |
| if(actual == expected) { |
| return; |
| } |
| |
| if (actual == null || expected == null) { |
| if (message != null) { |
| fail(message); |
| } else { |
| fail("Collections not equal: expected: " + expected + " and actual: " + actual); |
| } |
| } |
| |
| assertEquals(actual.size(), expected.size(), message + ": lists don't have the same size"); |
| |
| Iterator<?> actIt = actual.iterator(); |
| Iterator<?> expIt = expected.iterator(); |
| int i = -1; |
| while(actIt.hasNext() && expIt.hasNext()) { |
| i++; |
| Object e = expIt.next(); |
| Object a = actIt.next(); |
| String explanation = "Lists differ at element [" + i + "]: " + e + " != " + a; |
| String errorMessage = message == null ? explanation : message + ": " + explanation; |
| |
| assertEquals(a, e, errorMessage); |
| } |
| } |
| |
| /** Asserts that two iterators return the same elements in the same order. If they do not, |
| * an AssertionError is thrown. |
| * Please note that this assert iterates over the elements and modifies the state of the iterators. |
| * @param actual the actual value |
| * @param expected the expected value |
| */ |
| static public void assertEquals(Iterator<?> actual, Iterator<?> expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** Asserts that two iterators return the same elements in the same order. If they do not, |
| * an AssertionError, with the given message, is thrown. |
| * Please note that this assert iterates over the elements and modifies the state of the iterators. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(Iterator<?> actual, Iterator<?> expected, String message) { |
| if(actual == expected) { |
| return; |
| } |
| |
| if(actual == null || expected == null) { |
| if(message != null) { |
| fail(message); |
| } else { |
| fail("Iterators not equal: expected: " + expected + " and actual: " + actual); |
| } |
| } |
| |
| int i = -1; |
| while(actual.hasNext() && expected.hasNext()) { |
| |
| i++; |
| Object e = expected.next(); |
| Object a = actual.next(); |
| String explanation = "Iterators differ at element [" + i + "]: " + e + " != " + a; |
| String errorMessage = message == null ? explanation : message + ": " + explanation; |
| |
| assertEquals(a, e, errorMessage); |
| |
| } |
| |
| if(actual.hasNext()) { |
| |
| String explanation = "Actual iterator returned more elements than the expected iterator."; |
| String errorMessage = message == null ? explanation : message + ": " + explanation; |
| fail(errorMessage); |
| |
| } else if(expected.hasNext()) { |
| |
| String explanation = "Expected iterator returned more elements than the actual iterator."; |
| String errorMessage = message == null ? explanation : message + ": " + explanation; |
| fail(errorMessage); |
| |
| } |
| |
| } |
| |
| /** Asserts that two iterables return iterators with the same elements in the same order. If they do not, |
| * an AssertionError is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| */ |
| static public void assertEquals(Iterable<?> actual, Iterable<?> expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** Asserts that two iterables return iterators with the same elements in the same order. If they do not, |
| * an AssertionError, with the given message, is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(Iterable<?> actual, Iterable<?> expected, String message) { |
| if(actual == expected) { |
| return; |
| } |
| |
| if(actual == null || expected == null) { |
| if(message != null) { |
| fail(message); |
| } else { |
| fail("Iterables not equal: expected: " + expected + " and actual: " + actual); |
| } |
| } |
| |
| Iterator<?> actIt = actual.iterator(); |
| Iterator<?> expIt = expected.iterator(); |
| |
| assertEquals(actIt, expIt, message); |
| } |
| |
| |
| |
| /** |
| * Asserts that two sets are equal. |
| */ |
| static public void assertEquals(Set<?> actual, Set<?> expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** |
| * Assert set equals |
| */ |
| static public void assertEquals(Set<?> actual, Set<?> expected, String message) { |
| if (actual == expected) { |
| return; |
| } |
| |
| if (actual == null || expected == null) { |
| // Keep the back compatible |
| if (message == null) { |
| fail("Sets not equal: expected: " + expected + " and actual: " + actual); |
| } else { |
| failNotEquals(actual, expected, message); |
| } |
| } |
| |
| if (!actual.equals(expected)) { |
| if (message == null) { |
| fail("Sets differ: expected " + expected + " but got " + actual); |
| } else { |
| failNotEquals(actual, expected, message); |
| } |
| } |
| } |
| |
| /** |
| * Asserts that two maps are equal. |
| */ |
| static public void assertEquals(Map<?, ?> actual, Map<?, ?> expected) { |
| if (actual == expected) { |
| return; |
| } |
| |
| if (actual == null || expected == null) { |
