Port dart:io Path tests to package:path.

pkg/path/test/windows_test.dart

Index: pkg/path/test/windows_test.dart
diff --git a/pkg/path/test/windows_test.dart b/pkg/path/test/windows_test.dart
index 74094397461b7ab0cb859318cd8557d20782ea1a..bfbcf347b2e63f7b8d96cfd6e4df9319169d54e7 100644
--- a/pkg/path/test/windows_test.dart
+++ b/pkg/path/test/windows_test.dart
@@ -184,6 +184,14 @@ main() {
       expect(() => builder.join('a', null, 'b'), throwsArgumentError);
       expect(() => builder.join(null, 'a'), throwsArgumentError);
     });
+    test('misc join tests ported from Path class', () {
+      expect(builder.join('a/', 'b/c/'), 'a/b/c/');
+      expect(builder.join(r'a\b\./c\..\\', r'd\..\.\..\\e\f\\'),
+             r'a\b\./c\..\\d\..\.\..\\e\f\\');
+      expect(builder.join(r'a\b', r'c\..\..\..\..'), r'a\b\c\..\..\..\..');
+      expect(builder.join('', ''), '');
+      expect(builder.join(r'a', 'b${builder.separator}'), r'a\b\');
+    });
   });
 
   group('joinAll', () {
@@ -238,10 +246,12 @@ main() {
 
   group('normalize', () {
     test('simple cases', () {
-      expect(builder.normalize(''), '');
+      expect(builder.normalize(''), '.');
       expect(builder.normalize('.'), '.');
       expect(builder.normalize('..'), '..');
       expect(builder.normalize('a'), 'a');
+      expect(builder.normalize(r'\'), '.');
+      expect(builder.normalize('/'), r'.');
       expect(builder.normalize('C:/'), r'C:\');
       expect(builder.normalize(r'C:\'), r'C:\');
       expect(builder.normalize(r'\\'), r'\\');
@@ -278,12 +288,19 @@ main() {
       expect(builder.normalize(r'c:\..'), r'c:\');
       expect(builder.normalize(r'A:/..\..\..'), r'A:\');
       expect(builder.normalize(r'b:\..\..\..\a'), r'b:\a');
+      expect(builder.normalize(r'b:\r\..\..\..\a\c\.\..'), r'b:\a');
       expect(builder.normalize(r'a\..'), '.');
+      expect(builder.normalize(r'..\a'), r'..\a');
+      expect(builder.normalize(r'c:\..\a'), r'c:\a');
+      // A path starting with '\' is not an absolute path on Windows.
+      expect(builder.normalize(r'\..\a'), r'..\a');
       expect(builder.normalize(r'a\b\..'), 'a');
+      expect(builder.normalize(r'..\a\b\..'), r'..\a');
       expect(builder.normalize(r'a\..\b'), 'b');
       expect(builder.normalize(r'a\.\..\b'), 'b');
       expect(builder.normalize(r'a\b\c\..\..\d\e\..'), r'a\d');
       expect(builder.normalize(r'a\b\..\..\..\..\c'), r'..\..\c');
+      expect(builder.normalize(r'a/b/c/../../..d/./.e/f././'), r'a\..d\.e\f.');
     });
 
     test('removes trailing separators', () {