tests/weaschem: write tests for parse_id_map

.tests/parse/file/weaschem_id_map.test.lua

@@ -0,0 +1,132 @@
+local weaschem = require("worldeditadditions_core.utils.parse.file.weaschem")
+
+local parse_json = require("worldeditadditions_core.utils.parse.json")
+
+local function get_string(test_name)
+	if test_name:match("[^%w_]") then return nil end -- Just in case
+	local filename = ".tests/parse/file/testfiles/idmap_"..test_name..".json"
+	
+	local handle = io.open(filename, "r")
+	if handle == nil then return nil end
+	local content = handle:read("*a")
+	handle:close()
+	
+	return content
+end
+
+local epsilon = 0.000001
+local function validate_id_map(idmap, is_delta)
+	for node_id, node_name in pairs(idmap) do
+		assert.are.same("number", type(node_id))
+		assert.are.same("string", type(node_name))
+		assert.is_true(node_id - math.floor(node_id) < epsilon)
+		if is_delta then
+			assert.is_true(node_id >= -2)
+		else
+			assert.is_true(node_id >= -1)
+		end
+	end
+end
+
+describe("parse.file.weaschem.parse_id_map", function()
+	it("should parse a valid id map", function()
+		local content = '{"0": "default:stone","15":"default:dirt_with_grass"}'
+		local success, code, result = weaschem.parse_id_map(content)
+
+		assert.are.same(true, success)
+		assert.are.same("SUCCESS", code)
+		assert.are.same("table", type(result))
+		validate_id_map(result)
+		assert.are.same({
+			[0] = "default:stone",
+			[15] = "default:dirt_with_grass"
+		}, result)
+	end)
+	it("should parse a valid id map with multiple mods", function()
+		local content = '{"0": "default:stone","15":"default:dirt_with_grass","99":"another:blah"}'
+		local success, code, result = weaschem.parse_id_map(content)
+
+		assert.are.same(true, success)
+		assert.are.same("SUCCESS", code)
+		assert.are.same("table", type(result))
+		validate_id_map(result)
+		assert.are.same({
+			[0] = "default:stone",
+			[15] = "default:dirt_with_grass",
+			[99] = "another:blah"
+		}, result)
+	end)
+	it("should not parse an invalid id map", function()
+		local content = '{"0": "default:stone,"15":"default:dirt_with_grass"}'
+		local success, code, result = weaschem.parse_id_map(content)
+
+		assert.are.same(false, success)
+		assert.are.same("ID_MAP_INVALID_JSON", code)
+		assert.are.same("string", type(result))
+	end)
+	it("should not parse an id map with a relative node name", function()
+		local content = '{"0": "stone","15":"default:dirt_with_grass"}'
+		local success, code, result = weaschem.parse_id_map(content)
+
+		assert.are.same(false, success)
+		assert.are.same("ID_MAP_RELATIVE_NODE_NAME", code)
+		assert.are.same("string", type(result))
+	end)
+	it("should not parse an id map with a floating-point node ids", function()
+		local content = '{"0": "stone","15":"default:dirt_with_grass"}'
+		local success, code, result = weaschem.parse_id_map(content)
+
+		assert.are.same(false, success)
+		assert.are.same("ID_MAP_RELATIVE_NODE_NAME", code)
+		assert.are.same("string", type(result))
+	end)
+	it("should not parse an id map type full with invalid node id -1", function()
+		local content = '{"0": "default:stone","15":"default:dirt_with_grass","-1": "somemod:blah"}'
+		local success, code, result = weaschem.parse_id_map(content)
+
+		assert.are.same(false, success)
+		assert.are.same("ID_MAP_NEGATIVE_NODE_ID", code)
+		assert.are.same("string", type(result))
+	end)
+	it("should not parse an id map type full with invalid node id -2", function()
+		local content = '{"0": "default:stone","15":"default:dirt_with_grass","-2": "somemod:blah"}'
+		local success, code, result = weaschem.parse_id_map(content)
+
+		assert.are.same(false, success)
+		assert.are.same("ID_MAP_NEGATIVE_NODE_ID", code)
+		assert.are.same("string", type(result))
+	end)
+	it("should not parse an id map type full with invalid node id -99", function()
+		local content = '{"0": "default:stone","15":"default:dirt_with_grass","-99": "somemod:blah"}'
+		local success, code, result = weaschem.parse_id_map(content)
+
+		assert.are.same(false, success)
+		assert.are.same("ID_MAP_NEGATIVE_NODE_ID", code)
+		assert.are.same("string", type(result))
+	end)
+	it("should not parse an id map with floating-point node names", function()
+		local content = '{"0": "default:stone","15.1":"default:dirt_with_grass"}'
+		local success, code, result = weaschem.parse_id_map(content)
+
+		assert.are.same(false, success)
+		assert.are.same("ID_MAP_FLOATING_POINT_NODE_NAME", code)
+		assert.are.same("string", type(result))
+	end)
+	it("should not parse an id map with duplicate node names", function()
+		local content = '{"15": "default:stone","15.0":"foo:dupliate"}'
+		local success, code, result = weaschem.parse_id_map(content)
+
+		assert.are.same(false, success)
+		assert.are.same("ID_MAP_DUPLICATE", code)
+		assert.are.same("string", type(result))
+	end)
+	it("should not parse an id map with a node id that is not a number", function()
+		local content = '{"15": "default:stone","cheeese :D":"foo:dupliate"}'
+		local success, code, result = weaschem.parse_id_map(content)
+
+		assert.are.same(false, success)
+		assert.are.same("ID_MAP_INVALID_ID", code)
+		assert.are.same("string", type(result))
+	end)
+end)
+

worldeditadditions_core/utils/parse/file/weaschem.lua

@@ -115,17 +115,30 @@ end
 
 
 
-function weaschem.parse_id_map(source)
+function weaschem.parse_id_map(source, is_delta)
 	local raw_obj = parse_json(source)
-	if raw_obj == nil then return false, "ID_MAP_INVALID", "The node id map is invalid JSON." end
+	if raw_obj == nil then return false, "ID_MAP_INVALID_JSON", "The node id map is invalid JSON." end
 	
 	local result = {}
 	for id_str, node_name in pairs(raw_obj) do
 		local id = tonumber(id_str)
-		if id == nil then return false, "ID_MAP_INVALID_ID", "A node id in the node id map is not parsable as a number." end
-		if string.find(node_name, ":") == nil then return false, "ID_MAP_RELATIVE_NODE_NAME", "A node name does not contain a colon, suggesting it is a relative node id. Relative node ids are not supported." end
+		if id == nil then
+			return false, "ID_MAP_INVALID_ID", "A node id in the node id map is not parsable as a number."
+		end
+		if string.find(node_name, ":") == nil then
+			return false, "ID_MAP_RELATIVE_NODE_NAME", "A node name does not contain a colon, suggesting it is a relative node id. Relative node ids are not supported."
+		end
+		if id - math.floor(id) > 0.0000001 then
+			return false, "ID_MAP_FLOATING_POINT_NODE_NAME", "Error: All node ids in the node id map must be integers."
+		end
+		if id < 0 then
+			return false, "ID_MAP_NEGATIVE_NODE_ID", "Error: All node ids in the node id map must be integers greater than or equal to 0."
+		end
+		
+		if result[id] ~= nil then
+			return false, "ID_MAP_DUPLICATE", "Multiple node ids in the node id map parse to the same number."
+		end
 		
-		if result[id] ~= nil then return false, "ID_MAP_DUPLICATE", "Multiple node ids in the node id map parse to the same number." end
 		result[id] = node_name
 	end