metatable cloning (#16)

Co-authored-by: C <[email protected]>

src/Array/copyDeep.lua

@@ -18,13 +18,11 @@
 	```
 ]=]
 local function copyDeep<T>(array: { T }): { T }
-	local result = {}
+	local result = table.clone(array)
 
-	for _, value in ipairs(array) do
+	for index, value in array do
 		if type(value) == "table" then
-			table.insert(result, copyDeep(value))
-		else
-			table.insert(result, value)
+			result[index] = copyDeep(value) :: any
 		end
 	end
 

src/Array/copyDeep.spec.lua

@@ -26,4 +26,18 @@ return function()
 		expect(new[2]).to.equal(2)
 		expect(new[3]).never.to.equal(array[3])
 	end)
+
+	it("should copy metatables", function()
+		local meta = setmetatable({}, { __index = function() end })
+		local array = { { 1, 2, 3 }, { 4, 5, 6 }, meta }
+
+		local new = CopyDeep(array)
+
+		expect(new).to.be.a("table")
+		expect(new).never.to.equal(array)
+
+		expect(function()
+			return getmetatable(new[3])
+		end).to.be.a("function")
+	end)
 end

src/Dictionary/copyDeep.lua

@@ -18,13 +18,11 @@
   ```
 ]=]
 local function copyDeep<T>(dictionary: T): T
-	local new = {}
+	local new = table.clone(dictionary)
 
 	for key, value in pairs(dictionary) do
 		if type(value) == "table" then
 			new[key] = copyDeep(value)
-		else
-			new[key] = value
 		end
 	end
 

src/Dictionary/copyDeep.spec.lua

@@ -31,4 +31,22 @@ return function()
 
 		expect(new.hello.world).to.equal("goodbye")
 	end)
+
+	it("should copy metatables", function()
+		local meta = setmetatable({}, { __index = function() end })
+		local dictionary = {
+			hello = {},
+			world = {},
+			meta = meta,
+		}
+
+		local new = CopyDeep(dictionary)
+
+		expect(new).to.be.a("table")
+		expect(new).never.to.equal(dictionary)
+
+		expect(function()
+			return getmetatable(new[3])
+		end).to.be.a("function")
+	end)
 end

testez.toml

@@ -0,0 +1,67 @@
+# TestEZ
+[[afterAll.args]]
+type = "function"
+
+[[afterEach.args]]
+type = "function"
+
+[[beforeAll.args]]
+type = "function"
+
+[[beforeEach.args]]
+type = "function"
+
+[[describe.args]]
+type = "string"
+
+[[describe.args]]
+type = "function"
+
+[[describeFOCUS.args]]
+type = "string"
+
+[[describeFOCUS.args]]
+type = "function"
+
+[[describeSKIP.args]]
+type = "string"
+
+[[describeSKIP.args]]
+type = "function"
+
+[[expect.args]]
+type = "any"
+
+[[FIXME.args]]
+type = "string"
+required = false
+
+[FOCUS]
+args = []
+
+[[it.args]]
+type = "string"
+
+[[it.args]]
+type = "function"
+
+[[itFIXME.args]]
+type = "string"
+
+[[itFIXME.args]]
+type = "function"
+
+[[itFOCUS.args]]
+type = "string"
+
+[[itFOCUS.args]]
+type = "function"
+
+[[itSKIP.args]]
+type = "string"
+
+[[itSKIP.args]]
+type = "function"
+
+[SKIP]
+args = []