| fail("Maps not equal: expected: " + expected + " and actual: " + actual); |
| } |
| |
| if (actual.size() != expected.size()) { |
| fail("Maps do not have the same size:" + actual.size() + " != " + expected.size()); |
| } |
| |
| Set<?> entrySet = actual.entrySet(); |
| for (Iterator<?> iterator = entrySet.iterator(); iterator.hasNext();) { |
| Map.Entry<?, ?> entry = (Map.Entry<?, ?>) iterator.next(); |
| Object key = entry.getKey(); |
| Object value = entry.getValue(); |
| Object expectedValue = expected.get(key); |
| assertEquals(value, expectedValue, "Maps do not match for key:" + key + " actual:" + value |
| + " expected:" + expectedValue); |
| } |
| |
| } |
| |
| |
| /** |
| * Asserts that two arrays contain the same elements in the same order. If they do not, |
| * an AssertionError, with the given message, is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(Object[] actual, Object[] expected, String message) { |
| if(actual == expected) { |
| return; |
| } |
| |
| if ((actual == null && expected != null) || (actual != null && expected == null)) { |
| if (message != null) { |
| fail(message); |
| } else { |
| fail("Arrays not equal: " + Arrays.toString(expected) + " and " + Arrays.toString(actual)); |
| } |
| } |
| assertEquals(Arrays.asList(actual), Arrays.asList(expected), message); |
| } |
| |
| /** |
| * Asserts that two arrays contain the same elements in the same order. If they do not, |
| * an AssertionError is thrown. |
| * |
| * @param actual the actual value |
| * @param expected the expected value |
| */ |
| static public void assertEquals(Object[] actual, Object[] expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** |
| * Asserts that two objects are equal. |
| * @param actual the actual value |
| * @param expected the expected value |
| * |
| * @throws AssertionError if the values are not equal. |
| */ |
| static public void assertEquals(Object actual, Object expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** |
| * Asserts that two objects are equal. |
| * |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| * |
| * @throws AssertionError if the values are not equal. |
| */ |
| static public void assertEquals(Object actual, Object expected, String message) { |
| if((expected == null) && (actual == null)) { |
| return; |
| } |
| if(expected != null) { |
| if (expected.getClass().isArray()) { |
| assertArrayEquals(actual, expected, message); |
| return; |
| } else if (expected.equals(actual)) { |
| return; |
| } |
| } |
| failNotEquals(actual, expected, message); |
| } |
| |
| |
| /** |
| * Asserts that two objects are equal. It they are not, an AssertionError, |
| * with given message, is thrown. |
| * @param actual the actual value |
| * @param expected the expected value (should be an non-null array value) |
| * @param message the assertion error message |
| */ |
| private static void assertArrayEquals(Object actual, Object expected, String message) { |
| //is called only when expected is an array |
| if (actual.getClass().isArray()) { |
| int expectedLength = Array.getLength(expected); |
| if (expectedLength == Array.getLength(actual)) { |
| for (int i = 0 ; i < expectedLength ; i++) { |
| Object _actual = Array.get(actual, i); |
| Object _expected = Array.get(expected, i); |
| try { |
| assertEquals(_actual, _expected); |
| } catch (AssertionError ae) { |
| failNotEquals(actual, expected, message == null ? "" : message |
| + " (values at index " + i + " are not the same)"); |
| } |
| } |
| //array values matched |
| return; |
| } else { |
| failNotEquals(Array.getLength(actual), expectedLength, message == null ? "" : message |
| + " (Array lengths are not the same)"); |
| } |
| } |
| failNotEquals(actual, expected, message); |
| } |
| |
| |
| /** |
| * Asserts that two Strings are equal. If they are not, |
| * an AssertionError, with the given message, is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(String actual, String expected, String message) { |
| assertEquals((Object) actual, (Object) expected, message); |
| } |
| |
| /** |
| * Asserts that two Strings are equal. If they are not, |
| * an AssertionError is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| */ |
| static public void assertEquals(String actual, String expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** |
| * Asserts that two doubles are equal within a delta. If they are not, |
| * an AssertionError, with the given message, is thrown. If the expected |
| * value is infinity then the delta value is ignored. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param delta the absolute tolerable difference between the actual and expected values |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(double actual, double expected, double delta, String message) { |
