varargs: prefer object for primitive varargs only

java/java-tests/testSrc/com/intellij/psi/resolve/ResolveVarargsMethodTest.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright 2000-2011 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.psi.resolve;
+
+import com.intellij.psi.*;
+import org.jetbrains.annotations.NonNls;
+
+import static org.hamcrest.core.IsInstanceOf.instanceOf;
+import static org.junit.Assert.assertThat;
+
+public class ResolveVarargsMethodTest extends Resolve15TestCase {
+
+  public void testPrimitiveObject() throws Exception {
+    doTest(1);
+  }
+
+  public void testPrimitiveString() throws Exception {
+    doTest(2);
+  }
+
+  public void testObjectObject() throws Exception {
+    doTest(2);
+  }
+
+  //bug in javac; @see jdk7
+  public void testObjectObjectObject() throws Exception {
+    doTest(2);
+  }
+
+  public void testStringObject() throws Exception {
+    doTest(1);
+  }
+
+  public void testStringObjectString() throws Exception {
+    doTest(1);
+  }
+
+  public void testStringStringString() throws Exception {
+    doTest(2);
+  }
+
+  private void doTest(int resolved) throws Exception {
+    final PsiReference ref = configureByFile();
+    assertThat(ref, instanceOf(PsiReferenceExpression.class));
+    final PsiReferenceExpression refExpr = (PsiReferenceExpression)ref;
+    PsiCallExpression call = (PsiCallExpression) refExpr.getParent();
+    JavaResolveResult resolveResult = call.resolveMethodGenerics();
+    PsiElement element = resolveResult.getElement();
+    if (resolved == 1) {
+      assertNotNull(element);
+    } else {
+      assertNull(element);
+    }
+    final JavaResolveResult[] candidates = refExpr.multiResolve(false);
+    assertEquals(resolved, candidates.length);
+  }
+
+  private PsiReference configureByFile() throws Exception {
+    return configureByFile("method/varargs/" + getTestName(false) + ".java");
+  }
+  private static PsiMethod checkResolvesUnique(final PsiReference ref) {
+    assertThat(ref, instanceOf(PsiReferenceExpression.class));
+    final PsiReferenceExpression refExpr = (PsiReferenceExpression)ref;
+    final PsiElement parent = refExpr.getParent();
+    assertThat(parent, instanceOf(PsiMethodCallExpression.class));
+    final PsiMethodCallExpression expression = (PsiMethodCallExpression)parent;
+    final PsiMethod method = expression.resolveMethod();
+    assertNotNull(method);
+    return method;
+  }
+
+  private static void assertResolvesToMethodInClass(JavaResolveResult result, @NonNls String name) {
+    PsiMethod method = (PsiMethod)result.getElement();
+    assertNotNull(method);
+    assertTrue(result.isValidResult());
+    assertEquals(name, method.getContainingClass().getName());
+  }
+}