Fix broken test. Properly initialize inspection tools in PyQuickFixTest and PyInspectionTestCase

Use InspectionProfileImpl.INIT_INSPECTIONS flag for this purpose.
Additionally I've added test case about black list in
PyShadowingBuiltinsInspection that works similarly to affected
PyUnresolvedReferencesInspection.

python/src/com/jetbrains/python/inspections/quickfix/AddIgnoredIdentifierQuickFix.java

@@ -16,13 +16,16 @@
 package com.jetbrains.python.inspections.quickfix;
 
 import com.intellij.codeInsight.intention.LowPriorityAction;
-import com.intellij.codeInspection.*;
+import com.intellij.codeInspection.InspectionProfile;
+import com.intellij.codeInspection.LocalQuickFix;
+import com.intellij.codeInspection.ModifiableModel;
+import com.intellij.codeInspection.ProblemDescriptor;
 import com.intellij.openapi.project.Project;
 import com.intellij.profile.codeInspection.InspectionProjectProfileManager;
 import com.intellij.psi.PsiElement;
+import com.intellij.psi.util.QualifiedName;
 import com.intellij.util.Consumer;
 import com.jetbrains.python.inspections.unresolvedReference.PyUnresolvedReferencesInspection;
-import com.intellij.psi.util.QualifiedName;
 import org.jetbrains.annotations.NotNull;
 
 /**
@@ -69,6 +72,7 @@ public class AddIgnoredIdentifierQuickFix implements LocalQuickFix, LowPriorityA
         if (myIgnoreAllAttributes) {
           name += END_WILDCARD;
         }
+        assert inspection != null;
         if (!inspection.ignoredIdentifiers.contains(name)) {
           inspection.ignoredIdentifiers.add(name);
         }

python/testData/inspections/IgnoreShadowingBuiltins.py

@@ -0,0 +1,6 @@
+def o<caret>pen():
+    pass
+
+# Sentinel definition to make sure that other warnings are still present
+def <weak_warning descr="Shadows built-in name 'input'">input</weak_warning>():
+    pass

python/testData/inspections/PyUnresolvedReferencesInspection/ignoredUnresolvedReferenceInUnionType.py

@@ -6,4 +6,7 @@ print(a.f<caret>oo)
 
 def func(c):
     x = A() if c else None
-    return x.foo
+    return x.foo
+
+# Sentinel reference to make sure that other warnings are still present
+<error descr="Unresolved reference 'UNRESOLVED'">UNRESOLVED</error>

python/testSrc/com/jetbrains/python/PyQuickFixTest.java

@@ -16,6 +16,7 @@
 package com.jetbrains.python;
 
 import com.intellij.codeInsight.intention.IntentionAction;
+import com.intellij.codeInspection.ex.InspectionProfileImpl;
 import com.intellij.testFramework.TestDataFile;
 import com.intellij.testFramework.TestDataPath;
 import com.jetbrains.python.codeInsight.PyCodeInsightSettings;
@@ -33,6 +34,18 @@ import org.jetbrains.annotations.NonNls;
 @TestDataPath("$CONTENT_ROOT/../testData/inspections/")
 public class PyQuickFixTest extends PyTestCase {
 
+  @Override
+  protected void setUp() throws Exception {
+    super.setUp();
+    InspectionProfileImpl.INIT_INSPECTIONS = true;
+  }
+
+  @Override
+  protected void tearDown() throws Exception {
+    InspectionProfileImpl.INIT_INSPECTIONS = false;
+    super.tearDown();
+  }
+
   public void testAddImport() {
     doInspectionTest(new String[] { "AddImport.py", "ImportTarget.py" }, PyUnresolvedReferencesInspection.class, "Import 'ImportTarget'", true, true);
   }
@@ -46,7 +59,7 @@ public class PyQuickFixTest extends PyTestCase {
   }
 
   public void testImportFromModule() {
-    doInspectionTest(new String[] { "importFromModule/foo/bar.py", "importFromModule/foo/baz.py", "importFromModule/foo/__init__.py" },
+    doInspectionTest(new String[]{"importFromModule/foo/bar.py", "importFromModule/foo/baz.py", "importFromModule/foo/__init__.py"},
                      PyUnresolvedReferencesInspection.class, "Import 'importFromModule.foo.baz'", true, true);
   }
 
@@ -470,6 +483,15 @@ public class PyQuickFixTest extends PyTestCase {
     myFixture.checkResultByFile(graftBeforeExt(fileName, "_after"));
   }
 
+  public void testIgnoreShadowingBuiltins() {
+    myFixture.configureByFile("IgnoreShadowingBuiltins.py");
+    myFixture.enableInspections(PyShadowingBuiltinsInspection.class);
+    final IntentionAction intentionAction = myFixture.getAvailableIntention("Ignore shadowed built-in name \"open\"");
+    assertNotNull(intentionAction);
+    myFixture.launchAction(intentionAction);
+    myFixture.checkHighlighting(true, false, true);
+  }
+
   // PY-8991
   public void testRemoveUnicodePrefixFromGluedStringNodesWithSlash() {
     runWithLanguageLevel(LanguageLevel.PYTHON32, new Runnable() {

python/testSrc/com/jetbrains/python/fixtures/PyInspectionTestCase.java

@@ -1,5 +1,6 @@
 package com.jetbrains.python.fixtures;
 
+import com.intellij.codeInspection.ex.InspectionProfileImpl;
 import com.jetbrains.python.inspections.PyInspection;
 import org.jetbrains.annotations.NotNull;
 
@@ -20,6 +21,18 @@ public abstract class PyInspectionTestCase extends PyTestCase {
   @NotNull
   protected abstract Class<? extends PyInspection> getInspectionClass();
 
+  @Override
+  protected void setUp() throws Exception {
+    super.setUp();
+    InspectionProfileImpl.INIT_INSPECTIONS = true;
+  }
+
+  @Override
+  protected void tearDown() throws Exception {
+    InspectionProfileImpl.INIT_INSPECTIONS = false;
+    super.tearDown();
+  }
+
   /**
    * Launches test. To be called by test author
    */