[test] Nicer error message for missing executable. (#953)

Fixes issue #431.
WebAssembly · Jan 25, 2019 · 9136258 · 9136258
1 parent a2d1f4d
commit 9136258
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/test/core/run.py b/test/core/run.py
@@ -27,6 +27,15 @@
 outputDir = arguments.out
 inputFiles = arguments.file if arguments.file else glob.glob(os.path.join(inputDir, "*.wast"))
 
+if not os.path.exists(wasmCommand):
+  sys.stderr.write("""\
+Error: The executable '%s' does not exist.
+Provide the correct path with the '--wasm' flag.
+
+""" % (wasmCommand))
+  parser.print_help()
+  sys.exit(1)
+
 
 class RunTests(unittest.TestCase):
   def _runCommand(self, command, logPath, expectedExitCode = 0):