ClassNameTest.java

/*
 * Copyright 2015 Google Inc. 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.errorprone.bugpatterns;

import com.google.errorprone.CompilationTestHelper;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** {@link ClassName}Test */
@RunWith(JUnit4.class)
public class ClassNameTest {

  private CompilationTestHelper compilationHelper;

  @Before
  public void setUp() {
    compilationHelper = CompilationTestHelper.newInstance(ClassName.class, getClass());
  }

  @Test
  public void twoClasses() throws Exception {
    compilationHelper
        .addSourceLines(
            "a/A.java",
            "// BUG: Diagnostic contains: A inside A.java, instead found: One, Two",
            "package a;",
            "class One {}",
            "class Two {}")
        .doTest();
  }

  @Test
  public void packageInfo() throws Exception {
      compilationHelper
          .addSourceLines(
              "a/package-info.java",
              "/** Documentation for our package */",
              "package a;")
          .addSourceLines(
              "b/Test.java",
              "// BUG: Diagnostic contains: Test inside Test.java, instead found: Green",
              "package b;",
              "class Green {}")
          .doTest();
  }

  @Test
  public void negative() throws Exception {
      compilationHelper
          .addSourceLines(
              "a/A.java",
              "package a;",
              "class A {}")
          .addSourceLines(
              "b/B.java",
              "package b;",
              "class B {}")
          .doTest();
  }

  @Test
  public void negativeMultipleTopLevel() throws Exception {
      compilationHelper
          .addSourceLines(
              "a/A.java",
              "package a;",
              "class A {}")
          .addSourceLines(
              "b/B.java",
              "package b;",
              "class B {}",
              "class C {}")
          .doTest();
  }

  @Test
  public void negativeInnerClass() throws Exception {
      compilationHelper
          .addSourceLines(
              "b/B.java",
              "package b;",
              "class B {",
              "  static class Inner {}",
              "}")
          .doTest();
  }

  @Test
  public void negativeInterface() throws Exception {
      compilationHelper
          .addSourceLines(
              "b/B.java",
              "package b;",
              "interface B {",
              "  static class Inner {}",
              "}")
          .doTest();
  }

  @Test
  public void negativeEnum() throws Exception {
      compilationHelper
          .addSourceLines(
              "b/B.java",
              "package b;",
              "enum B {",
              "  ONE;",
              "}")
          .doTest();
 }

  @Test
  public void negativeAnnotation() throws Exception {
      compilationHelper
          .addSourceLines(
              "b/B.java",
              "package b;",
              "public @interface B {",
              "}")
          .doTest();
  }

  @Test
  public void negativeIsPublic() throws Exception {
    compilationHelper
        .addSourceLines(
            "b/B.java",
            "package b;",
            "// BUG: Diagnostic contains: should be declared in a file named Test.java",
            "public class Test {",
            "}")
        .ignoreJavacErrors()
        .matchAllDiagnostics()
        .doTest();
  }
  
  @Test
  public void suppression() throws Exception {
    compilationHelper
        .addSourceLines(
            "b/Test.java", //
            "package b;",
            "@SuppressWarnings(\"ClassName\")",
            "class Green {}")
        .doTest();
  }
}