| // handle infinity specially since subtracting to infinite values gives NaN and the |
| // the following test fails |
| if(Double.isInfinite(expected)) { |
| if(!(expected == actual)) { |
| failNotEquals(new Double(actual), new Double(expected), message); |
| } |
| } |
| else if(!(Math.abs(expected - actual) <= delta)) { // Because comparison with NaN always returns false |
| failNotEquals(new Double(actual), new Double(expected), message); |
| } |
| } |
| |
| /** |
| * Asserts that two doubles are equal within a delta. If they are not, |
| * an AssertionError is thrown. If the expected value is infinity then the |
| * delta value is ignored. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param delta the absolute tolerable difference between the actual and expected values |
| */ |
| static public void assertEquals(double actual, double expected, double delta) { |
| assertEquals(actual, expected, delta, null); |
| } |
| |
| /** |
| * Asserts that two floats are equal within a delta. If they are not, |
| * an AssertionError, with the given message, is thrown. If the expected |
| * value is infinity then the delta value is ignored. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param delta the absolute tolerable difference between the actual and expected values |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(float actual, float expected, float delta, String message) { |
| // handle infinity specially since subtracting to infinite values gives NaN and the |
| // the following test fails |
| if(Float.isInfinite(expected)) { |
| if(!(expected == actual)) { |
| failNotEquals(new Float(actual), new Float(expected), message); |
| } |
| } |
| else if(!(Math.abs(expected - actual) <= delta)) { |
| failNotEquals(new Float(actual), new Float(expected), message); |
| } |
| } |
| |
| /** |
| * Asserts that two floats are equal within a delta. If they are not, |
| * an AssertionError is thrown. If the expected |
| * value is infinity then the delta value is ignored. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param delta the absolute tolerable difference between the actual and expected values |
| */ |
| static public void assertEquals(float actual, float expected, float delta) { |
| assertEquals(actual, expected, delta, null); |
| } |
| |
| /** |
| * Asserts that two longs are equal. If they are not, |
| * an AssertionError, with the given message, is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(long actual, long expected, String message) { |
| assertEquals(Long.valueOf(actual), Long.valueOf(expected), message); |
| } |
| |
| /** |
| * Asserts that two longs are equal. If they are not, |
| * an AssertionError is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| */ |
| static public void assertEquals(long actual, long expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** |
| * Asserts that two booleans are equal. If they are not, |
| * an AssertionError, with the given message, is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(boolean actual, boolean expected, String message) { |
| assertEquals( Boolean.valueOf(actual), Boolean.valueOf(expected), message); |
| } |
| |
| /** |
| * Asserts that two booleans are equal. If they are not, |
| * an AssertionError is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| */ |
| static public void assertEquals(boolean actual, boolean expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** |
| * Asserts that two bytes are equal. If they are not, |
| * an AssertionError, with the given message, is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(byte actual, byte expected, String message) { |
| assertEquals(Byte.valueOf(actual), Byte.valueOf(expected), message); |
| } |
| |
| /** |
| * Asserts that two bytes are equal. If they are not, |
| * an AssertionError is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| */ |
| static public void assertEquals(byte actual, byte expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** |
| * Asserts that two chars are equal. If they are not, |
| * an AssertionFailedError, with the given message, is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(char actual, char expected, String message) { |
| assertEquals(Character.valueOf(actual), Character.valueOf(expected), message); |
| } |
| |
| /** |
| * Asserts that two chars are equal. If they are not, |
| * an AssertionError is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| */ |
| static public void assertEquals(char actual, char expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** |
| * Asserts that two shorts are equal. If they are not, |
| * an AssertionFailedError, with the given message, is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(short actual, short expected, String message) { |
| assertEquals(Short.valueOf(actual), Short.valueOf(expected), message); |
