{"id":2032,"date":"2021-05-29T13:23:53","date_gmt":"2021-05-29T07:53:53","guid":{"rendered":"https:\/\/www.codingbroz.com\/?p=2032"},"modified":"2021-06-20T22:52:05","modified_gmt":"2021-06-20T17:22:05","slug":"day-27-testing-solution","status":"publish","type":"post","link":"https:\/\/www.codingbroz.com\/day-27-testing-solution\/","title":{"rendered":"Day 27: Testing | 30 Days Of Code | HackerRank Solution"},"content":{"rendered":"\n<p>Hello coders, today we are going to solve <strong>Day 27: Testing HackerRank Solution<\/strong> in <strong>C++<\/strong>, <strong>Java <\/strong>and <strong>Python<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/05\/day-27-tested-30-days-of-code-solution-codingbroz.png\" alt=\"Day 27: Testing \" class=\"wp-image-2034\" srcset=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/05\/day-27-tested-30-days-of-code-solution-codingbroz.png 1200w, https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/05\/day-27-tested-30-days-of-code-solution-codingbroz-768x432.png 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-663ac4ee948d5\" class=\"ez-toc-cssicon-toggle-label\"><label class=\"ez-toc-title\">Table of Contents<\/label>\n<span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #0090ff;color:#0090ff\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #0090ff;color:#0090ff\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-663ac4ee948d5\" checked \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.codingbroz.com\/day-27-testing-solution\/#Task\" title=\"Task\">Task<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.codingbroz.com\/day-27-testing-solution\/#Solution_%E2%80%93_Day_27_Testing\" title=\"Solution &#8211; Day 27: Testing\">Solution &#8211; Day 27: Testing<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.codingbroz.com\/day-27-testing-solution\/#Java\" title=\"Java\">Java<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.codingbroz.com\/day-27-testing-solution\/#Python\" title=\"Python\">Python<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Task\"><\/span><strong>Task<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>This problem is about unit testing.<\/p>\n\n\n\n<p>Your company needs a function that meets the following requirements:<\/p>\n\n\n\n<ul><li>For a given array of&nbsp;<strong><em>n<\/em><\/strong>&nbsp;integers, the function returns the index of the element with the minimum value in the array. If there is more than one element with the minimum value, it returns the smallest one.<\/li><li>If an empty array is passed to the function, it raises an exception. A colleague has written this method. The implementation in Python is listed below. Implementations in other languages can be found in the code template.<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>def minimum_index(seq):\n    if len(seq) == 0:\n        raise ValueError(\"Cannot get the minimum value index from an empty sequence\")\n    min_idx = 0\n    for i in range(1, len(seq)):\n        if a&#91;i] &lt; a&#91;min_idx]:\n            min_idx = i\n    return min_idx<\/code><\/pre>\n\n\n\n<p>A coworker has prepared functions that will perform the tests and validate return values. Finish the implementation of&nbsp;&nbsp;classes to provide data and expected results for the tests.<\/p>\n\n\n\n<p>Complete the following methods.<\/p>\n\n\n\n<p>In the class&nbsp;<code>TestDataEmptyArray<\/code>:<\/p>\n\n\n\n<ul><li><code>get_array()<\/code>&nbsp;returns an empty array<\/li><\/ul>\n\n\n\n<p>In the class&nbsp;<code>TestDataUniqueValues<\/code>:<\/p>\n\n\n\n<ul><li><code>get_array()<\/code>&nbsp;returns an array of size at least 2 with all unique elements<\/li><li><code>get_expected_result()<\/code>&nbsp;returns the expected minimum value index for this array<\/li><\/ul>\n\n\n\n<p>In the class&nbsp;<code>TestDataExactlyTwoDifferentMinimums<\/code>:<\/p>\n\n\n\n<ul><li><code>get_array()<\/code>&nbsp;returns an array where the minimum value occurs at exactly 2 indices<\/li><li><code>get_expected_result()<\/code>&nbsp;returns the expected index<\/li><\/ul>\n\n\n\n<p>Take a look at the code template to see the exact implementation of functions that your colleague already implemented.<\/p>\n\n\n\n<p>Note: The arrays are indexed from&nbsp;<strong>0<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solution_%E2%80%93_Day_27_Testing\"><\/span><strong>Solution &#8211; Day 27: Testing<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Java\"><\/span><strong>Java<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"java\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import java.util.*;\n\npublic class Solution {\n    public static int minimum_index(int[] seq) {\n        if (seq.length == 0) {\n            throw new IllegalArgumentException(\"Cannot get the minimum value index from an empty sequence\");\n        }\n        int min_idx = 0;\n        for (int i = 1; i &lt; seq.length; ++i) {\n            if (seq[i] &lt; seq[min_idx]) {\n                min_idx = i;\n            }\n        }\n        return min_idx;\n    }\n    static class TestDataEmptyArray {\n        public static int[] get_array() {\n        int arr[]={};\n        return arr;\n        }\n    }\n    static class TestDataUniqueValues {\n        public static int[] get_array() {\n            \/\/ complete this function\n            int arr[]={1,2,3,4,5};\n        return arr;\n        }\n        public static int get_expected_result() {\n            \/\/ complete this function\n            return 0;\n        }\n    }\n    static class TestDataExactlyTwoDifferentMinimums {\n        public static int[] get_array() {\n            \/\/ complete this function\n            int arr[]={1,3,1};\n        return arr;\n        }\n        public static int get_expected_result() {\n            \/\/ complete this function\n            return 0;\n        }\n    }\n public static void TestWithEmptyArray() {\n        try {\n            int[] seq = TestDataEmptyArray.get_array();\n            int result = minimum_index(seq);\n        } catch (IllegalArgumentException e) {\n            return;\n        }\n        throw new AssertionError(\"Exception wasn't thrown as expected\");\n    }\n    public static void TestWithUniqueValues() {\n        int[] seq = TestDataUniqueValues.get_array();\n        if (seq.length &lt; 2) {\n            throw new AssertionError(\"less than 2 elements in the array\");\n        }\n        Integer[] tmp = new Integer[seq.length];\n        for (int i = 0; i &lt; seq.length; ++i) {\n            tmp[i] = Integer.valueOf(seq[i]);\n        }\n        if (!