Feat: Add Support for Zig, Nix, Lua (#498)

Extensive tests for each of the three languages were added

test/resources/repos/lua/test_repo/main.lua

@@ -0,0 +1,114 @@
+#!/usr/bin/env lua
+
+-- main.lua: Entry point for the test application
+
+local calculator = require("src.calculator")
+local utils = require("src.utils")
+
+local function print_banner()
+    print("=" .. string.rep("=", 40))
+    print("       Lua Test Repository")
+    print("=" .. string.rep("=", 40))
+end
+
+local function test_calculator()
+    print("\nTesting Calculator Module:")
+    print("5 + 3 =", calculator.add(5, 3))
+    print("10 - 4 =", calculator.subtract(10, 4))
+    print("6 * 7 =", calculator.multiply(6, 7))
+    print("15 / 3 =", calculator.divide(15, 3))
+    print("2^8 =", calculator.power(2, 8))
+    print("5! =", calculator.factorial(5))
+    
+    local numbers = {5, 2, 8, 3, 9, 1, 7}
+    print("Mean of", table.concat(numbers, ", "), "=", calculator.mean(numbers))
+    print("Median of", table.concat(numbers, ", "), "=", calculator.median(numbers))
+end
+
+local function test_utils()
+    print("\nTesting Utils Module:")
+    
+    -- String utilities
+    print("Trimmed '  hello  ' =", "'" .. utils.trim("  hello  ") .. "'")
+    local parts = utils.split("apple,banana,orange", ",")
+    print("Split 'apple,banana,orange' by ',' =", table.concat(parts, " | "))
+    print("'hello' starts with 'he' =", utils.starts_with("hello", "he"))
+    print("'world' ends with 'ld' =", utils.ends_with("world", "ld"))
+    
+    -- Table utilities
+    local t1 = {a = 1, b = 2}
+    local t2 = {b = 3, c = 4}
+    local merged = utils.table_merge(t1, t2)
+    print("Merged tables: a=" .. (merged.a or "nil") .. 
+          ", b=" .. (merged.b or "nil") .. 
+          ", c=" .. (merged.c or "nil"))
+    
+    -- Logger
+    local logger = utils.Logger:new("TestApp")
+    logger:info("Application started")
+    logger:debug("Debug information")
+    logger:warn("This is a warning")
+end
+
+local function interactive_calculator()
+    print("\nInteractive Calculator (type 'quit' to exit):")
+    while true do
+        io.write("Enter operation (e.g., '5 + 3'): ")
+        local input = io.read()
+        
+        if input == "quit" then
+            break
+        end
+        
+        -- Simple parser for basic operations
+        local a, op, b = input:match("(%d+)%s*([%+%-%*/])%s*(%d+)")
+        if a and op and b then
+            a = tonumber(a)
+            b = tonumber(b)
+            local result
+            
+            if op == "+" then
+                result = calculator.add(a, b)
+            elseif op == "-" then
+                result = calculator.subtract(a, b)
+            elseif op == "*" then
+                result = calculator.multiply(a, b)
+            elseif op == "/" then
+                local success, res = pcall(calculator.divide, a, b)
+                if success then
+                    result = res
+                else
+                    print("Error: " .. res)
+                    goto continue
+                end
+            end
+            
+            print("Result: " .. result)
+        else
+            print("Invalid input. Please use format: number operator number")
+        end
+        
+        ::continue::
+    end
+end
+
+-- Main execution
+local function main(args)
+    print_banner()
+    
+    if #args == 0 then
+        test_calculator()
+        test_utils()
+    elseif args[1] == "interactive" then
+        interactive_calculator()
+    elseif args[1] == "test" then
+        test_calculator()
+        test_utils()
+        print("\nAll tests completed!")
+    else
+        print("Usage: lua main.lua [interactive|test]")
+    end
+end
+
+-- Run main function
+main(arg or {})