Bring back colorizer again with error results.

This was actually a pretty simple fix. When I switched the base
test result class to testtools I lost the methods that were
printing out the errors at the end. This adds the (colorized!)
methods so errors print successfully.

fixes bug 1159116

Change-Id: Ib09d7e18ddf27015ff735a30137421d865382359

run_tests.sh

@@ -129,7 +129,7 @@ function run_tests {
   if [ $coverage -eq 1 ]; then
     TESTRTESTS="$TESTRTESTS --coverage"
   else
-    TESTRTESTS="$TESTRTESTS --slowest"
+    TESTRTESTS="$TESTRTESTS"
   fi
 
   # Just run the test suites in current environment
@@ -137,7 +137,7 @@ function run_tests {
   testrargs=`echo "$testrargs" | sed -e's/^\s*\(.*\)\s*$/\1/'`
   TESTRTESTS="$TESTRTESTS --testr-args='--subunit $testropts $testrargs'"
   echo "Running \`${wrapper} $TESTRTESTS\`"
-  bash -c "${wrapper} $TESTRTESTS | ${wrapper} subunit2pyunit"
+  bash -c "${wrapper} $TESTRTESTS | ${wrapper} tools/colorizer.py"
   RESULT=$?
   set -e
 

tools/colorizer.py

@@ -302,6 +302,22 @@ class NovaTestResult(testtools.TestResult):
                 self._writeElapsedTime(elapsed)
                 self.stream.writeln()
 
+    def printErrors(self):
+        if self.showAll:
+            self.stream.writeln()
+        self.printErrorList('ERROR', self.errors)
+        self.printErrorList('FAIL', self.failures)
+
+    def printErrorList(self, flavor, errors):
+        for test, err in errors:
+            self.colorizer.write("=" * 70, 'red')
+            self.stream.writeln()
+            self.colorizer.write(flavor, 'red')
+            self.stream.writeln(": %s" % test.id())
+            self.colorizer.write("-" * 70, 'red')
+            self.stream.writeln()
+            self.stream.writeln("%s" % err)
+
 
 test = subunit.ProtocolTestCase(sys.stdin, passthrough=None)