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191
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1 var something;
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2
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3 TEST('class attributes', function()
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4 {
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5 var point = {};
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6 var Point = SimpleClass(point);
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7
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8 point.__init__ = function(x, y){
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9 // Please write your answer here.
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10 };
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11
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12 var pt = Point(3, 4);
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13
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14 assert( pt.x === 3 );
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15 assert( pt.y === 4 );
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16
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17 // Please write your answer here.
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18
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19 assert( pt.__classname__ === 'Point' );
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20
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21 });
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22
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23
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24 TEST('class methods', function()
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25 {
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26 var actual;
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27 var expect;
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28
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29 var person = {};
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30 var Person = SimpleClass(person);
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31
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32 // Initialise a person to have a name and an age.
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33 // Please write your answer here.
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34
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35
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36 // Test that we can create a person.
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37 var someone = Person('Bob', 26);
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38 assert( someone.name === 'Bob' );
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39 assert( someone.age === 26 );
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40
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41
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42 // Add a greet method to the class prototype object.
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43 person.greet = function(another){
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44 // Please write your answer here.
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45 };
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46
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47 // Test the greet method.
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48 var tmp = someone.greet('Alice');
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49 assert( tmp = something );
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50
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51 // Add a goodbye method.
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52 // Please write your answer here.
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53
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54 expect = "Goodbye, Alice. It was a pleasure to meet you.";
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55 actual = someone.goodbye('Alice');
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56 assert( actual === expect );
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57
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58 // A flaw in the design.
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59 var someone_else = Person('Alice', 31);
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60
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61 // Figure out what we get.
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62 expect = something;
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63 actual = someone.greet(someone_else);
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64 assert( actual === expect );
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65 });
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