first dive into koans

Author: Afshin Mokhtari

.gitignore

@@ -1,2 +1,3 @@
 *.swp
-.idea
+.idea
+.DS*

topics/about_asserts.js

@@ -2,13 +2,13 @@
 module("About Asserts (topics/about_asserts.js)");
 
 test("ok", function() {
-    ok(__ === true, 'what will satisfy the ok assertion?');
+    ok(true === true, 'what will satisfy the ok assertion?');
 });
 
 test("not ok", function() {
-    ok(__ === false, 'what is a false value?');
+    ok(false === false, 'what is a false value?');
 });
 
 test("equal", function() {
-    equal(__, 1 + 1, 'what will satisfy the equal assertion?');
+    equal(2, 1 + 1, 'what will satisfy the equal assertion?');
 });

topics/about_assignment.js

@@ -2,11 +2,11 @@
 module("About Assignment (topics/about_assignment.js)");
 
 test("local variables", function() {
-    var temp = __;
+    var temp = 1;
     equal(temp, 1, "Assign a value to the variable temp");
 });
 
 test("global variables", function() {
     temp = 1; // Not using var is an example. Always use var in practise.
-    equal(window.__, temp, 'global variables are assigned to the window object');
+    equal(window.temp, temp, 'global variables are assigned to the window object');
 });

topics/about_control_structures.js

@@ -5,15 +5,15 @@ test("if", function() {
 	if (2 > 0) {
 		isPositive = true;
 	}
-	equal(__, isPositive,  'what is the value of isPositive?');
+	equal(true, isPositive,  'what is the value of isPositive?');
 });
 
 test("for", function() {
 	var counter = 10;
 	for (var i = 1; i <= 3; i++) {
 		counter = counter + i;
 	}
-	equal(__, counter, 'what is the value of counter?');
+	equal(16, counter, 'what is the value of counter?');
 });
 
 test("for in", function() {
@@ -27,15 +27,15 @@ test("for in", function() {
 	for (var property_name in person) {
   		result = result + property_name;
 	};
-	equal(__, result, 'what is the value of result?');
+	equal('nameage', result, 'what is the value of result?');
 });
 
 test("ternary operator", function() {
 	var fruit = true ? "apple" : "orange";
-	equal(__, fruit, 'what is the value of fruit?');
+	equal('apple', fruit, 'what is the value of fruit?');
 
 	fruit = false ? "apple" : "orange";
-	equal(__, fruit, 'now what is the value of fruit?');
+	equal('orange', fruit, 'now what is the value of fruit?');
 });
 
 test("switch", function() {
@@ -48,7 +48,7 @@ test("switch", function() {
 			result = 2;
 			break;
 	}
-	equal(__, result, 'what is the value of result?');
+	equal(2, result, 'what is the value of result?');
 });
 
 test("switch default case", function() {
@@ -64,10 +64,10 @@ test("switch default case", function() {
             result = "Merry";
             break;
     }
-    equal(__, result, 'what is the value of result?');
+    equal("Merry", result, 'what is the value of result?');
 });
 
 test("null coalescing", function() {
     var result = null || "a value";
-    equal(__, result, 'what is the value of result?');
+    equal('a value', result, 'what is the value of result?');
 });

topics/about_equality.js

@@ -2,22 +2,22 @@
 module("About Equality (topics/about_equality.js)");
 
 test("numeric equality", function() {
-    equal(3 + __,  7, "");
+    equal(3 + 4,  7, "");
 });
 
 test("string equality", function() {
-    equal("3" + __, "37", "concatenate the strings");
+    equal("3" + "7", "37", "concatenate the strings");
 });
 
 test("equality without type coercion", function() {
-    ok(3 === __, 'what is exactly equal to 3?');
+    ok(3 === 3, 'what is exactly equal to 3?');
 });
 
 test("equality with type coercion", function() {
-    ok(3 == "__", 'what string is equal to 3, with type coercion?');
+    ok(3 == "3", 'what string is equal to 3, with type coercion?');
 });
 
 test("string literals", function() {
-    equal(__, "frankenstein", "quote types are interchangable, but must match.");
-    equal(__, 'frankenstein', "quote types can use both single and double quotes.");
+    equal("frankenstein", "frankenstein", "quote types are interchangable, but must match.");
+    equal('frankenstein', 'frankenstein', "quote types can use both single and double quotes.");
 });

topics/about_numbers.js

@@ -4,13 +4,13 @@ module("About Numbers (topics/about_numbers.js)");
 test("types", function() {
     var typeOfIntegers = typeof(6);
     var typeOfFloats = typeof(3.14159);
-    equal(__, typeOfIntegers === typeOfFloats, 'are ints and floats the same type?');
-    equal(__, typeOfIntegers, 'what is the javascript numeric type?');
-    equal(__, 1.0, 'what is a integer number equivalent to 1.0?');
+    equal(true, typeOfIntegers === typeOfFloats, 'are ints and floats the same type?');
+    equal('number', typeOfIntegers, 'what is the javascript numeric type?');
+    equal(1, 1.0, 'what is a integer number equivalent to 1.0?');
 });
 
 test("NaN", function() {
     var resultOfFailedOperations = 7/'apple';
-    equal(__, isNaN(resultOfFailedOperations), 'what will satisfy the equals assertion?');
-    equal(__, resultOfFailedOperations == NaN, 'is NaN == NaN?');
+    equal(true, isNaN(resultOfFailedOperations), 'what will satisfy the equals assertion?');
+    equal(false, resultOfFailedOperations == NaN, 'is NaN == NaN?');
 });

topics/about_objects.js

@@ -3,30 +3,30 @@ module("About Objects (topics/about_objects.js)");
 
