Proper specs for SgrInterpreter

spec/javascripts/player/sgr_interpreter_spec.js.coffee

@@ -1,6 +1,64 @@
 describe 'AsciiIo.SgrInterpreter', ->
+  interpreter = new AsciiIo.SgrInterpreter
 
-  describe '#reset', ->
+  expectChange = (numbers, hash) ->
+    attrs = interpreter.parse numbers
+    expect(attrs).toEqual hash
 
-  describe '#buildBrush', ->
+  describe '#parse', ->
 
+    it 'resets brush for 0', ->
+      expectChange [0], AsciiIo.Brush.default().attributes()
+
+    it 'sets bright attr for 1', ->
+      expectChange [1], bright: true
+
+    it 'sets italic attr for 3', ->
+      expectChange [3], italic: true
+
+    it 'sets underline attr for 4', ->
+      expectChange [4], underline: true
+
+    it 'sets blink attr for 5', ->
+      expectChange [5], blink: true
+
+    it 'unsets italic for 23', ->
+      expectChange [23], italic: false
+
+    it 'unsets underline attr for 24', ->
+      expectChange [24], underline: false
+
+    it 'unsets blink attr for 25', ->
+      expectChange [25], blink: false
+
+    it 'sets foreground for 30-37', ->
+      expectChange [30], fg: 0
+      expectChange [32], fg: 2
+      expectChange [37], fg: 7
+
+    it 'sets foreground for 38;5;x', ->
+      expectChange [38, 5, 100], fg: 100
+
+    it 'resets foreground for 39', ->
+      expectChange [39], fg: undefined
+
+    it 'sets background for 40-47', ->
+      expectChange [40], bg: 0
+      expectChange [44], bg: 4
+      expectChange [47], bg: 7
+
+    it 'sets background for 48;5;x', ->
+      expectChange [48, 5, 200], bg: 200
+
+    it 'resets background for 49', ->
+      expectChange [49], bg: undefined
+
+    it 'sets foreground for 90-97', ->
+      expectChange [90], fg: 0
+      expectChange [93], fg: 3
+      expectChange [97], fg: 7
+
+    it 'sets background for 100-107', ->
+      expectChange [100], bg: 0
+      expectChange [103], bg: 3
+      expectChange [107], bg: 7