added test cases for utils

Author: gautamkrishnar

test/unit-tests.js

@@ -0,0 +1,244 @@
+const assert = require('assert');
+const {
+  truncateString,
+  updateAndParseCompoundParams,
+  getParameterisedTemplate,
+  escapeHTML,
+  categoriesToArray
+} = require("../src/utils");
+
+describe('truncateString', () => {
+  it('should return the original string if its length is less than or equal to the specified length', () => {
+    const result = truncateString('Hello', 10);
+    assert.strictEqual(result, 'Hello');
+  });
+
+  it('should truncate the string and add "..." if the string is longer than the specified length', () => {
+    const result = truncateString('Hello, world!', 5);
+    assert.strictEqual(result, 'Hello...');
+  });
+
+  it('should handle strings with leading and trailing spaces correctly', () => {
+    const result = truncateString('  Hello, world!  ', 5);
+    assert.strictEqual(result, 'Hello...');
+  });
+
+  it('should return an empty string if an empty string is provided', () => {
+    const result = truncateString('', 5);
+    assert.strictEqual(result, '');
+  });
+
+  it('should return "..." if the specified length is zero', () => {
+    const result = truncateString('Hello', 0);
+    assert.strictEqual(result, '...');
+  });
+
+  it('should return "H..." if the specified length is 1 after trimming leading spaces', () => {
+    const result = truncateString('   Hello', 1);
+    assert.strictEqual(result, 'H...');
+  });
+
+  it('should correctly handle multi-byte characters', () => {
+    const result = truncateString('こんにちは世界', 5);
+    assert.strictEqual(result, 'こんにちは...');
+  });
+});
+
+describe('updateAndParseCompoundParams', () => {
+  it('should update the object with the correct key-value pair and return the source name when the source has compound parameters', () => {
+    const obj = {};
+    const result = updateAndParseCompoundParams('stackoverflow/Comment by $author/', obj);
+    assert.strictEqual(result, 'stackoverflow');
+    assert.deepStrictEqual(obj, {'stackoverflow': 'Comment by $author'});
+  });
+
+  it('should return the original source name if the source does not contain exactly 3 parts', () => {
+    const obj = {};
+    const result = updateAndParseCompoundParams('github', obj);
+    assert.strictEqual(result, 'github');
+    assert.deepStrictEqual(obj, {}); // Ensure obj is not modified
+  });
+
+  it('should handle cases where the source has only 2 parts and return the original source', () => {
+    const obj = {};
+    const result = updateAndParseCompoundParams('github/Issue', obj);
+    assert.strictEqual(result, 'github/Issue');
+    assert.deepStrictEqual(obj, {}); // Ensure obj is not modified
+  });
+
+  it('should handle cases where the source has more than 3 parts and return the original source', () => {
+    const obj = {};
+    const result = updateAndParseCompoundParams('stackoverflow/Comment by $author/extra/part', obj);
+    assert.strictEqual(result, 'stackoverflow/Comment by $author/extra/part');
+    assert.deepStrictEqual(obj, {}); // Ensure obj is not modified
+  });
+
+  it('should handle an empty string as the source and not update the object', () => {
+    const obj = {};
+    const result = updateAndParseCompoundParams('', obj);
+    assert.strictEqual(result, '');
+    assert.deepStrictEqual(obj, {}); // Ensure obj is not modified
+  });
+
+  it('should handle cases where the object is pre-populated', () => {
+    const obj = {existingKey: 'existingValue'};
+    const result = updateAndParseCompoundParams('stackoverflow/Comment by $author/', obj);
+    assert.strictEqual(result, 'stackoverflow');
+    assert.deepStrictEqual(obj, {existingKey: 'existingValue', 'stackoverflow': 'Comment by $author'});
+  });
+
+});
+
+describe('getParameterisedTemplate', () => {
+  it('should return an array of parameters when the template contains a valid key with parameters', () => {
+    const template = '$randomEmoji(💯,🔥,💫,🚀,🌮) $emojiKey(💯,🔥,💫)';
+    const result = getParameterisedTemplate(template, 'randomEmoji');
+    assert.deepStrictEqual(result, ['💯', '🔥', '💫', '🚀', '🌮']);
+  });
+
+  it('should return an array of parameters when the template contains another valid key with parameters', () => {
+    const template = '$randomEmoji(💯,🔥,💫,🚀,🌮) $emojiKey(💯,🔥,💫)';
+    const result = getParameterisedTemplate(template, 'emojiKey');
+    assert.deepStrictEqual(result, ['💯', '🔥', '💫']);
+  });
+
+  it('should return null if the key does not exist in the template', () => {
+    const template = '$randomEmoji(💯,🔥,💫,🚀,🌮) $emojiKey(💯,🔥,💫)';
+    const result = getParameterisedTemplate(template, 'missingKey');
+    assert.strictEqual(result, null);
+  });
+
+  it('should return null if the key exists but is not followed by an opening parenthesis', () => {
+    const template = '$randomEmoji💯,🔥,💫,🚀,🌮 $emojiKey(💯,🔥,💫)';
+    const result = getParameterisedTemplate(template, 'randomEmoji');
+    assert.strictEqual(result, null);
+  });
+
+  it('should handle templates with multiple occurrences of the same key', () => {
