javatests/dagger/internal/codegen/GenericMethodsTest.java

/*
 * Copyright (C) 2017 The Dagger Authors.
 *
 * 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 dagger.internal.codegen;

import androidx.room.compiler.processing.util.Source;
import com.google.common.collect.ImmutableList;
import dagger.testing.compile.CompilerTests;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

@RunWith(Parameterized.class)
public class GenericMethodsTest {
  @Parameters(name = "{0}")
  public static ImmutableList<Object[]> parameters() {
    return CompilerMode.TEST_PARAMETERS;
  }

  private final CompilerMode compilerMode;

  public GenericMethodsTest(CompilerMode compilerMode) {
    this.compilerMode = compilerMode;
  }

  @Test
  public void parameterizedComponentMethods() {
    Source component =
        CompilerTests.javaSource(
            "test.TestComponent",
            "package test;",
            "",
            "import dagger.Component;",
            "import dagger.MembersInjector;",
            "import java.util.Set;",
            "",
            "@Component",
            "interface TestComponent {",
            "  <T1> void injectTypeVariable(T1 type);",
            "  <T2> MembersInjector<T2> membersInjector();",
            "  <T3> Set<T3> setOfT();",
            "  <UNUSED> TestComponent unused();",
            "}");
    CompilerTests.daggerCompiler(component)
        .withProcessingOptions(compilerMode.processorOptions())
        .compile(
            subject -> {
              subject.hasErrorCount(6);
              subject.hasErrorContaining("cannot have type variables")
                  .onSource(component)
                  .onLineContaining("<T1>");
              subject.hasErrorContaining("cannot have type variables")
                  .onSource(component)
                  .onLineContaining("<T2>");
              subject.hasErrorContaining("cannot have type variables")
                  .onSource(component)
                  .onLineContaining("<T3>");
              subject.hasErrorContaining("cannot have type variables")
                  .onSource(component)
                  .onLineContaining("<UNUSED>");
            });
  }
}