Expose deno.exit() and add test.

js/deno.ts

@@ -1,6 +1,4 @@
 // Copyright 2018 the Deno authors. All rights reserved. MIT license.
 // Public deno module.
-// TODO get rid of deno.d.ts
-// export { pub, sub } from "./dispatch";
-export { readFileSync } from "./os";
+export { exit, readFileSync } from "./os";
 export { libdeno } from "./globals";

tests/exit_error42.ts

@@ -0,0 +1,5 @@
+import * as deno from "deno";
+
+console.log("before");
+deno.exit(42);
+console.log("after");

tests/exit_error42.ts.out

@@ -0,0 +1 @@
+before

tools/check_output_test.py

@@ -7,7 +7,7 @@
 import os
 import sys
 import subprocess
-from util import pattern_match
+from util import pattern_match, parse_exit_code
 
 root_path = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
 tests_path = os.path.join(root_path, "tests")
@@ -27,21 +27,23 @@ def check_output_test(deno_exe_filename):
         with open(out_abs, 'r') as f:
             expected_out = f.read()
         cmd = [deno_exe_filename, script_abs]
-        should_succeed = "error" not in script
+        expected_code = parse_exit_code(script)
         print " ".join(cmd)
-        err = False
+        actual_code = 0
         try:
             actual_out = subprocess.check_output(cmd, universal_newlines=True)
         except subprocess.CalledProcessError as e:
-            err = True
+            actual_code = e.returncode
             actual_out = e.output
-            if should_succeed == True:
+            if expected_code == 0:
                 print "Expected success but got error. Output:"
                 print actual_out
                 sys.exit(1)
 
-        if should_succeed == False and err == False:
-            print "Expected an error but succeeded. Output:"
+        if expected_code != actual_code:
+            print "Expected exit code %d but got %d" % (expected_code,
+                                                        actual_code)
+            print "Output:"
             print actual_out
             sys.exit(1)
 

tools/util.py

@@ -1,5 +1,6 @@
 # Copyright 2018 the Deno authors. All rights reserved. MIT license.
 import os
+import re
 import shutil
 import stat
 import sys
@@ -162,3 +163,13 @@ def pattern_match(pattern, string, wildcard="[WILDCARD]"):
         string = string[(found + len(parts[i])):]
 
     return len(string) == 0
+
+
+def parse_exit_code(s):
+    codes = [int(d or 1) for d in re.findall(r'error(\d*)', s)]
+    if len(codes) > 1:
+        assert False, "doesn't support multiple error codes."
+    elif len(codes) == 1:
+        return codes[0]
+    else:
+        return 0

tools/util_test.py

@@ -1,5 +1,5 @@
 # Copyright 2018 the Deno authors. All rights reserved. MIT license.
-from util import pattern_match
+from util import pattern_match, parse_exit_code
 
 
 def pattern_match_test():
@@ -27,5 +27,17 @@ def pattern_match_test():
                          "[BAR]") == False, "expected wildcard to be set"
 
 
+def parse_exit_code_test():
+    print "Testing util.parse_exit_code()..."
+    assert 54 == parse_exit_code('hello_error54_world')
+    assert 1 == parse_exit_code('hello_error_world')
+    assert 0 == parse_exit_code('hello_world')
+
+
 def util_test():
     pattern_match_test()
+    parse_exit_code_test()
+
+
+if __name__ == '__main__':
+    util_test()