+    const template = '$randomEmoji(💯,🔥) and again $randomEmoji(💫,🚀)';
+    const result = getParameterisedTemplate(template, 'randomEmoji');
+    assert.deepStrictEqual(result, ['💯', '🔥']); // Only the first occurrence should be processed
+  });
+
+  it('should correctly parse keys with spaces around parameters', () => {
+    const template = '$randomEmoji( 💯 , 🔥 , 💫 ) $emojiKey( 💯,🔥 ,💫)';
+    const result = getParameterisedTemplate(template, 'randomEmoji');
+    assert.deepStrictEqual(result, ['💯', '🔥', '💫']); // Spaces should be trimmed
+  });
+
+  it('should return null if the template is empty', () => {
+    const template = '';
+    const result = getParameterisedTemplate(template, 'randomEmoji');
+    assert.strictEqual(result, null);
+  });
+
+  it('should return null if the key is empty', () => {
+    const template = '$randomEmoji(💯,🔥,💫,🚀,🌮)';
+    const result = getParameterisedTemplate(template, '');
+    assert.strictEqual(result, null);
+  });
+});
+
+describe('escapeHTML', () => {
+  it('should escape the ampersand character (&)', () => {
+    const result = escapeHTML('Rock & Roll');
+    assert.strictEqual(result, 'Rock & Roll');
+  });
+
+  it('should escape the less-than character (<)', () => {
+    const result = escapeHTML('5 < 10');
+    assert.strictEqual(result, '5 &lt; 10');
+  });
+
+  it('should escape the greater-than character (>)', () => {
+    const result = escapeHTML('10 > 5');
+    assert.strictEqual(result, '10 &gt; 5');
+  });
+
+  it('should escape the single quote character (\')', () => {
+    const result = escapeHTML("It's a test");
+    assert.strictEqual(result, 'It&#39;s a test');
+  });
+
+  it('should escape the double quote character (")', () => {
+    const result = escapeHTML('She said "Hello"');
+    assert.strictEqual(result, 'She said &quot;Hello&quot;');
+  });
+
+  it('should escape the opening parenthesis character (()', () => {
+    const result = escapeHTML('3 * (2 + 1)');
+    assert.strictEqual(result, '3 * &lpar;2 + 1&rpar;');
+  });
+
+  it('should escape the closing parenthesis character ())', () => {
+    const result = escapeHTML('Math.PI = 3.14');
+    assert.strictEqual(result, 'Math.PI = 3.14');
+  });
+
+  it('should escape multiple conflicting characters', () => {
+    const result = escapeHTML('if (a < b) { return "yes"; } else { return "no"; }');
+    assert.strictEqual(result, 'if &lpar;a &lt; b&rpar; { return &quot;yes&quot;; } else { return &quot;no&quot;; }');
+  });
+
+  it('should return the original string if there are no conflicting characters', () => {
+    const result = escapeHTML('No special characters');
+    assert.strictEqual(result, 'No special characters');
+  });
+
+  it('should return an empty string if the input is an empty string', () => {
+    const result = escapeHTML('');
+    assert.strictEqual(result, '');
+  });
+});
+
+describe('categoriesToArray', () => {
+  it('should return an array of strings when the input is an array of strings', () => {
+    const categories = ['C#', 'Controller'];
+    const result = categoriesToArray(categories);
+    assert.deepStrictEqual(result, ['C#', 'Controller']);
+  });
+  it('should return an array of strings when the input is an array of CategoryObj objects', () => {
+    const categories = [{_: 'C#'}, {_: 'Controller'}];
+    const result = categoriesToArray(categories);
+    assert.deepStrictEqual(result, ['C#', 'Controller']);
+  });
+
+  it('should return an array of strings when the input is a mixed array of strings and CategoryObj objects', () => {
+    const categories = ['Programming', {_: 'C#'}, {_: 'Controller'}, 'Tech'];
+    const result = categoriesToArray(categories);
+    assert.deepStrictEqual(result, ['Programming', 'C#', 'Controller', 'Tech']);
+  });
+
+  it('should return an empty array when the input is an empty array', () => {
+    const categories = [];
+    const result = categoriesToArray(categories);
+    assert.deepStrictEqual(result, []);
+  });
+
+  it('should return an empty array when the input is not an array', () => {
+    const categories = null;
+    const result = categoriesToArray(categories);
+    assert.deepStrictEqual(result, []);
+  });
+
+  it('should ignore objects without the "_" property', () => {
+    const categories = [{_: 'C#'}, {domain: 'http://example.com'}];
+    const result = categoriesToArray(categories);
+    assert.deepStrictEqual(result, ['C#']);
+  });
+
+  it('should return an empty array when the input array contains only objects without the "_" property', () => {
+    const categories = [{domain: 'http://example.com'}, {domain: 'http://example.org'}];
+    const result = categoriesToArray(categories);
+    assert.deepStrictEqual(result, []);
+  });
+
+  it('should handle a mix of valid and invalid objects', () => {
+    const categories = ['Programming', {_: 'C#'}, {domain: 'http://example.com'}, 'Tech'];
+    const result = categoriesToArray(categories);
+    assert.deepStrictEqual(result, ['Programming', 'C#', 'Tech']);
+  });
+
+});
+
+