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/*
* Copyright (C) 2016 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.javapoet;
import static com.google.common.truth.Truth.assertThat;
import static dagger.internal.codegen.javapoet.CodeBlocks.javadocLinkTo;
import static dagger.internal.codegen.javapoet.CodeBlocks.toParametersCodeBlock;
import static javax.lang.model.element.ElementKind.METHOD;
import com.google.testing.compile.CompilationRule;
import com.squareup.javapoet.CodeBlock;
import java.util.stream.Stream;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.util.Elements;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for {@link CodeBlocks}. */
@RunWith(JUnit4.class)
public final class CodeBlocksTest {
private static final CodeBlock objectO = CodeBlock.of("$T o", Object.class);
private static final CodeBlock stringS = CodeBlock.of("$T s", String.class);
private static final CodeBlock intI = CodeBlock.of("$T i", int.class);
@Rule public CompilationRule compilationRule = new CompilationRule();
private Elements elements;
@Before
public void setUp() {
this.elements = compilationRule.getElements();
}
@Test
public void testToParametersCodeBlock() {
assertThat(Stream.of(objectO, stringS, intI).collect(toParametersCodeBlock()))
.isEqualTo(CodeBlock.of("$T o, $T s, $T i", Object.class, String.class, int.class));
}
@Test
public void testToParametersCodeBlock_empty() {
assertThat(Stream.<CodeBlock>of().collect(toParametersCodeBlock())).isEqualTo(CodeBlock.of(""));
}
@Test
public void testToParametersCodeBlock_oneElement() {
assertThat(Stream.of(objectO).collect(toParametersCodeBlock())).isEqualTo(objectO);
}
@Test
public void testJavadocLinkTo() {
ExecutableElement equals =
elements
.getTypeElement(Object.class.getCanonicalName())
.getEnclosedElements()
.stream()
.filter(element -> element.getKind().equals(METHOD))
.map(ExecutableElement.class::cast)
.filter(method -> method.getSimpleName().contentEquals("equals"))
.findFirst()
.get();
assertThat(javadocLinkTo(equals))
.isEqualTo(CodeBlock.of("{@link $T#equals($T)}", Object.class, Object.class));
}
}