test/com/facebook/buck/junit/ClassStatementsTest.java

/*
 * Copyright 2014-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.junit;

import static com.facebook.buck.testutil.OutputHelper.createBuckTestOutputLineRegex;
import static com.facebook.buck.testutil.RegexMatcher.containsRegex;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.greaterThan;
import static org.junit.Assert.assertThat;

import com.facebook.buck.testutil.integration.DebuggableTemporaryFolder;
import com.facebook.buck.testutil.integration.ProjectWorkspace;
import com.facebook.buck.testutil.integration.TestDataHelper;

import org.junit.Rule;
import org.junit.Test;

import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ClassStatementsTest {

  public static final int BEFORE_CLASS_EXPECTED_RUNTIME = 250;

  @Rule
  public DebuggableTemporaryFolder temporaryFolder = new DebuggableTemporaryFolder();

  @Test
  public void shouldFailWhenBeforeClassThrows() throws IOException {
    ProjectWorkspace workspace = TestDataHelper.createProjectWorkspaceForScenario(
        this, "class_statements", temporaryFolder);
    workspace.setUp();

    ProjectWorkspace.ProcessResult result = workspace.runBuckCommand("test", "--all");
    result.assertTestFailure("Tests should fail");

    String stderr = result.getStderr();
    assertThat("Explanatory exception output is present", stderr, containsString("BOOM!"));

    assertThat("Some tests still pass", stderr, containsRegex(createBuckTestOutputLineRegex(
        "PASS", 3, 0, 0, "com.example.EverythingOKTest")));

    assertThat(stderr, containsRegex(createBuckTestOutputLineRegex(
        "FAIL", 0, 0, 1, "com.example.HasBeforeClassFailure")));

    Pattern failPattern = Pattern.compile("^FAIL +(\\d+)ms", Pattern.MULTILINE);
    Matcher matcher = failPattern.matcher(stderr);
    matcher.find();
    int actualRuntime = Integer.parseInt(matcher.group(1));
    assertThat("Reasonable runtime was guessed",
        actualRuntime,
        greaterThan(BEFORE_CLASS_EXPECTED_RUNTIME));
  }

}