| } |
| |
| /** |
| * Asserts that two shorts are equal. If they are not, |
| * an AssertionError is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| */ |
| static public void assertEquals(short actual, short expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** |
| * Asserts that two ints are equal. If they are not, |
| * an AssertionFailedError, with the given message, is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| * @param message the assertion error message |
| */ |
| static public void assertEquals(int actual, int expected, String message) { |
| assertEquals(Integer.valueOf(actual), Integer.valueOf(expected), message); |
| } |
| |
| /** |
| * Asserts that two ints are equal. If they are not, |
| * an AssertionError is thrown. |
| * @param actual the actual value |
| * @param expected the expected value |
| */ |
| static public void assertEquals(int actual, int expected) { |
| assertEquals(actual, expected, null); |
| } |
| |
| /** |
| * Asserts that a condition is true. If it isn't, an AssertionError is thrown. |
| * @param condition the condition to evaluate |
| */ |
| public static void assertTrue(boolean condition) { |
| if (!condition) fail(null); |
| } |
| |
| /** |
| * Asserts that a condition is true. If it isn't, |
| * an AssertionError, with the given message, is thrown. |
| * @param condition the condition to evaluate |
| * @param message the assertion error message |
| */ |
| public static void assertTrue(boolean condition, String message) { |
| if (!condition) fail(message); |
| } |
| |
| /** |
| * Asserts that a condition is false. If it isn't, |
| * an AssertionError, with the given message, is thrown. |
| * @param condition the condition to evaluate |
| * @param message the assertion error message |
| */ |
| public static void assertFalse(boolean condition, String message) { |
| if (condition) fail(message); |
| } |
| |
| /** |
| * Fails a test with the given message. |
| * @param message the assertion error message |
| */ |
| public static AssertionError fail(String message) { |
| throw new AssertionError(message); |
| } |
| |
| public static void assertEqualsIgnoringOrder(Iterable<?> actual, Iterable<?> expected) { |
| assertEqualsIgnoringOrder(actual, expected, false, null); |
| } |
| |
| public static void assertEqualsIgnoringOrder(Iterable<?> actual, Iterable<?> expected, boolean logDuplicates, String errmsg) { |
| Set<?> actualSet = Sets.newLinkedHashSet(actual); |
| Set<?> expectedSet = Sets.newLinkedHashSet(expected); |
| Set<?> extras = Sets.difference(actualSet, expectedSet); |
| Set<?> missing = Sets.difference(expectedSet, actualSet); |
| List<Object> duplicates = Lists.newArrayList(actual); |
| for (Object a : actualSet) { |
| duplicates.remove(a); |
| } |
| String fullErrmsg = "extras="+extras+"; missing="+missing |
| + (logDuplicates ? "; duplicates="+MutableSet.copyOf(duplicates) : "") |
| +"; actualSize="+Iterables.size(actual)+"; expectedSize="+Iterables.size(expected) |
| +"; actual="+actual+"; expected="+expected+"; "+errmsg; |
| assertTrue(extras.isEmpty(), fullErrmsg); |
| assertTrue(missing.isEmpty(), fullErrmsg); |
| assertTrue(Iterables.size(actual) == Iterables.size(expected), fullErrmsg); |
| assertTrue(actualSet.equals(expectedSet), fullErrmsg); // should be covered by extras/missing/size test |
| } |
| |
| // --- new routines |
| |
| public static <T> void eventually(Supplier<? extends T> supplier, Predicate<T> predicate) { |
| eventually(ImmutableMap.<String,Object>of(), supplier, predicate); |
| } |
| |
| public static <T> void eventually(Map<String,?> flags, Supplier<? extends T> supplier, Predicate<T> predicate) { |
| eventually(flags, supplier, predicate, (String)null); |
| } |
| |
| public static <T> void eventually(Map<String,?> flags, Supplier<? extends T> supplier, Predicate<T> predicate, String errMsg) { |
| Duration timeout = toDuration(flags.get("timeout"), Duration.ONE_SECOND); |
| Duration period = toDuration(flags.get("period"), Duration.millis(10)); |
| long periodMs = period.toMilliseconds(); |
| long startTime = System.currentTimeMillis(); |
| long expireTime = startTime+timeout.toMilliseconds(); |
| |
| boolean first = true; |
| T supplied = supplier.get(); |
| while (first || System.currentTimeMillis() <= expireTime) { |
| supplied = supplier.get(); |
| if (predicate.apply(supplied)) { |
| return; |
| } |
| first = false; |
| if (periodMs > 0) sleep(periodMs); |
| } |
| fail("supplied="+supplied+"; predicate="+predicate+(errMsg!=null?"; "+errMsg:"")); |
| } |
| |
| // TODO improve here -- these methods aren't very useful without timeouts |
| public static <T> void continually(Supplier<? extends T> supplier, Predicate<T> predicate) { |
| continually(ImmutableMap.<String,Object>of(), supplier, predicate); |
