src/test/java/com/google/devtools/build/lib/util/ResourceFileLoaderTest.java

// Copyright 2014 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.util;

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

import java.io.IOException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * A test for {@link ResourceFileLoader}.
 */
@RunWith(JUnit4.class)
public class ResourceFileLoaderTest {

  @Test
  public void loader() throws IOException {
    String message = ResourceFileLoader.loadResource(
        ResourceFileLoaderTest.class, "ResourceFileLoaderTest.message");
    assertThat(message).isEqualTo("Hello, world.");
  }

  @Test
  public void resourceNotFound() {
    IOException e =
        assertThrows(
            IOException.class,
            () ->
                ResourceFileLoader.loadResource(
                    ResourceFileLoaderTest.class, "does_not_exist.txt"));
    assertThat(e).hasMessageThat().isEqualTo("does_not_exist.txt not found.");
  }

}