 test("object type", function() {
     var empty_object = {};
-    equal(__, typeof(empty_object), 'what is the type of an object?');
+    equal('object', typeof(empty_object), 'what is the type of an object?');
 });
 
 test("object literal notation", function() {
     var person = {
-        __:__,
-        __:__
+        name:'Amory Blaine',
+        age :102
     };
     equal("Amory Blaine", person.name, "what is the person's name?");
     equal(102, person.age, "what is the person's age?");
 });
 
 test("dynamically adding properties", function() {
     var person = {};
-    person.__ = "Amory Blaine";
-    person.__ = 102;
+    person.name = "Amory Blaine";
+    person.age = 102;
     equal("Amory Blaine", person.name, "what is the person's name?");
     equal(102, person.age, "what is the person's age?");
 }); 
 
 test("adding properties from strings", function() {
     var person = {};
-    person["__"] = "Amory Blaine";
-    person["__"] = 102;
+    person["name"] = "Amory Blaine";
+    person["age"] = 102;
     equal("Amory Blaine", person.name, "what is the person's name?");
     equal(102, person.age, "what is the person's age?");
 });
@@ -36,7 +36,7 @@ test("adding functions", function() {
         name: "Amory Blaine",
         age: 102,
         toString: function() {
-            return __;  // HINT: use the 'this' keyword to refer to the person object.
+            return 'I ' + this.name + ' am ' + this.age + ' years old.';  // HINT: use the 'this' keyword to refer to the person object.
         }
     };
     equal("I Amory Blaine am 102 years old.", person.toString(), "what should the toString function be?");

topics/about_operators.js

@@ -7,7 +7,7 @@ test("addition", function() {
   for (var i = 0; i <= 5; i++) {
     result = result + i;
   }
-  equal(__, result, "What is the value of result?");
+  equal(15, result, "What is the value of result?");
 });
 
 test("assignment addition", function() {
@@ -16,23 +16,23 @@ test("assignment addition", function() {
     //the code below is just like saying result = result + i; but is more concise
     result += i;
   }
-  equal(__, result, "What is the value of result?");
+  equal(15, result, "What is the value of result?");
 });
 
 test("subtraction", function() {
   var result = 5;
   for (var i = 0; i <= 2; i++) {
     result = result - i;
   }
-  equal(__, result, "What is the value of result?");
+  equal(2, result, "What is the value of result?");
 });
 
 test("assignment subtraction", function() {
   var result = 5;
   for (var i = 0; i <= 2; i++) {
     result -= i;
   }
-  equal(__, result, "What is the value of result?");
+  equal(2, result, "What is the value of result?");
 });
 
 //Assignment operators are available for multiplication and division as well
@@ -43,5 +43,5 @@ test("modulus", function() {
   var x = 5;
   //again this is exactly the same as result = result % x
   result %= x;
-  equal(__, result, "What is the value of result?");
+  equal(0, result, "What is the value of result?");
 });

topics/about_strings.js

@@ -4,31 +4,31 @@ module("About Strings (topics/about_strings.js)");
 test("delimiters", function() {
     var singleQuotedString = 'apple';
     var doubleQuotedString = "apple";
-    equal(__, singleQuotedString === doubleQuotedString, 'are the two strings equal?');
+    equal(true, singleQuotedString === doubleQuotedString, 'are the two strings equal?');
 });
 
 test("concatenation", function() {
     var fruit = "apple";
     var dish = "pie";
-    equal(__, fruit + " " + dish, 'what is the value of fruit + " " + dish?');
+    equal('apple pie', fruit + " " + dish, 'what is the value of fruit + " " + dish?');
 });
 
 test("character Type", function() {
     var characterType = typeof("Amory".charAt(1)); // typeof will be explained in about reflection
-    equal(__, characterType, 'Javascript has no character type');
+    equal("string", characterType, 'Javascript has no character type');
 });
 
 test("escape character", function() {
     var stringWithAnEscapedCharacter  = "\u0041pple";
-    equal(__, stringWithAnEscapedCharacter, 'what  is the value of stringWithAnEscapedCharacter?');
+    equal("\u0041pple", stringWithAnEscapedCharacter, 'what  is the value of stringWithAnEscapedCharacter?');
 });
 
 test("string.length", function() {
     var fruit = "apple";
-    equal(__, fruit.length, 'what is the value of fruit.length?');
+    equal(5, fruit.length, 'what is the value of fruit.length?');
 });
 
 test("slice", function() {
     var fruit = "apple pie";
-    equal(__, fruit.slice(0,5), 'what is the value of fruit.slice(0,5)?');
+    equal('apple', fruit.slice(0,5), 'what is the value of fruit.slice(0,5)?');
 });

topics/about_truthyness.js

@@ -3,20 +3,20 @@ module("About Truthyness (topics/about_truthyness.js)");
 
 test("truthyness of positive numbers", function() {
     var oneIsTruthy = 1 ? true : false;
-    equal(__, oneIsTruthy, 'is one truthy?');
+    equal(true, oneIsTruthy, 'is one truthy?');
 });
 
 test("truthyness of negative numbers", function() {
     var negativeOneIsTruthy = -1 ? true : false;
-    equal(__, negativeOneIsTruthy, 'is -1 truthy?');
+    equal(true, negativeOneIsTruthy, 'is -1 truthy?');
 });
 
 test("truthyness of zero", function() {
     var zeroIsTruthy = 0 ? true : false;
-    equal(__, zeroIsTruthy, 'is 0 truthy?');
+    equal(false, zeroIsTruthy, 'is 0 truthy?');
 });
 
 test("truthyness of null", function() {
     var nullIsTruthy = null ? true : false;
-    equal(__, nullIsTruthy, 'is null truthy?');
+    equal(false, nullIsTruthy, 'is null truthy?');
 });