| } |
| |
| public static <T> void continually(Map<String,?> flags, Supplier<? extends T> supplier, Predicate<? super T> predicate) { |
| continually(flags, supplier, predicate, (String)null); |
| } |
| |
| public static <T> void continually(Map<String,?> flags, Supplier<? extends T> supplier, Predicate<T> predicate, String errMsg) { |
| Duration duration = toDuration(flags.get("timeout"), Duration.ONE_SECOND); |
| Duration period = toDuration(flags.get("period"), Duration.millis(10)); |
| long periodMs = period.toMilliseconds(); |
| long startTime = System.currentTimeMillis(); |
| long expireTime = startTime+duration.toMilliseconds(); |
| |
| boolean first = true; |
| while (first || System.currentTimeMillis() <= expireTime) { |
| assertTrue(predicate.apply(supplier.get()), "supplied="+supplier.get()+"; predicate="+predicate+(errMsg!=null?"; "+errMsg:"")); |
| if (periodMs > 0) sleep(periodMs); |
| first = false; |
| } |
| } |
| |
| |
| /** |
| * @see #succeedsContinually(Map, Callable) |
| */ |
| public static void succeedsEventually(Runnable r) { |
| succeedsEventually(ImmutableMap.<String,Object>of(), r); |
| } |
| |
| /** |
| * @see #succeedsContinually(Map, Callable) |
| */ |
| public static void succeedsEventually(Map<String,?> flags, Runnable r) { |
| succeedsEventually(flags, toCallable(r)); |
| } |
| |
| /** |
| * @see #succeedsContinually(Map, Callable) |
| */ |
| public static <T> T succeedsEventually(Callable<T> c) { |
| return succeedsEventually(ImmutableMap.<String,Object>of(), c); |
| } |
| |
| // FIXME duplication with TestUtils.BooleanWithMessage |
| public static class BooleanWithMessage { |
| boolean value; String message; |
| public BooleanWithMessage(boolean value, String message) { |
| this.value = value; this.message = message; |
| } |
| public boolean asBoolean() { |
| return value; |
| } |
| public String toString() { |
| return message; |
| } |
| } |
| |
| /** |
| * Convenience method for cases where we need to test until something is true. |
| * |
| * The Callable will be invoked periodically until it succesfully concludes. |
| * <p> |
| * The following flags are supported: |
| * <ul> |
| * <li>abortOnError (boolean, default true) |
| * <li>abortOnException - (boolean, default false) |
| * <li>timeout - (a Duration or an integer in millis, defaults to {@link Asserts#DEFAULT_TIMEOUT}) |
| * <li>period - (a Duration or an integer in millis, for fixed retry time; if not set, defaults to exponentially increasing from 1 to 500ms) |
| * <li>minPeriod - (a Duration or an integer in millis; only used if period not explicitly set; the minimum period when exponentially increasing; defaults to 1ms) |
| * <li>maxPeriod - (a Duration or an integer in millis; only used if period not explicitly set; the maximum period when exponentially increasing; defaults to 500ms) |
| * <li>maxAttempts - (integer, Integer.MAX_VALUE) |
| * </ul> |
| * |
| * The following flags are deprecated: |
| * <ul> |
| * <li>useGroovyTruth - (defaults to false; any result code apart from 'false' will be treated as success including null; ignored for Runnables which aren't Callables) |
| * </ul> |
| * |
| * @param flags, accepts the flags listed above |
| * @param c The callable to invoke |
| */ |
| public static <T> T succeedsEventually(Map<String,?> flags, Callable<T> c) { |
| boolean abortOnException = get(flags, "abortOnException", false); |
| boolean abortOnError = get(flags, "abortOnError", false); |
| boolean useGroovyTruth = get(flags, "useGroovyTruth", false); |
| boolean logException = get(flags, "logException", true); |
| |
| // To speed up tests, default is for the period to start small and increase... |
| Duration duration = toDuration(flags.get("timeout"), DEFAULT_TIMEOUT); |
| Duration fixedPeriod = toDuration(flags.get("period"), null); |
| Duration minPeriod = (fixedPeriod != null) ? fixedPeriod : toDuration(flags.get("minPeriod"), Duration.millis(1)); |
| Duration maxPeriod = (fixedPeriod != null) ? fixedPeriod : toDuration(flags.get("maxPeriod"), Duration.millis(500)); |
| int maxAttempts = get(flags, "maxAttempts", Integer.MAX_VALUE); |
| int attempt = 0; |
| long startTime = System.currentTimeMillis(); |
| try { |
| Throwable lastException = null; |
| T result = null; |
| long lastAttemptTime = 0; |
| long expireTime = startTime+duration.toMilliseconds(); |
| long sleepTimeBetweenAttempts = minPeriod.toMilliseconds(); |
| |
| while (attempt < maxAttempts && lastAttemptTime < expireTime) { |
| try { |
| attempt++; |
| lastAttemptTime = System.currentTimeMillis(); |
| result = c.call(); |
| if (log.isTraceEnabled()) log.trace("Attempt {} after {} ms: {}", new Object[] {attempt, System.currentTimeMillis() - startTime, result}); |
| if (useGroovyTruth) { |
| if (groovyTruth(result)) return result; |
