Add hit count test to testObsoleteHeaderDisappears

Author: Simon Warta

integrationtests.py

@@ -337,6 +337,7 @@ def testObsoleteHeaderDisappears(self):
         # A includes B
         with cd(os.path.join(ASSETS_DIR, "header-miss-obsolete")):
             compileCmd = CLCACHE_CMD + ["/I.", "/nologo", "/EHsc", "/c", "main.cpp"]
+            cache = clcache.Cache()
 
             with open("A.h", "w") as header:
                 header.write('#define INFO 1337\n')
@@ -346,13 +347,21 @@ def testObsoleteHeaderDisappears(self):
 
             subprocess.check_call(compileCmd)
 
+            with cache.statistics as stats:
+                oldMisses = stats.numHeaderChangedMisses()
+
+            # Make include B.h obsolete
             with open("A.h", "w") as header:
                 header.write('#define INFO 1337\n')
                 header.write('\n')
             os.remove("B.h")
 
             subprocess.check_call(compileCmd)
 
+            with cache.statistics as stats:
+                newMisses = stats.numHeaderChangedMisses()
+                self.assertEqual(newMisses, oldMisses+1)
+
 
 class TestRunParallel(unittest.TestCase):
     def _zeroStats(self):