Reland "[test] Fix cctest path separators on Windows"

Now run-tests.py understands "suite/foo/bar" with forward slashes for
command-line test selection on all test suites on all platforms.

Previously, file-based suites like mjsunit also accepted "mjsunit/foo\bar";
that behavior is sacrificed here in favor of unification. For the cctest
suite, OTOH, it wasn't possible on Windows to select specific tests at all.

Original review: https://codereview.chromium.org/1348653003/

This reverts commit 5f44a91059.

NOTRY=true

Review URL: https://codereview.chromium.org/1356613002

Cr-Commit-Position: refs/heads/master@{#30798}

test/intl/testcfg.py

@@ -46,7 +46,9 @@ class IntlTestSuite(testsuite.TestSuite):
       for filename in files:
         if (filename.endswith(".js") and filename != "assert.js" and
             filename != "utils.js"):
-          testname = os.path.join(dirname[len(self.root) + 1:], filename[:-3])
+          fullpath = os.path.join(dirname, filename)
+          relpath = fullpath[len(self.root) + 1 : -3]
+          testname = relpath.replace(os.path.sep, "/")
           test = testcase.TestCase(self, testname)
           tests.append(test)
     return tests

test/message/testcfg.py

@@ -52,7 +52,9 @@ class MessageTestSuite(testsuite.TestSuite):
       files.sort()
       for filename in files:
         if filename.endswith(".js"):
-          testname = os.path.join(dirname[len(self.root) + 1:], filename[:-3])
+          fullpath = os.path.join(dirname, filename)
+          relpath = fullpath[len(self.root) + 1 : -3]
+          testname = relpath.replace(os.path.sep, "/")
           test = testcase.TestCase(self, testname)
           tests.append(test)
     return tests

test/mjsunit/testcfg.py

@@ -52,7 +52,9 @@ class MjsunitTestSuite(testsuite.TestSuite):
       files.sort()
       for filename in files:
         if filename.endswith(".js") and filename != "mjsunit.js":
-          testname = os.path.join(dirname[len(self.root) + 1:], filename[:-3])
+          fullpath = os.path.join(dirname, filename)
+          relpath = fullpath[len(self.root) + 1 : -3]
+          testname = relpath.replace(os.path.sep, "/")
           test = testcase.TestCase(self, testname)
           tests.append(test)
     return tests

test/mozilla/testcfg.py

@@ -81,8 +81,9 @@ class MozillaTestSuite(testsuite.TestSuite):
         files.sort()
         for filename in files:
           if filename.endswith(".js") and not filename in FRAMEWORK:
-            testname = os.path.join(dirname[len(self.testroot) + 1:],
-                                    filename[:-3])
+            fullpath = os.path.join(dirname, filename)
+            relpath = fullpath[len(self.testroot) + 1 : -3]
+            testname = relpath.replace(os.path.sep, "/")
             case = testcase.TestCase(self, testname)
             tests.append(case)
     return tests
@@ -93,7 +94,7 @@ class MozillaTestSuite(testsuite.TestSuite):
     result += ["--expose-gc"]
     result += [os.path.join(self.root, "mozilla-shell-emulation.js")]
     testfilename = testcase.path + ".js"
-    testfilepath = testfilename.split(os.path.sep)
+    testfilepath = testfilename.split("/")
     for i in xrange(len(testfilepath)):
       script = os.path.join(self.testroot,
                             reduce(os.path.join, testfilepath[:i], ""),

test/test262-es6/testcfg.py

@@ -119,8 +119,9 @@ class Test262TestSuite(testsuite.TestSuite):
       files.sort()
       for filename in files:
         if filename.endswith(".js"):
-          testname = os.path.join(dirname[len(self.testroot) + 1:],
-                                  filename[:-3])
+          fullpath = os.path.join(dirname, filename)
+          relpath = fullpath[len(self.testroot) + 1 : -3]
+          testname = relpath.replace(os.path.sep, "/")
           case = testcase.TestCase(self, testname)
           tests.append(case)
     return tests

test/test262/testcfg.py

@@ -66,8 +66,9 @@ class Test262TestSuite(testsuite.TestSuite):
       files.sort()
       for filename in files:
         if filename.endswith(".js"):
-          testname = os.path.join(dirname[len(self.testroot) + 1:],
-                                  filename[:-3])
+          fullpath = os.path.join(dirname, filename)
+          relpath = fullpath[len(self.testroot) + 1 : -3]
+          testname = relpath.replace(os.path.sep, "/")
           case = testcase.TestCase(self, testname)
           tests.append(case)
     return tests

test/webkit/testcfg.py

@@ -55,7 +55,9 @@ class WebkitTestSuite(testsuite.TestSuite):
       files.sort()
       for filename in files:
         if filename.endswith(".js"):
-          testname = os.path.join(dirname[len(self.root) + 1:], filename[:-3])
+          fullpath = os.path.join(dirname, filename)
+          relpath = fullpath[len(self.root) + 1 : -3]
+          testname = relpath.replace(os.path.sep, "/")
           test = testcase.TestCase(self, testname)
           tests.append(test)
     return tests

tools/testrunner/local/testsuite.py

@@ -226,7 +226,7 @@ class TestSuite(object):
         continue
       if len(argpath) == 1 or (len(argpath) == 2 and argpath[1] == '*'):
         return  # Don't filter, run all tests in this suite.
-      path = os.path.sep.join(argpath[1:])
+      path = '/'.join(argpath[1:])
       if path[-1] == '*':
         path = path[:-1]
         globs.append(path)