test: implement tests for queue and utils

Author: A7Lavinraj

lua/tests/test_queue.lua

@@ -0,0 +1,35 @@
+local Queue = require 'assistant.algos.queue'
+local test = require 'mini.test'
+local T = test.new_set()
+
+T['new() creates an empty queue'] = function()
+  local q = Queue.new()
+  test.expect.equality(q:empty(), true)
+  test.expect.equality(q:size(), 0)
+end
+
+T['push() adds elements to the queue'] = function()
+  local q = Queue.new()
+  q:push(10)
+  q:push(20)
+  test.expect.equality(q:size(), 2)
+  test.expect.equality(q:top(), 10)
+end
+
+T['pop() removes elements in FIFO order'] = function()
+  local q = Queue.new()
+  q:push 'a'
+  q:push 'b'
+  test.expect.equality(q:pop(), 'a')
+  test.expect.equality(q:pop(), 'b')
+  test.expect.equality(q:empty(), true)
+end
+
+T['top() returns the first element without removing it'] = function()
+  local q = Queue.new()
+  q:push 'x'
+  test.expect.equality(q:top(), 'x')
+  test.expect.equality(q:size(), 1)
+end
+
+return T

lua/tests/test_utils.lua

@@ -0,0 +1,29 @@
+local test = require 'mini.test'
+local utils = require 'assistant.utils'
+
+local T = test.new_set()
+
+T['to_snake_case'] = function()
+  local camel_case_to_snake = {
+    { input = 'camelCase', expected = 'camel_case' },
+    { input = 'PascalCase', expected = 'pascal_case' },
+    { input = 'snake_case', expected = 'snake_case' },
+    { input = 'already_Snake_Case', expected = 'already_snake_case' },
+    { input = 'MixOfALLFormats123HTML', expected = 'mix_of_all_formats_123_html' },
+    { input = 'HTMLParser', expected = 'html_parser' },
+    { input = 'NASA', expected = 'nasa' },
+    { input = 'snakeCaseWith123Numbers', expected = 'snake_case_with_123_numbers' },
+    { input = '   trimmed  String   ', expected = 'trimmed_string' },
+    { input = 'with  multiple     spaces', expected = 'with_multiple_spaces' },
+    { input = '', expected = '' },
+    { input = '12345', expected = '12345' },
+    { input = 'This__Is__Weird', expected = 'this_is_weird' },
+    { input = 'hello@world!', expected = 'helloworld' },
+  }
+
+  for _, case in ipairs(camel_case_to_snake) do
+    test.expect.equality(utils.to_snake_case(case.input), case.expected)
+  end
+end
+
+return T