inline: don't check containing method call if inline to method reference

java/java-impl/src/com/intellij/refactoring/util/InlineUtil.java

@@ -27,7 +27,6 @@ import com.intellij.psi.search.LocalSearchScope;
 import com.intellij.psi.search.searches.ReferencesSearch;
 import com.intellij.psi.tree.IElementType;
 import com.intellij.psi.util.PsiTreeUtil;
-import com.intellij.psi.util.PsiTypesUtil;
 import com.intellij.psi.util.RedundantCastUtil;
 import com.intellij.refactoring.RefactoringBundle;
 import com.intellij.util.IncorrectOperationException;
@@ -297,6 +296,7 @@ public class InlineUtil {
 
   public static TailCallType getTailCallType(@NotNull final PsiReference psiReference) {
     PsiElement element = psiReference.getElement();
+    if (element instanceof PsiMethodReferenceExpression) return TailCallType.None;
     PsiExpression methodCall = PsiTreeUtil.getParentOfType(element, PsiMethodCallExpression.class);
     if (methodCall == null) return TailCallType.None;
     if (methodCall.getParent() instanceof PsiReturnStatement) return TailCallType.Return;

java/java-tests/testData/refactoring/inlineMethod/MethodReferenceInsideMethodCall.java

@@ -0,0 +1,14 @@
+
+import java.util.function.Supplier;
+class Foo {
+
+  static int m() {
+    return 1;
+  }
+
+  void o(){
+    mm(Foo::<caret>m);
+  }
+
+  void mm(Supplier<Integer> r) {}
+}

java/java-tests/testData/refactoring/inlineMethod/MethodReferenceInsideMethodCall.java.after

@@ -0,0 +1,10 @@
+
+import java.util.function.Supplier;
+class Foo {
+
+    void o(){
+    mm(() -> 1);
+  }
+
+  void mm(Supplier<Integer> r) {}
+}

java/java-tests/testSrc/com/intellij/refactoring/inline/InlineMethodTest.java

@@ -231,6 +231,10 @@ public class InlineMethodTest extends LightRefactoringTestCase {
     doTestConflict("Inline cannot be applied to multiline method in constructor call");
   }
 
+  public void testMethodReferenceInsideMethodCall() throws Exception {
+    doTest();
+  }
+
   private void doTestConflict(final String conflict) throws Exception {
     try {
       doTest();