Allow to exclude specific qualified names from import in tests

In tests, ImportFix imports the first available candidate. This can
lead to non-deterministic tests when multiple candidates are available.
With this fix, unwanted candidates can be excluded.

idea/idea-android/tests/org/jetbrains/kotlin/android/quickfix/AbstractAndroidQuickFixMultiFileTest.java

@@ -16,12 +16,15 @@
 
 package org.jetbrains.kotlin.android.quickfix;
 
+import com.intellij.codeInsight.ImportFilter;
 import com.intellij.facet.FacetManager;
 import com.intellij.facet.ModifiableFacetModel;
 import com.intellij.facet.impl.FacetUtil;
 import com.intellij.openapi.application.ApplicationManager;
+import com.intellij.openapi.extensions.Extensions;
 import org.jetbrains.android.facet.AndroidFacet;
 import org.jetbrains.kotlin.idea.quickfix.AbstractQuickFixMultiFileTest;
+import org.jetbrains.kotlin.idea.test.KotlinTestImportFilter;
 
 public abstract class AbstractAndroidQuickFixMultiFileTest extends AbstractQuickFixMultiFileTest {
 
@@ -29,10 +32,12 @@ public abstract class AbstractAndroidQuickFixMultiFileTest extends AbstractQuick
     protected void setUp() {
         super.setUp();
         addAndroidFacet();
+        Extensions.getRootArea().getExtensionPoint(ImportFilter.EP_NAME).registerExtension(KotlinTestImportFilter.INSTANCE);
     }
 
     @Override
     protected void tearDown() {
+        Extensions.getRootArea().getExtensionPoint(ImportFilter.EP_NAME).unregisterExtension(KotlinTestImportFilter.INSTANCE);
         AndroidFacet facet = FacetManager.getInstance(myModule).getFacetByType(AndroidFacet.getFacetType().getId());
         FacetUtil.deleteFacet(facet);
         super.tearDown();

idea/idea-test-framework/src/org/jetbrains/kotlin/idea/test/KotlinTestImportFilter.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2010-2017 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 org.jetbrains.kotlin.idea.test
+
+import com.intellij.codeInsight.ImportFilter
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.psi.PsiFile
+import org.jetbrains.kotlin.test.InTextDirectivesUtils
+
+object KotlinTestImportFilter : ImportFilter() {
+    override fun shouldUseFullyQualifiedName(targetFile: PsiFile, classQualifiedName: String): Boolean {
+        if (!ApplicationManager.getApplication().isUnitTestMode) {
+            return false
+        }
+        val doNotImport = InTextDirectivesUtils.findLinesWithPrefixesRemoved(targetFile.text, "// DO_NOT_IMPORT:")
+        return classQualifiedName in doNotImport
+    }
+}

idea/testData/android/quickfix/autoImports/androidRImport.after.kt

@@ -1,5 +1,6 @@
 // "Import" "true"
 // ERROR: Unresolved reference: R
+// DO_NOT_IMPORT: android.support.v7.appcompat.R
 
 package com.myapp.activity
 

idea/testData/android/quickfix/autoImports/androidRImport.before.Main.kt

@@ -1,5 +1,6 @@
 // "Import" "true"
 // ERROR: Unresolved reference: R
+// DO_NOT_IMPORT: android.support.v7.appcompat.R
 
 package com.myapp.activity