Added support for bin, dec, hex modes to formatter. Unit tests support

src/js/app.js

@@ -7,7 +7,8 @@
 
     app.set('cmdConfig', core.ObservableObject.create({
         emphasizeBytes: true,
-        theme: 'dark'
+        theme: 'dark',
+        mode: 'dec'
     }));
 
     app.debugMode = false;

src/js/app/bitwise/formatter.js

@@ -2,27 +2,38 @@ app.set("formatter", function() {
     "use strict";
 
     var should = app.get('should');
+    var is = app.get('is');
 
     return {
-        toBinaryString: function(num, totalLength) {
+        formatString: function(num, mode) {
+            mode = mode || "bin";
 
-            var binaryStr = num.toString(2),
-                formatted = [],
-                i;
+            var convertedString = num.toString(getBase(mode));
+            return convertedString;
 
-            if(totalLength != null) {
-                should.bePositiveInteger(totalLength);
+        },
+        padLeft: function (str, length, symbol) {
+            var sb = Array.prototype.slice.call(str), symbol = symbol || "0";
+
+            if(length == null) {
+                return str;
             }
 
-            for(i = 0; i<binaryStr.length; i++) {
-                formatted.push(binaryStr[i]);
+            while(length > sb.length) {
+                sb.unshift(symbol);
             }
 
-            while(totalLength > formatted.length) {
-                formatted.unshift('0');
-            }
+            return sb.join('');
+        }
+    };
 
-            return formatted.join('');
+
+
+    function getBase(mode) {
+        switch (mode){
+            case 'bin': return 2;
+            case 'hex': return 16;
+            case 'dec': return 10;
         }
     }
 });

src/js/app/modelViews.js

@@ -14,9 +14,9 @@ app.compose(function () {
 
             var model = Object.create(expr);
             model.result = result;
-            model.operand1Binary = formatter.toBinaryString(expr.operand1, maxLen);
-            model.operand2Binary = formatter.toBinaryString(expr.operand2, maxLen);
-            model.resultBinary = formatter.toBinaryString(result, maxLen);
+            model.operand1Binary = formatter.padLeft(formatter.formatString(expr.operand1), maxLen);
+            model.operand2Binary = formatter.padLeft(formatter.formatString(expr.operand2), maxLen);
+            model.resultBinary = formatter.padLeft(formatter.formatString(result), maxLen);
 
             var templateId = /<<|>>/.test(model.sign) ? 'shiftExpressionView' : 'binaryExpressionView';
             var template = app.template(templateId)
@@ -43,7 +43,7 @@ app.compose(function () {
                 binCell.className = 'bin';
 
                 decCell.textContent = o;
-                binCell.textContent = formatter.toBinaryString(o, maxLen);
+                binCell.textContent = formatter.formatString(o, maxLen);
             });
 
             colorizeBits(table);

src/js/core/is.js

@@ -28,6 +28,10 @@
 
         array: function(obj) {
             return obj instanceof Array;
+        },
+
+        number: function(num) {
+            return typeof num == "number" && !isNaN(num)
         }
     };
 })();

src/js/core/should.js

@@ -1,9 +1,10 @@
 (function(){
     "use strict";
-    
+    var is = window.core.is;
+
     window.core.should = {
         beNumber: function (num, name) {
-            this.check(typeof num == "number" && !isNaN(num), num + " is not a number");
+            this.check(is.number(num), num + " is not a number");
             this.check(isFinite(num), append(name, "is an infinite number"));
         },
 

tests/domain/formatterSpec.js

@@ -0,0 +1,20 @@
+describe('expression formatter', function () {
+    var di = app.di.clone();
+    var formatter = di.resolve('formatter');
+
+    it('should format number to binary by default', function() {
+        expect(formatter.formatString(10)).toBe("1010");
+    });
+
+    it('should format number hexadecimal', function() {
+        expect(formatter.formatString(15, 'hex')).toBe("f");
+    });
+
+    it('should format number decimal', function() {
+        expect(formatter.formatString(16, 'dec')).toBe('16');
+    });
+
+    it('should respect padding', function() {
+        expect(formatter.padLeft("a", 6)).toBe("00000a");
+    });
+});