diff options
Diffstat (limited to 'spec/util_array_spec.lua')
| -rw-r--r-- | spec/util_array_spec.lua | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/spec/util_array_spec.lua b/spec/util_array_spec.lua index 1d9da947..ff049d0e 100644 --- a/spec/util_array_spec.lua +++ b/spec/util_array_spec.lua @@ -148,6 +148,25 @@ describe("util.array", function () 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 |