com.facebook.buck.testutil.endtoend.BuckInvoker.java Source code

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Here is the source code for com.facebook.buck.testutil.endtoend.BuckInvoker.java

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/*
 * Copyright 2018-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.testutil.endtoend;

import com.facebook.buck.core.exceptions.HumanReadableException;
import com.facebook.buck.io.ExecutableFinder;
import com.google.common.collect.ImmutableMap;
import java.nio.file.Paths;
import org.junit.Assume;
import org.junit.runners.model.Statement;

/**
 * A statement that takes a testDescriptor and target, performs needed setup including the
 * construction and destruction of the necessary Workspace.
 */
public class BuckInvoker extends Statement {
    private final EndToEndTestDescriptor testDescriptor;
    private final Object target;
    private final ExecutableFinder executableFinder = new ExecutableFinder();

    private void assumeWatchman() {
        try {
            executableFinder.getExecutable(Paths.get("watchman"),
                    ImmutableMap.copyOf(testDescriptor.getVariableMap()));
        } catch (HumanReadableException e) {
            Assume.assumeNoException("watchman not found, skipping buckd test", e);
        }
    }

    public BuckInvoker(EndToEndTestDescriptor testDescriptor, Object target) {
        this.testDescriptor = testDescriptor;
        this.target = target;
    }

    @Override
    public void evaluate() throws Throwable {
        if (testDescriptor.getBuckdEnabled()) {
            assumeWatchman();
        }
        EndToEndWorkspace workspace = new EndToEndWorkspace();
        workspace.setup();
        workspace.attachTestSpecificFixtureSuffixes(testDescriptor.getMethod().getDeclaringClass().getSimpleName(),
                testDescriptor.getMethod().getName());
        workspace.addBuckConfigLocalOptions(testDescriptor.getLocalConfigs());
        try {
            testDescriptor.getMethod().invokeExplosively(target, testDescriptor, workspace);
        } finally {
            workspace.teardown();
        }
    }
}