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Diffstat (limited to 'spec/util_array_spec.lua')
| -rw-r--r-- | spec/util_array_spec.lua | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/spec/util_array_spec.lua b/spec/util_array_spec.lua new file mode 100644 index 00000000..ff049d0e --- /dev/null +++ b/spec/util_array_spec.lua @@ -0,0 +1,174 @@ +local array = require "util.array"; +describe("util.array", function () + describe("creation", function () + describe("from table", function () + it("works", function () + local a = array({"a", "b", "c"}); + assert.same({"a", "b", "c"}, a); + end); + end); + + describe("from iterator", function () + it("works", function () + -- collects the first value, ie the keys + local a = array(ipairs({true, true, true})); + assert.same({1, 2, 3}, a); + end); + end); + + describe("collect", function () + it("works", function () + -- collects the first value, ie the keys + local a = array.collect(ipairs({true, true, true})); + assert.same({1, 2, 3}, a); + end); + end); + + end); + + describe("metatable", function () + describe("operator", function () + describe("addition", function () + it("works", function () + local a = array({ "a", "b" }); + local b = array({ "c", "d" }); + assert.same({"a", "b", "c", "d"}, a + b); + end); + end); + + describe("equality", function () + it("works", function () + local a1 = array({ "a", "b" }); + local a2 = array({ "a", "b" }); + local b = array({ "c", "d" }); + assert.truthy(a1 == a2); + assert.falsy(a1 == b); + assert.falsy(a1 == { "a", "b" }, "Behavior of metatables changed in Lua 5.3"); + end); + end); + + describe("division", function () + it("works", function () + local a = array({ "a", "b", "c" }); + local b = a / function (i) if i ~= "b" then return i .. "x" end end; + assert.same({ "ax", "cx" }, b); + end); + end); + + end); + end); + + describe("methods", function () + describe("map", function () + it("works", function () + local a = array({ "a", "b", "c" }); + local b = a:map(string.upper); + assert.same({ "A", "B", "C" }, b); + end); + end); + + describe("filter", function () + it("works", function () + local a = array({ "a", "b", "c" }); + a:filter(function (i) return i ~= "b" end); + assert.same({ "a", "c" }, a); + end); + end); + + describe("sort", function () + it("works", function () + local a = array({ 5, 4, 3, 1, 2, }); + a:sort(); + assert.same({ 1, 2, 3, 4, 5, }, a); + end); + end); + + describe("unique", function () + it("works", function () + local a = array({ "a", "b", "c", "c", "a", "b" }); + a:unique(); + assert.same({ "a", "b", "c" }, a); + end); + end); + + describe("pluck", function () + it("works", function () + local a = array({ { a = 1, b = -1 }, { a = 2, b = -2 }, }); + a:pluck("a"); + assert.same({ 1, 2 }, a); + end); + end); + + + describe("reverse", function () + it("works", function () + local a = array({ "a", "b", "c" }); + a:reverse(); + assert.same({ "c", "b", "a" }, a); + end); + end); + + -- TODO :shuffle + + describe("append", function () + it("works", function () + local a = array({ "a", "b", "c" }); + a:append(array({ "d", "e", })); + assert.same({ "a", "b", "c", "d", "e" }, a); + end); + end); + + describe("push", function () + it("works", function () + local a = array({ "a", "b", "c" }); + a:push("d"):push("e"); + assert.same({ "a", "b", "c", "d", "e" }, a); + end); + end); + + describe("pop", function () + it("works", function () + local a = array({ "a", "b", "c" }); + assert.equal("c", a:pop()); + assert.same({ "a", "b", }, a); + end); + end); + + describe("concat", function () + it("works", function () + local a = array({ "a", "b", "c" }); + assert.equal("a,b,c", a:concat(",")); + end); + end); + + describe("length", function () + it("works", function () + local a = array({ "a", "b", "c" }); + assert.equal(3, a:length()); + end); + end); + + describe("slice", function () + it("works", function () + local a = array({ "a", "b", "c" }); + assert.equal(array.slice(a, 1, 2), array{ "a", "b" }); + assert.equal(array.slice(a, 1, 3), array{ "a", "b", "c" }); + assert.equal(array.slice(a, 2, 3), array{ "b", "c" }); + assert.equal(array.slice(a, 2), array{ "b", "c" }); + assert.equal(array.slice(a, -4), array{ "a", "b", "c" }); + assert.equal(array.slice(a, -3), array{ "a", "b", "c" }); + assert.equal(array.slice(a, -2), array{ "b", "c" }); + assert.equal(array.slice(a, -1), array{ "c" }); + end); + + it("can mutate", function () + local a = array({ "a", "b", "c" }); + assert.equal(a:slice(-1), array{"c"}); + assert.equal(a, array{"c"}); + end); + end); + end); + + -- TODO The various array.foo(array ina, array outa) functions +end); + |