when there are matching variants in autopopup, hide the lookup (IDEA-60835)

java/java-tests/testSrc/com/intellij/codeInsight/completion/JavaAutoPopupTest.groovy

@@ -38,11 +38,12 @@ class JavaAutoPopupTest extends CompletionAutoPopupTestCase {
     assertEquals 'iterable', lookup.currentItem.lookupString
 
     type('er')
-    assertOrderedEquals myFixture.lookupElementStrings, "iter", "iterable"
-    assertEquals 'iter', lookup.currentItem.lookupString
+    assert !lookup
+    //assertOrderedEquals myFixture.lookupElementStrings, "iter", "iterable"
+    //assertEquals 'iter', lookup.currentItem.lookupString
   }
 
-  public void testRecalculateItemsOnBackspace() {
+  public void _testRecalculateItemsOnBackspace() {
     myFixture.configureByText("a.java", """
       class Foo {
         void foo(String iterable) {
@@ -195,4 +196,25 @@ class JavaAutoPopupTest extends CompletionAutoPopupTestCase {
     """
   }
 
+  public void testHideAutopopupIfItContainsExactMatch() {
+    myFixture.configureByText("a.java", """
+      class Foo {
+        String foo() {
+          int abcd;
+          int abcde;
+          int abcdefg;
+          ab<caret>
+        }
+      }
+    """)
+    type 'c'
+    assert lookup
+    type 'd'
+    assert !lookup
+    type 'e'
+    assert !lookup
+    type 'f'
+    assert lookup
+  }
+
 }