Improve cwltest to handle keyboard interrupt. Now exit code 0 when there are

unsupported features but no failures.

Author: Peter Amstutz

cwltool/cwltest.py

@@ -125,7 +125,7 @@ def run_test(args, i, t):  # type: (argparse.Namespace, Any, Dict[str,str]) -> i
         _logger.error(u"Parse error %s", str(e))
     except KeyboardInterrupt:
         _logger.error(u"""Test interrupted: %s""", " ".join([pipes.quote(tc) for tc in test_command]))
-        return 1
+        raise
 
     failed = False
 
@@ -200,21 +200,29 @@ def main():  # type: () -> int
     else:
         ntest = range(0, len(tests))
 
-    for i in ntest:
-        t = tests[i]
-        sys.stderr.write("\rTest [%i/%i] " % (i+1, len(tests)))
-        sys.stderr.flush()
-        rt = run_test(args, i, t)
-        if rt == 1:
-            failures += 1
-        elif rt == UNSUPPORTED_FEATURE:
-            unsupported += 1
+    total = 0
+    try:
+        for i in ntest:
+            t = tests[i]
+            sys.stderr.write("\rTest [%i/%i] " % (i+1, len(tests)))
+            sys.stderr.flush()
+            rt = run_test(args, i, t)
+            total += 1
+            if rt == 1:
+                failures += 1
+            elif rt == UNSUPPORTED_FEATURE:
+                unsupported += 1
+    except KeyboardInterrupt:
+        _logger.error("Tests interrupted")
 
     if failures == 0 and unsupported == 0:
          _logger.info("All tests passed")
          return 0
+    elif failures == 0 and unsupported > 0:
+        _logger.warn("%i tests passed, %i unsupported features", total - unsupported, unsupported)
+        return 0
     else:
-        _logger.warn("%i failures, %i unsupported features", failures, unsupported)
+        _logger.warn("%i tests passed, %i failures, %i unsupported features", total - (failures + unsupported), failures, unsupported)
         return 1