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find-lua-requires.spec.ts
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159 lines (138 loc) · 5.35 KB
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import { findLuaRequires, LuaRequire } from "../../src/transpilation/find-lua-requires";
test("empty string", () => {
expect(findLuaRequires("")).toEqual([]);
});
test("can find requires", () => {
const lua = `
require("req1")
require('req2')
local r3 = require("req3")
`;
expect(requirePaths(findLuaRequires(lua))).toEqual(["req1", "req2", "req3"]);
});
test("handles requires with spacing", () => {
const lua = 'require \t ( \t "req" )';
expect(requirePaths(findLuaRequires(lua))).toEqual(["req"]);
});
test("handles requires without parentheses", () => {
const lua = 'require "req"';
expect(requirePaths(findLuaRequires(lua))).toEqual(["req"]);
});
test("has correct offsets", () => {
const lua = `
require("req1")
require('req2')
local r3 = require("req3")
`;
const requires = findLuaRequires(lua);
expect(requires).toHaveLength(3);
expect(lua.substring(requires[0].from, requires[0].to + 1)).toBe('require("req1")');
expect(lua.substring(requires[1].from, requires[1].to + 1)).toBe("require('req2')");
expect(lua.substring(requires[2].from, requires[2].to + 1)).toBe('require("req3")');
});
test("has correct offsets for offsets without parentheses", () => {
const lua = `
require"req1"
require 'req2'
local r3 = require"req3"
`;
const requires = findLuaRequires(lua);
expect(requires).toHaveLength(3);
expect(lua.substring(requires[0].from, requires[0].to + 1)).toBe('require"req1"');
expect(lua.substring(requires[1].from, requires[1].to + 1)).toBe("require 'req2'");
expect(lua.substring(requires[2].from, requires[2].to + 1)).toBe('require"req3"');
});
test("ignores requires that should not be included", () => {
const lua = `
require("req1")
local a = "require('This should not be included')"
require('req2')
local b = 'require("This should not be included")'
require("req3")
-- require("this should not be included")
require("req4")
--[[ require("this should not be included") ]]
require("req5")
`;
expect(requirePaths(findLuaRequires(lua))).toEqual(["req1", "req2", "req3", "req4", "req5"]);
});
test("non-terminated require", () => {
expect(findLuaRequires("require('abc")).toEqual([]);
});
describe.each(['"', "'"])("strings with delimiter %p", delimiter => {
test("escaped delimiter", () => {
const lua = `
require(${delimiter}req1${delimiter});
local a = ${delimiter}require(excludeThis\\${delimiter})${delimiter}
require(${delimiter}req\\${delimiter}2${delimiter});
`;
expect(requirePaths(findLuaRequires(lua))).toEqual(["req1", `req${delimiter}2`]);
});
test("multiple escaped delimiters", () => {
const lua = `
require(${delimiter}r\\${delimiter}e.- q%\\${delimiter}1${delimiter})
`;
expect(requirePaths(findLuaRequires(lua))).toEqual([`r${delimiter}e.- q%${delimiter}1`]);
});
test("handles other escaped characters", () => {
expect(requirePaths(findLuaRequires(`require(${delimiter}req\\n\\\\${delimiter})`))).toEqual(["req\\n\\\\"]);
});
test("handles non-delimiter quote", () => {
const oppositeDelimiter = delimiter === "'" ? '"' : "'";
const lua = `
require(${delimiter}req1${delimiter});
local a = ${delimiter}require(excludeThis${oppositeDelimiter})${delimiter};
require(${delimiter}req2${oppositeDelimiter}${delimiter});
`;
expect(requirePaths(findLuaRequires(lua))).toEqual(["req1", `req2${oppositeDelimiter}`]);
});
test("non-terminated string", () => {
const lua = `
require(${delimiter}myRequire${delimiter});
local a = ${delimiter}require("excludeThis")
`;
expect(requirePaths(findLuaRequires(lua))).toEqual(["myRequire"]);
});
});
describe("single-line comments", () => {
test("comment at end of file", () => {
expect(findLuaRequires("--")).toEqual([]);
});
test("require before and after comment", () => {
const lua = `
require("req1")-- comment\nrequire("req2")
`;
expect(requirePaths(findLuaRequires(lua))).toEqual(["req1", "req2"]);
});
test("require before and after empty comment", () => {
const lua = `
require("req1")--\nrequire("req2")
`;
expect(requirePaths(findLuaRequires(lua))).toEqual(["req1", "req2"]);
});
});
describe("multi-line comments", () => {
test("comment at end of file", () => {
expect(findLuaRequires("--[[]]")).toEqual([]);
});
test("unterminated comment", () => {
expect(findLuaRequires("--[[")).toEqual([]);
});
test("require before and after comment", () => {
const lua = `
require("req1")--[[
ml comment require("this should be excluded")
]]require("req2")
`;
expect(requirePaths(findLuaRequires(lua))).toEqual(["req1", "req2"]);
});
test("require before and after empty comment", () => {
const lua = `
require("req1")--[[]]require("req2")
`;
expect(requirePaths(findLuaRequires(lua))).toEqual(["req1", "req2"]);
});
});
function requirePaths(matches: LuaRequire[]): string[] {
return matches.map(m => m.requirePath);
}