| /* |
| * 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 |
| * |
| * https://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.avro; |
| |
| import org.junit.Test; |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| import org.apache.avro.generic.GenericArray; |
| import org.apache.avro.generic.GenericData; |
| import org.apache.avro.generic.GenericDatumWriter; |
| import org.apache.avro.specific.SpecificData; |
| import org.apache.avro.specific.SpecificDatumWriter; |
| import org.apache.avro.io.BinaryData; |
| import org.apache.avro.io.DatumWriter; |
| import org.apache.avro.io.Encoder; |
| import org.apache.avro.io.EncoderFactory; |
| import org.apache.avro.util.Utf8; |
| |
| import org.apache.avro.test.TestRecord; |
| import org.apache.avro.test.Kind; |
| import org.apache.avro.test.MD5; |
| |
| public class TestCompare { |
| |
| @Test |
| public void testNull() throws Exception { |
| Schema schema = new Schema.Parser().parse("\"null\""); |
| byte[] b = render(null, schema, new GenericDatumWriter<>()); |
| assertEquals(0, BinaryData.compare(b, 0, b, 0, schema)); |
| } |
| |
| @Test |
| public void testBoolean() throws Exception { |
| check("\"boolean\"", Boolean.FALSE, Boolean.TRUE); |
| } |
| |
| @Test |
| public void testString() throws Exception { |
| check("\"string\"", new Utf8(""), new Utf8("a")); |
| check("\"string\"", new Utf8("a"), new Utf8("b")); |
| check("\"string\"", new Utf8("a"), new Utf8("ab")); |
| check("\"string\"", new Utf8("ab"), new Utf8("b")); |
| } |
| |
| @Test |
| public void testBytes() throws Exception { |
| check("\"bytes\"", ByteBuffer.wrap(new byte[] {}), ByteBuffer.wrap(new byte[] { 1 })); |
| check("\"bytes\"", ByteBuffer.wrap(new byte[] { 1 }), ByteBuffer.wrap(new byte[] { 2 })); |
| check("\"bytes\"", ByteBuffer.wrap(new byte[] { 1, 2 }), ByteBuffer.wrap(new byte[] { 2 })); |
| } |
| |
| @Test |
| public void testInt() throws Exception { |
| check("\"int\"", -1, 0); |
| check("\"int\"", 0, 1); |
| } |
| |
| @Test |
| public void testLong() throws Exception { |
| check("\"long\"", 11L, 12L); |
| check("\"long\"", (long) -1, 1L); |
| } |
| |
| @Test |
| public void testFloat() throws Exception { |
| check("\"float\"", 1.1f, 1.2f); |
| check("\"float\"", (float) -1.1, 1.0f); |
| } |
| |
| @Test |
| public void testDouble() throws Exception { |
| check("\"double\"", 1.2, 1.3); |
| check("\"double\"", -1.2, 1.3); |
| } |
| |
| @Test |
| public void testArray() throws Exception { |
| String json = "{\"type\":\"array\", \"items\": \"long\"}"; |
| Schema schema = new Schema.Parser().parse(json); |
| GenericArray<Long> a1 = new GenericData.Array<>(1, schema); |
| a1.add(1L); |
| GenericArray<Long> a2 = new GenericData.Array<>(1, schema); |
| a2.add(1L); |
| a2.add(0L); |
| check(json, a1, a2); |
| } |
| |
| @Test |
| public void testRecord() throws Exception { |
| String fields = " \"fields\":[" + "{\"name\":\"f\",\"type\":\"int\",\"order\":\"ignore\"}," |
| + "{\"name\":\"g\",\"type\":\"int\",\"order\":\"descending\"}," + "{\"name\":\"h\",\"type\":\"int\"}]}"; |
| String recordJson = "{\"type\":\"record\", \"name\":\"Test\"," + fields; |
| Schema schema = new Schema.Parser().parse(recordJson); |
| GenericData.Record r1 = new GenericData.Record(schema); |
| r1.put("f", 1); |
| r1.put("g", 13); |
| r1.put("h", 41); |
| GenericData.Record r2 = new GenericData.Record(schema); |
| r2.put("f", 0); |
| r2.put("g", 12); |
| r2.put("h", 41); |
| check(recordJson, r1, r2); |
| r2.put("f", 0); |
| r2.put("g", 13); |
| r2.put("h", 42); |
| check(recordJson, r1, r2); |
| |
| String record2Json = "{\"type\":\"record\", \"name\":\"Test2\"," + fields; |
| Schema schema2 = new Schema.Parser().parse(record2Json); |
| GenericData.Record r3 = new GenericData.Record(schema2); |
| r3.put("f", 1); |
| r3.put("g", 13); |
| r3.put("h", 41); |
| assert (!r1.equals(r3)); // same fields, diff name |
| } |
| |
| @Test |
| public void testEnum() throws Exception { |
| String json = "{\"type\":\"enum\", \"name\":\"Test\",\"symbols\": [\"A\", \"B\"]}"; |
