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81 lines
2.7 KiB
81 lines
2.7 KiB
/*
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* Copyright (C) 2017 The Dagger Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dagger.internal.codegen.javapoet;
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import static com.google.common.truth.Truth.assertThat;
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import com.google.auto.common.MoreTypes;
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import com.google.testing.compile.CompilationRule;
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import dagger.internal.codegen.langmodel.DaggerElements;
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import dagger.internal.codegen.langmodel.DaggerTypes;
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import javax.lang.model.type.PrimitiveType;
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import javax.lang.model.type.TypeKind;
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import javax.lang.model.type.TypeMirror;
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import org.junit.Before;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.junit.runners.JUnit4;
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@RunWith(JUnit4.class)
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public class ExpressionTest {
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@Rule public CompilationRule compilationRule = new CompilationRule();
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private DaggerElements elements;
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private DaggerTypes types;
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interface Supertype {}
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interface Subtype extends Supertype {}
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@Before
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public void setUp() {
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elements = new DaggerElements(compilationRule.getElements(), compilationRule.getTypes());
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types = new DaggerTypes(compilationRule.getTypes(), elements);
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}
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@Test
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public void castTo() {
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TypeMirror subtype = type(Subtype.class);
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TypeMirror supertype = type(Supertype.class);
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Expression expression = Expression.create(subtype, "new $T() {}", subtype);
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Expression castTo = expression.castTo(supertype);
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assertThat(castTo.type()).isSameInstanceAs(supertype);
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assertThat(castTo.codeBlock().toString())
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.isEqualTo(
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"(dagger.internal.codegen.javapoet.ExpressionTest.Supertype) "
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+ "new dagger.internal.codegen.javapoet.ExpressionTest.Subtype() {}");
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}
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@Test
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public void box() {
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PrimitiveType primitiveInt = types.getPrimitiveType(TypeKind.INT);
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Expression primitiveExpression = Expression.create(primitiveInt, "5");
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Expression boxedExpression = primitiveExpression.box(types);
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assertThat(boxedExpression.codeBlock().toString()).isEqualTo("(java.lang.Integer) 5");
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assertThat(MoreTypes.equivalence().equivalent(boxedExpression.type(), type(Integer.class)))
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.isTrue();
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}
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private TypeMirror type(Class<?> clazz) {
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return elements.getTypeElement(clazz).asType();
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}
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}
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