| /* |
| * 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.drill.exec.physical.impl; |
| |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertSame; |
| |
| import org.apache.drill.test.BaseTest; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.junit.Test; |
| |
| /** |
| * Test the function which finds the leaf-most operator within |
| * an exception call stack. Does the tests using dummy classes |
| * (which is why the stack analyzer function is parameterized.) |
| */ |
| public class TestStackAnalyzer extends BaseTest{ |
| |
| private static class OperA { |
| public void throwNow() { |
| throw new RuntimeException(); |
| } |
| |
| public void throwIndirect() { |
| throwNow(); |
| } |
| |
| public void throwViaB(OperB b) { |
| b.throwIndirect(); |
| } |
| |
| public void throwAfterB(OperB b) { |
| new RandomC().throwAfterB(b); |
| } |
| } |
| |
| private static class OperB { |
| public void throwNow() { |
| throw new RuntimeException(); |
| } |
| |
| public void throwIndirect() { |
| throwNow(); |
| } |
| |
| public void throwAfterB() { |
| new RandomC().throwNow(); |
| } |
| } |
| |
| private static class RandomC { |
| public void throwNow() { |
| throw new RuntimeException(); |
| } |
| |
| public void throwAfterB(OperB b) { |
| b.throwAfterB(); |
| } |
| } |
| |
| @Test |
| public void testEmptyStack() { |
| try { |
| throw new RuntimeException(); |
| } catch (RuntimeException e) { |
| assertNull(BaseRootExec.findLeaf(Collections.emptyList(), e)); |
| } |
| } |
| |
| @Test |
| public void testOneLevel() { |
| OperA a = new OperA(); |
| try { |
| a.throwNow(); |
| } catch (RuntimeException e) { |
| List<Object> ops = Collections.singletonList(a); |
| assertSame(a, BaseRootExec.findLeaf(ops, e)); |
| } |
| } |
| |
| @Test |
| public void testOneLevelTwoDeep() { |
| OperA a = new OperA(); |
| try { |
| a.throwIndirect(); |
| } catch (RuntimeException e) { |
| List<Object> ops = Collections.singletonList(a); |
| assertSame(a, BaseRootExec.findLeaf(ops, e)); |
| } |
| } |
| |
| @Test |
| public void testTwoLevels() { |
| OperA a = new OperA(); |
| OperB b = new OperB(); |
| try { |
| a.throwViaB(b); |
| } catch (RuntimeException e) { |
| List<Object> ops = Arrays.asList(a, b); |
| assertSame(b, BaseRootExec.findLeaf(ops, e)); |
| } |
| } |
| |
| @Test |
| public void testTwoLevelsWithExtra() { |
| OperA a = new OperA(); |
| OperB b = new OperB(); |
| try { |
| a.throwAfterB(b); |
| } catch (RuntimeException e) { |
| List<Object> ops = Arrays.asList(a, b); |
| assertSame(b, BaseRootExec.findLeaf(ops, e)); |
| } |
| } |
| } |