Adding basic tests for keyboard.js

IPython/html/tests/base/keyboard.js

@@ -0,0 +1,49
+
+
+var normalized_shortcuts = [
+    'ctrl+shift+m',
+    'alt+meta+p',
+];
+
+var to_normalize = [
+    ['shift+%', 'shift+5'],
+    ['ShiFT+MeTa+CtRl+AlT+m', 'alt+ctrl+meta+shift+m'],
+];
+
+var unshifted = "` 1 2 3 4 5 6 7 8 9 0 - = q w e r t y u i o p [ ] \\ a s d f g h j k l ; ' z x c v b n m , . /";
+//  shifted   = '~ ! @ # $ % ^ & * ( ) _ + Q W E R T Y U I O P { } |  A S D F G H J K L : " Z X C V B N M < > ?';
+
+casper.notebook_test(function () {
+
+    this.then(function () {
+        this.each(unshifted.split(' '), function (self, item) {
+            var result = this.evaluate(function (sc) {
+                var e = IPython.keyboard.shortcut_to_event(sc);
+                var sc2 = IPython.keyboard.event_to_shortcut(e);
+                return sc2;
+            }, item);
+            this.test.assertEquals(result, item, 'Shortcut to event roundtrip: '+item);
+        });
+    });
+
+    this.then(function () {
+        this.each(to_normalize, function (self, item) {
+            var result = this.evaluate(function (pair) {
+                return IPython.keyboard.normalize_shortcut(pair[0]);
+            }, item);
+            this.test.assertEquals(result, item[1], 'Normalize shortcut: '+item[0]);
+        });
+    })
+
+    this.then(function () {
+        this.each(normalized_shortcuts, function (self, item) {
+            var result = this.evaluate(function (sc) {
+                var e = IPython.keyboard.shortcut_to_event(sc);
+                var sc2 = IPython.keyboard.event_to_shortcut(e);
+                return sc2;
+            }, item);
+            this.test.assertEquals(result, item, 'Shortcut to event roundtrip: '+item);
+        });
+    });
+
+});
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