File

spec/util_argparse_spec.lua @ 12475:553c6204fe5b 0.12

util.argparse: Return final 'arg' table with positional arguments for convenience This is the same as the input table (which is mutated during processing), but if that table was created on the fly, such as by packing `...` it's convenient if it also gets returned from the parse function.
author Matthew Wild <mwild1@gmail.com>
date Mon, 25 Apr 2022 15:09:41 +0100
parent 11845:97c1399720c2
child 12477:cc84682b8429
line wrap: on
line source

describe("parse", function()
	local parse
	setup(function() parse = require"util.argparse".parse; end);

	it("works", function()
		-- basic smoke test
		local opts = parse({ "--help" });
		assert.same({ help = true }, opts);
	end);

	it("returns if no args", function() assert.same({}, parse({})); end);

	it("supports boolean flags", function()
		local opts, err = parse({ "--foo"; "--no-bar" });
		assert.falsy(err);
		assert.same({ foo = true; bar = false }, opts);
	end);

	it("consumes input until the first argument", function()
		local arg = { "--foo"; "bar"; "--baz" };
		local opts, err = parse(arg);
		assert.falsy(err);
		assert.same({ foo = true }, opts);
		assert.same({ "bar"; "--baz" }, arg);
	end);

	it("expands short options", function()
		local opts, err = parse({ "--foo"; "-b" }, { short_params = { b = "bar" } });
		assert.falsy(err);
		assert.same({ foo = true; bar = true }, opts);
	end);

	it("supports value arguments", function()
		local opts, err = parse({ "--foo"; "bar"; "--baz=moo" }, { value_params = { foo = true; bar = true } });
		assert.falsy(err);
		assert.same({ foo = "bar"; baz = "moo" }, opts);
	end);

	it("demands values for value params", function()
		local opts, err, where = parse({ "--foo" }, { value_params = { foo = true } });
		assert.falsy(opts);
		assert.equal("missing-value", err);
		assert.equal("--foo", where);
	end);

	it("reports where the problem is", function()
		local opts, err, where = parse({ "-h" });
		assert.falsy(opts);
		assert.equal("param-not-found", err);
		assert.equal("-h", where, "returned where");
	end);

end);