src/test/java/com/google/devtools/build/lib/buildtool/NoOutputActionTest.java

// Copyright 2020 The Bazel Authors. All rights reserved.
//
// 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.google.devtools.build.lib.buildtool;

import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertThrows;

import com.google.devtools.build.lib.actions.BuildFailedException;
import com.google.devtools.build.lib.buildtool.util.BuildIntegrationTestCase;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Regression test for bug #649512: an action that doesn't generate the
 * outputs it's supposed to should cause an error to be reported, but not a
 * crash.
 */
@RunWith(JUnit4.class)
public class NoOutputActionTest extends BuildIntegrationTestCase {

  @Test
  public void testNoOutput() throws Exception {
    write(
        "nooutput/BUILD",
        """
        genrule(
            name = "nooutput",
            outs = [
                "out1",
                "out2",
            ],
            cmd = "",
        )
        """);

    BuildFailedException e =
        assertThrows(BuildFailedException.class, () -> buildTarget("//nooutput"));
    assertThat(e)
        .hasMessageThat()
        .contains(
            "nooutput/BUILD:1:8 Executing genrule //nooutput:nooutput failed: not all outputs were"
                + " created or valid");
    events.assertContainsError("declared output 'nooutput/out1' was not created by genrule");
    events.assertContainsError("declared output 'nooutput/out2' was not created by genrule");
  }

}