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<h1>arrays_builtin_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>// Array Functions 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 Functions", fn() {</pre></td>
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<td class="code-content"><pre> test("len() returns array length", fn() {</pre></td>
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<td class="line-num">7</td>
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<td class="code-content"><pre> assert_eq(len([1, 2, 3]), 3);</pre></td>
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<td class="line-num">8</td>
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<td class="code-content"><pre> assert_eq(len([]), 0);</pre></td>
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<td class="line-num">9</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">10</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">11</td>
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<td class="code-content"><pre> test("push() adds element to array", fn() {</pre></td>
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<td class="line-num">12</td>
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<td class="code-content"><pre> let arr = [1, 2];</pre></td>
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<td class="line-num">13</td>
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<td class="code-content"><pre> push(arr, 3);</pre></td>
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<td class="line-num">14</td>
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<td class="code-content"><pre> assert_eq(len(arr), 3);</pre></td>
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<td class="line-num">15</td>
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<td class="code-content"><pre> assert_eq(arr[2], 3);</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="line-num">18</td>
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<td class="code-content"><pre> test("pop() removes last element", fn() {</pre></td>
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<td class="line-num">19</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">20</td>
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<td class="code-content"><pre> let last = pop(arr);</pre></td>
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<td class="line-num">21</td>
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<td class="code-content"><pre> assert_eq(last, 3);</pre></td>
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<td class="line-num">22</td>
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<td class="code-content"><pre> assert_eq(len(arr), 2);</pre></td>
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<td class="line-num">23</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">24</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">25</td>
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<td class="code-content"><pre> test("range() creates array of numbers", fn() {</pre></td>
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<td class="line-num">26</td>
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<td class="code-content"><pre> let r = range(0, 5);</pre></td>
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<td class="line-num">27</td>
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<td class="code-content"><pre> assert_eq(len(r), 5);</pre></td>
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<td class="line-num">28</td>
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<td class="code-content"><pre> assert_eq(r[0], 0);</pre></td>
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<td class="line-num">29</td>
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<td class="code-content"><pre> assert_eq(r[4], 4);</pre></td>
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<td class="line-num">30</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">31</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">32</td>
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<td class="code-content"><pre> test("assert_contains works with arrays", fn() {</pre></td>
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<td class="code-content"><pre> let arr = [1, 2, 3];</pre></td>
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<td class="code-content"><pre> assert_contains(arr, 2);</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="line-num">37</td>
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<td class="code-content"><pre> test("first() returns first element", fn() {</pre></td>
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<td class="code-content"><pre> let arr = [1, 2, 3];</pre></td>
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<td class="code-content"><pre> assert_eq(first(arr), 1);</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="line-num">42</td>
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<td class="code-content"><pre> test("last() returns last element", fn() {</pre></td>
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<td class="code-content"><pre> let arr = [1, 2, 3];</pre></td>
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<td class="code-content"><pre> assert_eq(last(arr), 3);</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> test("reverse() reverses array", fn() {</pre></td>
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<td class="code-content"><pre> let arr = [1, 2, 3];</pre></td>
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<td class="code-content"><pre> let reversed = reverse(arr);</pre></td>
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<td class="code-content"><pre> assert_eq(reversed[0], 3);</pre></td>
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<td class="code-content"><pre> assert_eq(reversed[2], 1);</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="line-num">54</td>
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<td class="code-content"><pre> test("unique() removes duplicates", fn() {</pre></td>
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<td class="code-content"><pre> let arr = [1, 2, 2, 3, 3, 3];</pre></td>
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<td class="code-content"><pre> let uniq = unique(arr);</pre></td>
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<td class="line-num">57</td>
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<td class="code-content"><pre> assert_eq(len(uniq), 3);</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="line-num">60</td>
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<td class="code-content"><pre> test("flatten() flattens nested arrays", fn() {</pre></td>
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<td class="code-content"><pre> let arr = [[1, 2], [3, 4]];</pre></td>
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<td class="code-content"><pre> let flat = flatten(arr);</pre></td>
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<td class="code-content"><pre> assert_eq(len(flat), 4);</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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