((new LinkedHashSet&lt;Integer>(Arrays.asList(tmp))).size() == seq.length)) {\n            throw new AssertionError(\"not all values are unique\");\n        }\n        int expected_result = TestDataUniqueValues.get_expected_result();\n        int result = minimum_index(seq);\n        if (result != expected_result) {\n            throw new AssertionError(\"result is different than the expected result\");\n        }\n    }\n    public static void TestWithExactlyTwoDifferentMinimums() {\n        int[] seq = TestDataExactlyTwoDifferentMinimums.get_array();\n        if (seq.length &lt; 2) {\n            throw new AssertionError(\"less than 2 elements in the array\");\n        }\n        int[] tmp = seq.clone();\n        Arrays.sort(tmp);\n        if (!(tmp[0] == tmp[1] &amp;&amp; (tmp.length == 2 || tmp[1] &lt; tmp[2]))) {\n            throw new AssertionError(\"there are not exactly two minimums in the array\");\n        }\n        int expected_result = TestDataExactlyTwoDifferentMinimums.get_expected_result();\n        int result = minimum_index(seq);\n        if (result != expected_result) {\n            throw new AssertionError(\"result is different than the expected result\");\n        }\n    }\n    public static void main(String[] args) {\n        TestWithEmptyArray();\n        TestWithUniqueValues();\n        TestWithExactlyTwoDifferentMinimums();\n        System.out.println(\"OK\");\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Python\"><\/span><strong>Python<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">def minimum_index(seq):\n    if len(seq) == 0:\n        raise ValueError(\"Cannot get the minimum value index from an empty sequence\")\n    min_idx = 0\n    for i in range(1, len(seq)):\n        if seq[i] &lt; seq[min_idx]:\n            min_idx = i\n    return min_idx\n\nclass TestDataEmptyArray(object):\n    \n    @staticmethod\n    def get_array():\n        return []\n        # complete this function\nclass TestDataUniqueValues(object):\n    data = []\n    for i in range(5):\n        data.append(i)\n    data[::-1]  \n    @staticmethod\n    def get_array():\n        return TestDataUniqueValues.data\n    @staticmethod\n    def get_expected_result():\n        data = TestDataUniqueValues.get_array()\n        return data.index(min(data))\n        # complete this function\n\nclass TestDataExactlyTwoDifferentMinimums(object):\n    data = []\n    for i in range(5):\n        data.append(i)\n    data[::-1] \n    data.insert(0,0)\n    \n    @staticmethod\n    def get_array():\n        return TestDataExactlyTwoDifferentMinimums.data\n    @staticmethod\n    def get_expected_result():\n        data = TestDataExactlyTwoDifferentMinimums.get_array()\n        return data.index(min(data))\n        # complete this function\n\n\ndef TestWithEmptyArray():\n    try:\n        seq = TestDataEmptyArray.get_array()\n        result = minimum_index(seq)\n    except ValueError as e:\n        pass\n    else:\n        assert False\n\n\ndef TestWithUniqueValues():\n    seq = TestDataUniqueValues.get_array()\n    assert len(seq) >= 2\n\n    assert len(list(set(seq))) == len(seq)\n\n    expected_result = TestDataUniqueValues.get_expected_result()\n    result = minimum_index(seq)\n    assert result == expected_result\n\n\ndef TestiWithExactyTwoDifferentMinimums():\n    seq = TestDataExactlyTwoDifferentMinimums.get_array()\n    assert len(seq) >= 2\n    tmp = sorted(seq)\n    assert tmp[0] == tmp[1] and (len(tmp) == 2 or tmp[1] &lt; tmp[2])\n\n    expected_result = TestDataExactlyTwoDifferentMinimums.get_expected_result()\n    result = minimum_index(seq)\n    assert result == expected_result\n\nTestWithEmptyArray()\nTestWithUniqueValues()\nTestiWithExactyTwoDifferentMinimums()\nprint(\"OK\")<\/pre>\n\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\n<ins class=\"adsbygoogle\"\n     style=\"display:block; text-align:center;\"\n     data-ad-layout=\"in-article\"\n     data-ad-format=\"fluid\"\n     data-ad-client=\"ca-pub-5246141430412355\"\n     data-ad-slot=\"8798433565\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<p><strong>Disclaimer:<\/strong> The above Problem <strong>(<a href=\"https:\/\/www.hackerrank.com\/challenges\/30-testing\/problem\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"rank-math-link\">Day 27: Testing<\/a>)<\/strong> is generated by <strong>Hacker Rank<\/strong> but the Solution is Provided by <strong>CodingBroz<\/strong>. This tutorial is only for<strong> Educational<\/strong> and <strong>Learning<\/strong> Purpose.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hello coders, today we are going to solve Day 27: Testing HackerRank Solution in C++, Java and Python.<\/p>\n","protected":false},"author":1,"featured_media":2034,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9,160],"tags":[80,18],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/05\/day-27-tested-30-days-of-code-solution-codingbroz.png","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/2032"}],"collection":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/comments?post=2032"}],"version-history":[{"count":3,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/2032\/revisions"}],"predecessor-version":[{"id":3541,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/2032\/revisions\/3541"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/media\/2034"}],"wp:attachment":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/media?parent=2032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/categories?post=2032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/tags?post=2032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}