diff --git a/java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/InferredTypeTest.java b/java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/InferredTypeTest.java new file mode 100644 index 000000000000..541a519b8099 --- /dev/null +++ b/java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/InferredTypeTest.java @@ -0,0 +1,52 @@ +/* + * Copyright 2000-2014 JetBrains s.r.o. + * + * 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.intellij.codeInsight.daemon.lambda; + +import com.intellij.psi.PsiElement; +import com.intellij.psi.PsiExpression; +import com.intellij.psi.PsiIdentifier; +import com.intellij.psi.PsiType; +import com.intellij.testFramework.LightProjectDescriptor; +import com.intellij.testFramework.fixtures.LightCodeInsightFixtureTestCase; +import org.jetbrains.annotations.NotNull; +import org.junit.Assert; + +public class InferredTypeTest extends LightCodeInsightFixtureTestCase { + public void testNestedCallReturnType() throws Exception { + myFixture.configureByText("a.java", "import java.util.List;\n" + + "abstract class Test {\n" + + " abstract R foo(K k1, K k2);\n" + + " {\n" + + " String str = \"\";\n" + + " List l = foo(foo(str, str), str);\n" + + " }\n" + + "}\n"); + final PsiElement elementAtCaret = myFixture.getFile().findElementAt(myFixture.getCaretOffset()); + Assert.assertTrue(elementAtCaret instanceof PsiIdentifier); + + final PsiElement refExpr = elementAtCaret.getParent(); + Assert.assertTrue(refExpr.toString(), refExpr instanceof PsiExpression); + final PsiType type = ((PsiExpression)refExpr).getType(); + Assert.assertNotNull(refExpr.toString(), type); + Assert.assertTrue(type.getCanonicalText(), type.equalsToText("java.util.List")); + } + + @NotNull + @Override + protected LightProjectDescriptor getProjectDescriptor() { + return JAVA_8; + } +}