// Copyright 2017 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.shell;

import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth8.assertThat;
import static org.junit.Assert.assertThrows;

import java.time.Duration;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Unit tests for {@link CommandResult}. */
@RunWith(JUnit4.class)
public final class CommandResultTest {

  @Test
  public void testBuilder_WithNoStderr() {
    Exception e =
        assertThrows(
            IllegalStateException.class,
            () ->
                CommandResult.builder()
                    .setStdoutStream(CommandResult.EMPTY_OUTPUT)
                    .setTerminationStatus(new TerminationStatus(0, false))
                    .build());
    assertThat(e).hasMessageThat().contains("stderrStream");
  }

  @Test
  public void testBuilder_WithNoStdout() {
    Exception e =
        assertThrows(
            IllegalStateException.class,
            () ->
                CommandResult.builder()
                    .setStderrStream(CommandResult.EMPTY_OUTPUT)
                    .setTerminationStatus(new TerminationStatus(0, false))
                    .build());
    assertThat(e).hasMessageThat().contains("stdoutStream");
  }

  @Test
  public void testBuilder_WithNoTerminationStatus() {
    Exception e =
        assertThrows(
            IllegalStateException.class,
            () ->
                CommandResult.builder()
                    .setStdoutStream(CommandResult.EMPTY_OUTPUT)
                    .setStderrStream(CommandResult.EMPTY_OUTPUT)
                    .build());
    assertThat(e).hasMessageThat().contains("terminationStatus");
  }

  @Test
  public void testBuilder_WithNoExecutionTime() {
    CommandResult commandResult =
        CommandResult.builder()
            .setStdoutStream(CommandResult.EMPTY_OUTPUT)
            .setStderrStream(CommandResult.EMPTY_OUTPUT)
            .setTerminationStatus(new TerminationStatus(0, false))
            .build();
    assertThat(commandResult.getWallExecutionTime()).isEmpty();
    assertThat(commandResult.getUserExecutionTime()).isEmpty();
    assertThat(commandResult.getSystemExecutionTime()).isEmpty();
  }

  @Test
  public void testBuilder_WithExecutionTime() {
    CommandResult commandResult =
        CommandResult.builder()
            .setStdoutStream(CommandResult.EMPTY_OUTPUT)
            .setStderrStream(CommandResult.EMPTY_OUTPUT)
            .setTerminationStatus(new TerminationStatus(0, false))
            .setWallExecutionTime(Duration.ofMillis(1929))
            .setUserExecutionTime(Duration.ofMillis(1492))
            .setSystemExecutionTime(Duration.ofMillis(1787))
            .build();
    assertThat(commandResult.getWallExecutionTime()).hasValue(Duration.ofMillis(1929));
    assertThat(commandResult.getUserExecutionTime()).hasValue(Duration.ofMillis(1492));
    assertThat(commandResult.getSystemExecutionTime()).hasValue(Duration.ofMillis(1787));
  }
}