| } else if (Boolean.FALSE.equals(result)) { |
| if (result instanceof BooleanWithMessage) |
| log.warn("Test returned an instance of BooleanWithMessage but useGroovyTruth is not set! " + |
| "The result of this probably isn't what you intended."); |
| // FIXME surprising behaviour, "false" result here is acceptable |
| return result; |
| } else { |
| return result; |
| } |
| lastException = null; |
| } catch(Throwable e) { |
| lastException = e; |
| if (log.isTraceEnabled()) log.trace("Attempt {} after {} ms: {}", new Object[] {attempt, System.currentTimeMillis() - startTime, e.getMessage()}); |
| if (abortOnException) throw e; |
| if (abortOnError && e instanceof Error) throw e; |
| } |
| long sleepTime = Math.min(sleepTimeBetweenAttempts, expireTime-System.currentTimeMillis()); |
| if (sleepTime > 0) Thread.sleep(sleepTime); |
| sleepTimeBetweenAttempts = Math.min(sleepTimeBetweenAttempts*2, maxPeriod.toMilliseconds()); |
| } |
| |
| log.info("succeedsEventually exceeded max attempts or timeout - {} attempts lasting {} ms, for {}", new Object[] {attempt, System.currentTimeMillis()-startTime, c}); |
| if (lastException != null) |
| throw lastException; |
| throw fail("invalid result: "+result); |
| } catch (Throwable t) { |
| if (logException) log.info("failed succeeds-eventually, "+attempt+" attempts, "+ |
| (System.currentTimeMillis()-startTime)+"ms elapsed "+ |
| "(rethrowing): "+t); |
| throw propagate(t); |
| } |
| } |
| |
| public static <T> void succeedsContinually(Runnable r) { |
| succeedsContinually(ImmutableMap.<String,Object>of(), r); |
| } |
| |
| public static <T> void succeedsContinually(Map<?,?> flags, Runnable r) { |
| succeedsContinually(flags, toCallable(r)); |
| } |
| |
| public static <T> T succeedsContinually(Callable<T> c) { |
| return succeedsContinually(ImmutableMap.<String,Object>of(), c); |
| } |
| |
| public static <T> T succeedsContinually(Map<?,?> flags, Callable<T> job) { |
| Duration duration = toDuration(flags.get("timeout"), Duration.ONE_SECOND); |
| Duration period = toDuration(flags.get("period"), Duration.millis(10)); |
| long periodMs = period.toMilliseconds(); |
| long startTime = System.currentTimeMillis(); |
| long expireTime = startTime+duration.toMilliseconds(); |
| int attempt = 0; |
| |
| boolean first = true; |
| T result = null; |
| while (first || System.currentTimeMillis() <= expireTime) { |
| attempt++; |
| try { |
| result = job.call(); |
| } catch (Exception e) { |
| log.info("succeedsContinually failed - {} attempts lasting {} ms, for {} (rethrowing)", new Object[] {attempt, System.currentTimeMillis()-startTime, job}); |
| throw propagate(e); |
| } |
| if (periodMs > 0) sleep(periodMs); |
| first = false; |
| } |
| return result; |
| } |
| |
| private static Duration toDuration(Object duration, Duration defaultVal) { |
| if (duration == null) |
| return defaultVal; |
| else |
| return Duration.of(duration); |
| } |
| |
| public static void assertFails(Runnable r) { |
| assertFailsWith(toCallable(r), Predicates.alwaysTrue()); |
| } |
| |
| public static void assertFails(Callable<?> c) { |
| assertFailsWith(c, Predicates.alwaysTrue()); |
| } |
| |
| public static void assertFailsWith(Callable<?> c, final Closure<Boolean> exceptionChecker) { |
| assertFailsWith(c, new Predicate<Throwable>() { |
| public boolean apply(Throwable input) { |
| return exceptionChecker.call(input); |
| } |
| }); |
| } |
| |
| @SafeVarargs |
| public static void assertFailsWith(Runnable c, final Class<? extends Throwable> validException, final Class<? extends Throwable> ...otherValidExceptions) { |
| final List<Class<?>> validExceptions = ImmutableList.<Class<?>>builder() |
| .add(validException) |
| .addAll(ImmutableList.copyOf(otherValidExceptions)) |
| .build(); |
| |
| assertFailsWith(c, new Predicate<Throwable>() { |
| public boolean apply(Throwable e) { |
| for (Class<?> validException: validExceptions) { |
| if (validException.isInstance(e)) return true; |
| } |
| fail("Test threw exception of unexpected type "+e.getClass()+"; expecting "+validExceptions); |
| return false; |
| } |
| }); |
| } |
| |
| public static void assertFailsWith(Runnable r, Predicate<? super Throwable> exceptionChecker) { |
| assertFailsWith(toCallable(r), exceptionChecker); |
| } |
| |
| public static void assertFailsWith(Callable<?> c, Predicate<? super Throwable> exceptionChecker) { |
| boolean failed = false; |
| try { |
| c.call(); |
| } catch (Throwable e) { |
| failed = true; |
| if (!exceptionChecker.apply(e)) { |
| log.debug("Test threw invalid exception (failing)", e); |
| fail("Test threw invalid exception: "+e); |
| } |
| log.debug("Test for exception successful ("+e+")"); |
| } |
| if (!failed) fail("Test code should have thrown exception but did not"); |
| } |
| |
