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<h1>arrays_spec.sl</h1>
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<td class="line-num">1</td>
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<td class="code-content"><pre>// ============================================================================</pre></td>
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<td class="code-content"><pre>// Arrays Test Suite</pre></td>
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<td class="code-content"><pre>// ============================================================================</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="code-content"><pre>describe("Array Operations", fn() {</pre></td>
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<td class="code-content"><pre> test("array indexing", fn() {</pre></td>
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<td class="line-num">7</td>
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<td class="code-content"><pre> let arr = ["a", "b", "c"];</pre></td>
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<td class="line-num">8</td>
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<td class="code-content"><pre> assert_eq(arr[0], "a");</pre></td>
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<td class="line-num">9</td>
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<td class="code-content"><pre> assert_eq(arr[1], "b");</pre></td>
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<td class="line-num">10</td>
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<td class="code-content"><pre> assert_eq(arr[2], "c");</pre></td>
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<td class="line-num">11</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">12</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">13</td>
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<td class="code-content"><pre> test("array index assignment", fn() {</pre></td>
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<td class="line-num">14</td>
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<td class="code-content"><pre> let arr = [1, 2, 3];</pre></td>
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<td class="line-num">15</td>
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<td class="code-content"><pre> arr[1] = 20;</pre></td>
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<td class="line-num">16</td>
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<td class="code-content"><pre> assert_eq(arr[1], 20);</pre></td>
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<td class="line-num">17</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">18</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">19</td>
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<td class="code-content"><pre> test("array spread operator", fn() {</pre></td>
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<td class="line-num">20</td>
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<td class="code-content"><pre> let a = [1, 2];</pre></td>
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<td class="line-num">21</td>
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<td class="code-content"><pre> let b = [3, 4];</pre></td>
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<td class="line-num">22</td>
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<td class="code-content"><pre> let c = [...a, ...b];</pre></td>
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<td class="line-num">23</td>
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<td class="code-content"><pre> assert_eq(len(c), 4);</pre></td>
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<td class="line-num">24</td>
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<td class="code-content"><pre> assert_eq(c[0], 1);</pre></td>
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<td class="line-num">25</td>
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<td class="code-content"><pre> assert_eq(c[3], 4);</pre></td>
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<td class="line-num">26</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">27</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">28</td>
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<td class="code-content"><pre> test("array of mixed types", fn() {</pre></td>
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<td class="line-num">29</td>
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<td class="code-content"><pre> let arr = [1, "two", true, null];</pre></td>
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<td class="line-num">30</td>
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<td class="code-content"><pre> assert_eq(arr[0], 1);</pre></td>
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<td class="line-num">31</td>
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<td class="code-content"><pre> assert_eq(arr[1], "two");</pre></td>
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<td class="line-num">32</td>
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<td class="code-content"><pre> assert_eq(arr[2], true);</pre></td>
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<td class="line-num">33</td>
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<td class="code-content"><pre> assert_null(arr[3]);</pre></td>
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<td class="line-num">34</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">36</td>
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<td class="code-content"><pre> test("nested array indexing", fn() {</pre></td>
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<td class="line-num">37</td>
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<td class="code-content"><pre> let arr = [[1, 2], [3, 4], [5, 6]];</pre></td>
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<td class="line-num">38</td>
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<td class="code-content"><pre> assert_eq(arr[0][1], 2);</pre></td>
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<td class="line-num">39</td>
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<td class="code-content"><pre> assert_eq(arr[2][0], 5);</pre></td>
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<td class="line-num">40</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">41</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">42</td>
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<td class="code-content"><pre> test("array with negative index", fn() {</pre></td>
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<td class="line-num">43</td>
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<td class="code-content"><pre> let arr = [10, 20, 30];</pre></td>
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<td class="line-num">44</td>
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<td class="code-content"><pre> assert_eq(arr[-1], 30);</pre></td>
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<td class="line-num">45</td>
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<td class="code-content"><pre> assert_eq(arr[-2], 20);</pre></td>
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<td class="line-num">46</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">47</td>
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<td class="code-content"><pre>});</pre></td>
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<td class="line-num">48</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">49</td>
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<td class="code-content"><pre>describe("Array Methods", fn() {</pre></td>
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<td class="line-num">50</td>
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<td class="code-content"><pre> test("map on array", fn() {</pre></td>
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<td class="line-num">51</td>
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<td class="code-content"><pre> let arr = [1, 2, 3];</pre></td>
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<td class="line-num">52</td>
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<td class="code-content"><pre> let doubled = arr.map(fn(x) { return x * 2; });</pre></td>
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<td class="line-num">53</td>
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<td class="code-content"><pre> assert_eq(doubled[0], 2);</pre></td>
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<td class="line-num">54</td>
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<td class="code-content"><pre> assert_eq(doubled[1], 4);</pre></td>
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<td class="line-num">55</td>
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<td class="code-content"><pre> assert_eq(doubled[2], 6);</pre></td>
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<td class="line-num">56</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">57</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">58</td>
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<td class="code-content"><pre> test("filter on array", fn() {</pre></td>
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<td class="line-num">59</td>
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<td class="code-content"><pre> let arr = [1, 2, 3, 4, 5];</pre></td>
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<td class="line-num">60</td>
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<td class="code-content"><pre> let evens = arr.filter(fn(x) { return x % 2 == 0; });</pre></td>
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<td class="line-num">61</td>
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<td class="code-content"><pre> assert_eq(len(evens), 2);</pre></td>
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<td class="line-num">62</td>
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<td class="code-content"><pre> assert_eq(evens[0], 2);</pre></td>
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<td class="line-num">63</td>
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<td class="code-content"><pre> assert_eq(evens[1], 4);</pre></td>
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<td class="line-num">64</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">65</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">66</td>
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<td class="code-content"><pre> test("each on array", fn() {</pre></td>
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<td class="line-num">67</td>
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<td class="code-content"><pre> let arr = ["a", "b", "c"];</pre></td>
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<td class="line-num">68</td>
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<td class="code-content"><pre> let result = "";</pre></td>
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<td class="line-num">69</td>
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<td class="code-content"><pre> arr.each(fn(x) { result = result + x; });</pre></td>
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<td class="line-num">70</td>
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<td class="code-content"><pre> assert_eq(result, "abc");</pre></td>
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<td class="line-num">71</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">72</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">73</td>
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<td class="code-content"><pre> test("reduce on array", fn() {</pre></td>
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<td class="line-num">74</td>
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<td class="code-content"><pre> let arr = [1, 2, 3, 4];</pre></td>
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<td class="line-num">75</td>
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<td class="code-content"><pre> let sum = arr.reduce(fn(acc, x) { return acc + x; }, 0);</pre></td>
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<td class="line-num">76</td>
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<td class="code-content"><pre> assert_eq(sum, 10);</pre></td>
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<td class="line-num">77</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">78</td>
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<td class="code-content"><pre>});</pre></td>
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