File

spec/util_iterators_spec.lua @ 11026:a086825ed73a

util.dataforms: Convert media element sizes to avoid error on Lua 5.3 The stanza API does not accept number values and threw an error due to the height and width attributes of the media element (XEP-0221). This part had no test coverage previously, explaining why it was not discovered until now.
author Kim Alvefur <zash@zash.se>
date Sun, 16 Aug 2020 12:55:55 +0200
parent 9328:a9592107021b
child 12744:e894677359e5
line wrap: on
line source

local iter = require "util.iterators";

describe("util.iterators", function ()
	describe("join", function ()
		it("should produce a joined iterator", function ()
			local expect = { "a", "b", "c", 1, 2, 3 };
			local output = {};
			for x in iter.join(iter.values({"a", "b", "c"})):append(iter.values({1, 2, 3})) do
				table.insert(output, x);
			end
			assert.same(output, expect);
		end);
	end);

	describe("sorted_pairs", function ()
		it("should produce sorted pairs", function ()
			local orig = { b = 1, c = 2, a = "foo", d = false };
			local n, last_key = 0, nil;
			for k, v in iter.sorted_pairs(orig) do
				n = n + 1;
				if last_key then
					assert(k > last_key, "Expected "..k.." > "..last_key)
				end
				assert.equal(orig[k], v);
				last_key = k;
			end
			assert.equal("d", last_key);
			assert.equal(4, n);
		end);

		it("should allow a custom sort function", function ()
			local orig = { b = 1, c = 2, a = "foo", d = false };
			local n, last_key = 0, nil;
			for k, v in iter.sorted_pairs(orig, function (a, b) return a > b end) do
				n = n + 1;
				if last_key then
					assert(k < last_key, "Expected "..k.." > "..last_key)
				end
				assert.equal(orig[k], v);
				last_key = k;
			end
			assert.equal("a", last_key);
			assert.equal(4, n);
		end);
	end);
end);