| Schema schema = new Schema.Parser().parse(json); |
| check(json, new GenericData.EnumSymbol(schema, "A"), new GenericData.EnumSymbol(schema, "B")); |
| } |
| |
| @Test |
| public void testFixed() throws Exception { |
| String json = "{\"type\": \"fixed\", \"name\":\"Test\", \"size\": 1}"; |
| Schema schema = new Schema.Parser().parse(json); |
| check(json, new GenericData.Fixed(schema, new byte[] { (byte) 'a' }), |
| new GenericData.Fixed(schema, new byte[] { (byte) 'b' })); |
| } |
| |
| @Test |
| public void testUnion() throws Exception { |
| check("[\"string\", \"long\"]", new Utf8("a"), new Utf8("b"), false); |
| check("[\"string\", \"long\"]", 1L, 2L, false); |
| check("[\"string\", \"long\"]", new Utf8("a"), 1L, false); |
| } |
| |
| @Test |
| public void testSpecificRecord() throws Exception { |
| TestRecord s1 = new TestRecord(); |
| TestRecord s2 = new TestRecord(); |
| s1.setName("foo"); |
| s1.setKind(Kind.BAZ); |
| s1.setHash(new MD5(new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5 })); |
| s2.setName("bar"); |
| s2.setKind(Kind.BAR); |
| s2.setHash(new MD5(new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 6 })); |
| Schema schema = SpecificData.get().getSchema(TestRecord.class); |
| |
| check(schema, s1, s2, true, new SpecificDatumWriter<>(schema), SpecificData.get()); |
| s2.setKind(Kind.BAZ); |
| check(schema, s1, s2, true, new SpecificDatumWriter<>(schema), SpecificData.get()); |
| } |
| |
| private static <T> void check(String schemaJson, T o1, T o2) throws Exception { |
| check(schemaJson, o1, o2, true); |
| } |
| |
| private static <T> void check(String schemaJson, T o1, T o2, boolean comparable) throws Exception { |
| check(new Schema.Parser().parse(schemaJson), o1, o2, comparable, new GenericDatumWriter<>(), GenericData.get()); |
| } |
| |
| private static <T> void check(Schema schema, T o1, T o2, boolean comparable, DatumWriter<T> writer, |
| GenericData comparator) throws Exception { |
| |
| byte[] b1 = render(o1, schema, writer); |
| byte[] b2 = render(o2, schema, writer); |
| assertEquals(-1, BinaryData.compare(b1, 0, b2, 0, schema)); |
| assertEquals(1, BinaryData.compare(b2, 0, b1, 0, schema)); |
| assertEquals(0, BinaryData.compare(b1, 0, b1, 0, schema)); |
| assertEquals(0, BinaryData.compare(b2, 0, b2, 0, schema)); |
| |
| assertEquals(-1, compare(o1, o2, schema, comparable, comparator)); |
| assertEquals(1, compare(o2, o1, schema, comparable, comparator)); |
| assertEquals(0, compare(o1, o1, schema, comparable, comparator)); |
| assertEquals(0, compare(o2, o2, schema, comparable, comparator)); |
| |
| assert (o1.equals(o1)); |
| assert (o2.equals(o2)); |
| assert (!o1.equals(o2)); |
| assert (!o2.equals(o1)); |
| assert (!o1.equals(new Object())); |
| assert (!o2.equals(new Object())); |
| assert (!o1.equals(null)); |
| assert (!o2.equals(null)); |
| |
| assert (o1.hashCode() != o2.hashCode()); |
| |
| // check BinaryData.hashCode against Object.hashCode |
| if (schema.getType() != Schema.Type.ENUM) { |
| assertEquals(o1.hashCode(), BinaryData.hashCode(b1, 0, b1.length, schema)); |
| assertEquals(o2.hashCode(), BinaryData.hashCode(b2, 0, b2.length, schema)); |
| } |
| |
| // check BinaryData.hashCode against GenericData.hashCode |
| assertEquals(comparator.hashCode(o1, schema), BinaryData.hashCode(b1, 0, b1.length, schema)); |
| assertEquals(comparator.hashCode(o2, schema), BinaryData.hashCode(b2, 0, b2.length, schema)); |
| |
| } |
| |
| @SuppressWarnings(value = "unchecked") |
| private static int compare(Object o1, Object o2, Schema schema, boolean comparable, GenericData comparator) { |
| return comparable ? ((Comparable<Object>) o1).compareTo(o2) : comparator.compare(o1, o2, schema); |
| } |
| |
| private static <T> byte[] render(T datum, Schema schema, DatumWriter<T> writer) throws IOException { |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| writer.setSchema(schema); |
| Encoder enc = new EncoderFactory().directBinaryEncoder(out, null); |
| writer.write(datum, enc); |
| enc.flush(); |
| return out.toByteArray(); |
| } |
| } |