| public static void assertReturnsEventually(final Runnable r, Duration timeout) throws InterruptedException, ExecutionException, TimeoutException { |
| final AtomicReference<Throwable> throwable = new AtomicReference<Throwable>(); |
| Runnable wrappedR = new Runnable() { |
| @Override public void run() { |
| try { |
| r.run(); |
| } catch (Throwable t) { |
| throwable.set(t); |
| throw Exceptions.propagate(t); |
| } |
| } |
| }; |
| Thread thread = new Thread(wrappedR, "assertReturnsEventually("+r+")"); |
| try { |
| thread.start(); |
| thread.join(timeout.toMilliseconds()); |
| if (thread.isAlive()) { |
| throw new TimeoutException("Still running: r="+r+"; thread="+Arrays.toString(thread.getStackTrace())); |
| } |
| } catch (InterruptedException e) { |
| throw Exceptions.propagate(e); |
| } finally { |
| thread.interrupt(); |
| } |
| |
| if (throwable.get() != null) { |
| throw new ExecutionException(throwable.get()); |
| } |
| } |
| |
| public static <T> void assertThat(T object, Predicate<T> condition) { |
| if (condition.apply(object)) return; |
| fail("Failed "+condition+": "+object); |
| } |
| |
| public static void assertStringContains(String input, String phrase1ToContain, String ...optionalOtherPhrasesToContain) { |
| if (input==null) fail("Input is null."); |
| if (phrase1ToContain!=null) { |
| assertThat(input, StringPredicates.containsLiteral(phrase1ToContain)); |
| } |
| for (String otherPhrase: optionalOtherPhrasesToContain) { |
| if (otherPhrase!=null) { |
| assertThat(input, StringPredicates.containsLiteral(otherPhrase)); |
| } |
| } |
| } |
| |
| public static void assertStringContainsAtLeastOne(String input, String possiblePhrase1ToContain, String ...optionalOtherPossiblePhrasesToContain) { |
| if (input==null) fail("Input is null."); |
| List<String> missing = MutableList.of(); |
| if (possiblePhrase1ToContain!=null) { |
| if (input.contains(possiblePhrase1ToContain)) return; |
| missing.add(possiblePhrase1ToContain); |
| } |
| for (String otherPhrase: optionalOtherPossiblePhrasesToContain) { |
| if (otherPhrase!=null) { |
| if (input.contains(otherPhrase)) return; |
| missing.add(otherPhrase); |
| } |
| } |
| fail("Input did not contain any of the expected phrases "+missing+": "+input); |
| } |
| |
| public static void assertStringContainsIgnoreCase(String input, String phrase1ToContain, String ...optionalOtherPhrasesToContain) { |
| if (input==null) fail("Input is null."); |
| if (phrase1ToContain!=null) { |
| assertThat(input, StringPredicates.containsLiteralIgnoreCase(phrase1ToContain)); |
| } |
| for (String otherPhrase: optionalOtherPhrasesToContain) { |
| if (otherPhrase!=null) { |
| assertThat(input, StringPredicates.containsLiteralIgnoreCase(otherPhrase)); |
| } |
| } |
| } |
| |
| public static void assertStringMatchesRegex(String input, String regex1ToMatch, String ...optionalOtherRegexesToMatch) { |
| if (input==null) fail("Input is null."); |
| if (regex1ToMatch!=null) { |
| assertThat(input, StringPredicates.matchesRegex(regex1ToMatch)); |
| } |
| for (String otherRegex: optionalOtherRegexesToMatch) { |
| if (otherRegex!=null) { |
| assertThat(input, StringPredicates.matchesRegex(otherRegex)); |
| } |
| } |
| } |
| |
| /** Subclass of {@link AssertionError} which indicates that code which should have thrown did not, |
| * so that callers can disambiguate expected errors from this one. |
| * See {@link #shouldHaveFailedPreviously()} */ |
| public static class ShouldHaveFailedPreviouslyAssertionError extends AssertionError { |
| private static final long serialVersionUID = 4359541529633617518L; |
| public ShouldHaveFailedPreviouslyAssertionError() { this("Should have failed previously."); } |
| public ShouldHaveFailedPreviouslyAssertionError(String message) { super(message); } |
| } |
| |
| /** Throws a {@link ShouldHaveFailedPreviouslyAssertionError} exception, |
| * to more easily distinguish this failure from other fails. |
| * In particular, use one of the <code>expectedFailure</code> methods |
| * in the surrounding <code>catch</code> block and this error will pass through it. */ |
| public static void shouldHaveFailedPreviously() { |
| throw new ShouldHaveFailedPreviouslyAssertionError(); |
| } |
| /** As {@link #shouldHaveFailedPreviously()} but allowing detail, |
| * for example a value which was received when it shouldn't have been. */ |
| public static void shouldHaveFailedPreviously(String message) { |
| throw new ShouldHaveFailedPreviouslyAssertionError(message); |
| } |
| |
| /** Tests that an exception is not {@link ShouldHaveFailedPreviouslyAssertionError}. |
| * See {@link #shouldHaveFailedPreviously()} */ |
| public static void expectedFailure(Throwable e) { |
| if (e instanceof ShouldHaveFailedPreviouslyAssertionError) throw (Error)e; |
| } |
| |
