| /* |
| * Copyright 2013-present Facebook, Inc. |
| * |
| * Licensed 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 com.facebook.buck.step; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import com.facebook.buck.util.TriState; |
| import com.google.common.base.Supplier; |
| |
| import org.easymock.EasyMockSupport; |
| import org.junit.Test; |
| |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import java.io.IOException; |
| |
| public class ConditionalStepTest extends EasyMockSupport { |
| |
| @Test |
| public void testExecuteConditionalStepWhenTrue() throws IOException, InterruptedException { |
| // Create a Supplier<Boolean> that returns a value once an external condition has been |
| // satisfied. |
| final AtomicReference<TriState> condition = new AtomicReference<>( |
| TriState.UNSPECIFIED); |
| Supplier<Boolean> conditional = new Supplier<Boolean>() { |
| @Override |
| public Boolean get() { |
| if (!condition.get().isSet()) { |
| throw new IllegalStateException("condition must be satisfied before this is queried."); |
| } else { |
| return condition.get().asBoolean(); |
| } |
| } |
| }; |
| |
| // Create a step to run when the Supplier<Boolean> is true. Exit code is always 37. |
| final AtomicInteger numCalls = new AtomicInteger(0); |
| Step stepToRunWhenSupplierIsTrue = new AbstractExecutionStep("inc") { |
| @Override |
| public int execute(ExecutionContext context) { |
| numCalls.incrementAndGet(); |
| return 37; |
| } |
| }; |
| |
| // Create and execute the ConditionalStep. |
| ConditionalStep conditionalStep = new ConditionalStep(conditional, stepToRunWhenSupplierIsTrue); |
| condition.set(TriState.TRUE); |
| ExecutionContext context = TestExecutionContext.newInstance(); |
| int exitCode = conditionalStep.execute(context); |
| assertEquals("stepToRunWhenSupplierIsTrue should have been run once.", 1, numCalls.get()); |
| assertEquals("The exit code of stepToRunWhenSupplierIsTrue should be passed through.", |
| 37, |
| exitCode); |
| assertEquals("inc", conditionalStep.getShortName()); |
| assertEquals("conditionally: inc", conditionalStep.getDescription(context)); |
| } |
| |
| @Test |
| public void testExecuteConditionalStepWhenFalse() throws IOException, InterruptedException { |
| // Create a Supplier<Boolean> that returns a value once an external condition has been |
| // satisfied. |
| final AtomicReference<TriState> condition = new AtomicReference<>( |
| TriState.UNSPECIFIED); |
| Supplier<Boolean> conditional = new Supplier<Boolean>() { |
| @Override |
| public Boolean get() { |
| if (!condition.get().isSet()) { |
| throw new IllegalStateException("condition must be satisfied before this is queried."); |
| } else { |
| return condition.get().asBoolean(); |
| } |
| } |
| }; |
| |
| // Create a step to run when the Supplier<Boolean> is true. Because the Supplier<Boolean> will |
| // be false, this step should not be run. |
| final AtomicInteger numCalls = new AtomicInteger(0); |
| Step stepToRunWhenSupplierIsTrue = new AbstractExecutionStep("inc") { |
| @Override |
| public int execute(ExecutionContext context) { |
| numCalls.incrementAndGet(); |
| throw new IllegalStateException("This step should not be executed."); |
| } |
| }; |
| |
| // Create and execute the ConditionalStep. |
| ConditionalStep conditionalStep = new ConditionalStep(conditional, stepToRunWhenSupplierIsTrue); |
| condition.set(TriState.FALSE); |
| ExecutionContext context = TestExecutionContext.newInstance(); |
| int exitCode = conditionalStep.execute(context); |
| assertEquals("stepToRunWhenSupplierIsTrue should not have been run.", 0, numCalls.get()); |
| assertEquals("The exit code should be zero when the conditional is false.", 0, exitCode); |
| assertEquals("inc", conditionalStep.getShortName()); |
| assertEquals("conditionally: inc", conditionalStep.getDescription(context)); |
| } |
| } |