Refactor test infrastructure (#2432)

* use subclass of unittest.TestCase for all test cases

* allow to run single test file (eg. python tools/integration_tests.py)

* test filtering (via --pattern/-p CLI flag)

* use common CLI parser for all tests:
  usage: test.py [-h] [--failfast] [--verbose] [--executable EXECUTABLE]
               [--release] [--pattern PATTERN] [--build-dir BUILD_DIR]

  optional arguments:
  -h, --help            show this help message and exit
  --failfast, -f        Stop on first failure
  --verbose, -v         Verbose output
  --executable EXECUTABLE
                        Use external executable of Deno
  --release             Test against release executable
  --pattern PATTERN, -p PATTERN
                        Run tests that match provided pattern
  --build-dir BUILD_DIR
                        Deno build directory

* respect NO_COLOR variable

1 files changed, 3 insertions, 4 deletions

diff --git a/tools/fmt_test.py b/tools/fmt_test.py
index 1d21fb740..0be2d2eff 100755
--- a/tools/fmt_test.py
+++ b/tools/fmt_test.py
@@ -1,11 +1,10 @@
 #!/usr/bin/env python
 # Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
-import json
 import os
 import shutil
-import sys
 
-from util import (DenoTestCase, mkdtemp, root_path, tests_path, run, test_main)
+from test_util import DenoTestCase, run_tests
+from util import mkdtemp, root_path, tests_path, run
 
 
 class FmtTest(DenoTestCase):
@@ -43,4 +42,4 @@ class FmtTest(DenoTestCase):
 
 
 if __name__ == "__main__":
-    test_main()
+    run_tests()