Import LinuxCNC source tree

tests/interp/bad/test

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+import glob, os, sys
+
+fail = 0
+for t in sorted(glob.glob('*.ngc')):
+    sys.stderr.write("# {}".format(t))
+    error = open(t).readline()
+    if error.startswith(';'): expected = error[1:-1]
+    elif error.startswith('('): expected = error[1:-2]
+    else: expected = "%s: Test does not specify expected error" % t
+    p = os.popen("rs274 -g %s 2>&1 > /dev/null" % t)
+    output = p.readlines()
+    r = p.close()
+    print("# -> {}".format(r))
+    if not r:
+        print("%s: Interpreter accepted bad gcode" % t)
+        fail += 1
+        continue
+
+    if len(output) < 2:
+        print("%s: Unexpected interpreter output: %r" % output)
+        fail += 1
+        continue
+
+    err = output[-2].strip()
+    if err != expected:
+        print("%s: Expected %r, got %r instead" % (t, expected, err))
+        fail += 1
+
+if fail:
+    raise SystemExit("%d failures" % fail)