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, 4 insertions, 4 deletions

diff --git a/tools/unit_tests.py b/tools/unit_tests.py
index 439ea325f..f8cd1af64 100755
--- a/tools/unit_tests.py
+++ b/tools/unit_tests.py
@@ -3,8 +3,8 @@
 import sys
 import subprocess
 
-from http_server import spawn
-from util import DenoTestCase, test_main
+import http_server
+from test_util import DenoTestCase, run_tests
 
 
 class JsUnitTests(DenoTestCase):
@@ -24,5 +24,5 @@ class JsUnitTests(DenoTestCase):
 
 
 if __name__ == '__main__':
-    with spawn():
-        test_main()
+    with http_server.spawn():
+        run_tests()