[lit] Fail testing if a googletest executable crashes during test discovery

googletest formatted tests are discovered by running the test executable.
Previously testing would silently succeed if the test executable crashed
during the discovery process. Now testing fails with "error: unable to
discover google-tests ..." if the test executable exits with a non-zero status.

llvm-svn: 280455

diff --git a/llvm/utils/lit/lit/formats/googletest.py b/llvm/utils/lit/lit/formats/googletest.py
index f0250a3..8796eb5 100644 (file)
--- a/llvm/utils/lit/lit/formats/googletest.py
+++ b/llvm/utils/lit/lit/formats/googletest.py
@@ -35,7 +35,8 @@ class GoogleTest(TestFormat):
               lines = lines.replace('\r', '')
             lines = lines.split('\n')
         except:
-            litConfig.error("unable to discover google-tests in %r" % path)
+            litConfig.error("unable to discover google-tests in %r: %s"
+                            % (path, sys.exc_info()[1]))
             raise StopIteration
 
         nested_tests = []

diff --git a/llvm/utils/lit/lit/util.py b/llvm/utils/lit/lit/util.py
index 40a5771..288931a 100644 (file)
--- a/llvm/utils/lit/lit/util.py
+++ b/llvm/utils/lit/lit/util.py
@@ -65,10 +65,13 @@ def mkdir_p(path):
 
 def capture(args, env=None):
     """capture(command) - Run the given command (or argv list) in a shell and
-    return the standard output."""
+    return the standard output. Raises a CalledProcessError if the command
+    exits with a non-zero status."""
     p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
                          env=env)
     out,_ = p.communicate()
+    if p.returncode != 0:
+        raise subprocess.CalledProcessError(cmd=args, returncode=p.returncode)
     return convert_string(out)
 
 def which(command, paths = None):