Import Cobalt 20.master.0.215766
diff --git a/src/third_party/web_platform_tests/tools/wpt/virtualenv.py b/src/third_party/web_platform_tests/tools/wpt/virtualenv.py
new file mode 100644
index 0000000..8f36aa9
--- /dev/null
+++ b/src/third_party/web_platform_tests/tools/wpt/virtualenv.py
@@ -0,0 +1,52 @@
+import os
+import sys
+import logging
+from distutils.spawn import find_executable
+
+from tools.wpt.utils import call
+
+logger = logging.getLogger(__name__)
+
+class Virtualenv(object):
+ def __init__(self, path):
+ self.path = path
+ self.virtualenv = find_executable("virtualenv")
+ if not self.virtualenv:
+ raise ValueError("virtualenv must be installed and on the PATH")
+
+ @property
+ def exists(self):
+ return os.path.isdir(self.path)
+
+ def create(self):
+ if os.path.exists(self.path):
+ shutil.rmtree(self.path)
+ call(self.virtualenv, self.path)
+
+ @property
+ def bin_path(self):
+ if sys.platform in ("win32", "cygwin"):
+ return os.path.join(self.path, "Scripts")
+ return os.path.join(self.path, "bin")
+
+ @property
+ def pip_path(self):
+ path = find_executable("pip", self.bin_path)
+ if path is None:
+ raise ValueError("pip not found")
+ return path
+
+ def activate(self):
+ path = os.path.join(self.bin_path, "activate_this.py")
+ execfile(path, {"__file__": path})
+
+ def start(self):
+ if not self.exists:
+ self.create()
+ self.activate()
+
+ def install(self, *requirements):
+ call(self.pip_path, "install", *requirements)
+
+ def install_requirements(self, requirements_path):
+ call(self.pip_path, "install", "-r", requirements_path)