| /** Tests that an exception is not {@link ShouldHaveFailedPreviouslyAssertionError} |
| * and is one of the given types. |
| * |
| * @return If the test is satisfied, this method returns normally. |
| * The caller can decide whether anything more should be done with the exception. |
| * If the test fails, then either it is propagated, |
| * if the {@link Throwable} is a fatal ({@link Exceptions#propagateIfFatal(Throwable)}) other than an {@link AssertionError}, |
| * or more usually the test failure of this method is thrown, |
| * with detail of the original {@link Throwable} logged. */ |
| public static void expectedFailureOfType(Throwable e, Class<?> ...permittedSupertypes) { |
| if (e instanceof ShouldHaveFailedPreviouslyAssertionError) throw (Error)e; |
| for (Class<?> t: permittedSupertypes) { |
| if (t.isInstance(e)) return; |
| } |
| rethrowPreferredException(e, |
| new AssertionError("Error "+JavaClassNames.simpleClassName(e)+" is not any of the expected types: " + Arrays.asList(permittedSupertypes))); |
| } |
| |
| /** Tests {@link #expectedFailure(Throwable)} and that the <code>toString</code> |
| * satisfies {@link #assertStringContains(String, String, String...)}. |
| * @return as per {@link #expectedFailureOfType(Throwable, Class...)} */ |
| public static void expectedFailureContains(Throwable e, String phrase1ToContain, String ...optionalOtherPhrasesToContain) { |
| if (e instanceof ShouldHaveFailedPreviouslyAssertionError) throw (Error)e; |
| try { |
| assertStringContains(e.toString(), phrase1ToContain, optionalOtherPhrasesToContain); |
| } catch (AssertionError ee) { |
| rethrowPreferredException(e, ee); |
| } |
| } |
| |
| /** As {@link #expectedFailureContains(Throwable, String, String...)} but case insensitive */ |
| public static void expectedFailureContainsIgnoreCase(Throwable e, String phrase1ToContain, String ...optionalOtherPhrasesToContain) { |
| if (e instanceof ShouldHaveFailedPreviouslyAssertionError) throw (Error)e; |
| try { |
| assertStringContainsIgnoreCase(e.toString(), phrase1ToContain, optionalOtherPhrasesToContain); |
| } catch (AssertionError ee) { |
| rethrowPreferredException(e, ee); |
| } |
| } |
| |
| /** Implements the return beahvior for {@link #expectedFailureOfType(Throwable, Class...)} and others. */ |
| private static void rethrowPreferredException(Throwable earlierPreferredIfFatalElseLogged, Throwable laterPreferredOtherwise) throws AssertionError { |
| if (!(earlierPreferredIfFatalElseLogged instanceof AssertionError)) { |
| Exceptions.propagateIfFatal(earlierPreferredIfFatalElseLogged); |
| } |
| log.warn("Detail of unexpected error: "+earlierPreferredIfFatalElseLogged, earlierPreferredIfFatalElseLogged); |
| throw Exceptions.propagate(laterPreferredOtherwise); |
| } |
| |
| @SuppressWarnings("rawtypes") |
| private static boolean groovyTruth(Object o) { |
| // TODO Doesn't handle matchers (see http://docs.codehaus.org/display/GROOVY/Groovy+Truth) |
| if (o == null) { |
| return false; |
| } else if (o instanceof Boolean) { |
| return (Boolean)o; |
| } else if (o instanceof String) { |
| return !((String)o).isEmpty(); |
| } else if (o instanceof Collection) { |
| return !((Collection)o).isEmpty(); |
| } else if (o instanceof Map) { |
| return !((Map)o).isEmpty(); |
| } else if (o instanceof Iterator) { |
| return ((Iterator)o).hasNext(); |
| } else if (o instanceof Enumeration) { |
| return ((Enumeration)o).hasMoreElements(); |
| } else { |
| return true; |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| private static <T> T get(Map<String,?> map, String key, T defaultVal) { |
| Object val = map.get(key); |
| return (T) ((val == null) ? defaultVal : val); |
| } |
| |
| private static Callable<?> toCallable(Runnable r) { |
| return (r instanceof Callable) ? (Callable<?>)r : new RunnableAdapter<Void>(r, null); |
| } |
| |
| /** Same as {@link java.util.concurrent.Executors#callable(Runnable)}, except includes toString() */ |
| static final class RunnableAdapter<T> implements Callable<T> { |
| final Runnable task; |
| final T result; |
| RunnableAdapter(Runnable task, T result) { |
| this.task = task; |
| this.result = result; |
| } |
| public T call() { |
| task.run(); |
| return result; |
| } |
| @Override |
| public String toString() { |
| return "RunnableAdapter("+task+")"; |
| } |
| } |
| |
| private static void sleep(long periodMs) { |
| if (periodMs > 0) { |
| try { |
| Thread.sleep(periodMs); |
| } catch (InterruptedException e) { |
| throw propagate(e); |
| } |
| } |
| } |
| |
| private static RuntimeException propagate(Throwable t) { |
| if (t instanceof InterruptedException) { |
| Thread.currentThread().interrupt(); |
| } |
| if (t instanceof RuntimeException) throw (RuntimeException)t; |
| if (t instanceof Error) throw (Error)t; |
| throw new RuntimeException(t); |
| } |
| |
| } |