Support symlinks in .relativize() and .contains()

spec/app/directory-spec.coffee

@@ -74,3 +74,35 @@ describe "Directory", ->
         expect(entry.symlink).toBeTruthy()
       else
         expect(entry.symlink).toBeFalsy()
+
+  describe ".relativize(path)", ->
+    it "returns a relative path based on the directory's path", ->
+      absolutePath = directory.getPath()
+      expect(directory.relativize(path.join(absolutePath, "b"))).toBe "b"
+      expect(directory.relativize(path.join(absolutePath, "b/file.coffee"))).toBe "b/file.coffee"
+      expect(directory.relativize(path.join(absolutePath, "file.coffee"))).toBe "file.coffee"
+
+    it "returns a relative path based on the directory's symlinked source path", ->
+      symlinkPath = path.join(fsUtils.resolveOnLoadPath('fixtures'), 'symlink-to-dir')
+      symlinkDirectory = new Directory(symlinkPath)
+      realFilePath = fsUtils.resolveOnLoadPath('fixtures/dir/a')
+      expect(symlinkDirectory.relativize(realFilePath)).toBe 'a'
+
+    it "returns the full path if the directory's path is not a prefix of the path", ->
+      expect(directory.relativize('/not/relative')).toBe '/not/relative'
+
+  describe ".contains(path)", ->
+    it "returns true if the path is a child of the directory's path", ->
+      absolutePath = directory.getPath()
+      expect(directory.contains(path.join(absolutePath, "b"))).toBe true
+      expect(directory.contains(path.join(absolutePath, "b/file.coffee"))).toBe true
+      expect(directory.contains(path.join(absolutePath, "file.coffee"))).toBe true
+
+    it "returns true if the path is a child of the directory's symlinked source path", ->
+      symlinkPath = path.join(fsUtils.resolveOnLoadPath('fixtures'), 'symlink-to-dir')
+      symlinkDirectory = new Directory(symlinkPath)
+      realFilePath = fsUtils.resolveOnLoadPath('fixtures/dir/a')
+      expect(symlinkDirectory.contains(realFilePath)).toBe true
+
+    it "returns false if the directory's path is not a prefix of the path", ->
+      expect(directory.contains('/not/relative')).toBe false

spec/app/project-spec.coffee

@@ -111,13 +111,6 @@ describe "Project", ->
       it "does not modify uris that begin with a scheme", ->
         expect(project.resolve('http://zombo.com')).toBe 'http://zombo.com'
 
-  describe ".relativize(path)", ->
-    it "returns an relative path based on the project's root", ->
-      absolutePath = fsUtils.resolveOnLoadPath('fixtures/dir')
-      expect(project.relativize(path.join(absolutePath, "b"))).toBe "b"
-      expect(project.relativize(path.join(absolutePath, "b/file.coffee"))).toBe "b/file.coffee"
-      expect(project.relativize(path.join(absolutePath, "file.coffee"))).toBe "file.coffee"
-
   describe ".setPath(path)", ->
     describe "when path is a file", ->
       it "sets its path to the files parent directory and updates the root directory", ->