Refactored exception inheritance inspection tests to highlighting tests

python/testData/inspections/PyExceptionInheritInspection/expected.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<problems>
-  <problem>
-    <file>test.py</file>
-    <line>7</line>
-    <description>Exception doesn't inherit from base 'Exception' class</description>
-  </problem>
-</problems>

python/testData/inspections/PyExceptionInheritInspection/test.py

@@ -0,0 +1,13 @@
+def test_basic():
+    class A(object):
+        pass
+
+    class C(A):
+        pass
+
+    raise <warning descr="Exception doesn't inherit from base 'Exception' class">C()</warning>
+
+    class D(C, Exception):
+      pass
+
+    raise D()

python/testSrc/com/jetbrains/python/PythonInspectionsTest.java

@@ -110,8 +110,7 @@ public class PythonInspectionsTest extends PyTestCase {
   }
 
   public void testPyExceptionInheritInspection() {
-    LocalInspectionTool inspection = new PyExceptionInheritInspection();
-    doTest(getTestName(false), inspection);
+    doHighlightingTest(PyExceptionInheritInspection.class);
   }
 
   public void testPyDefaultArgumentInspection() {