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-rw-r--r--tests/js/utils.mjs474
1 files changed, 0 insertions, 474 deletions
diff --git a/tests/js/utils.mjs b/tests/js/utils.mjs
deleted file mode 100644
index 69fd54a..0000000
--- a/tests/js/utils.mjs
+++ /dev/null
@@ -1,474 +0,0 @@
-import assert from "node:assert/strict";
-
-import * as runner from "../runner.mjs";
-import {
- keys,
- difference,
- assocIn,
- dissoc,
- getIn,
- findFirst,
- partial,
- strSortFn,
- undefinedAsNull,
- first,
- rest,
- butlast,
- last,
- take,
- range,
-} from "../../src/utils.mjs";
-
-
-const test_keys = async t => {
- t.start("keys()");
- await t.test("happy paths", () => {
- assert.deepEqual(
- { a: 1, b: 2 },
- keys(["a", "b"], { a: 1, b: 2, c: 3 }),
- );
- });
-
- await t.test("stress scenarios", () => {
- assert.deepEqual(
- {},
- keys([], {}),
- "empty selection of empty object",
- );
-
- assert.deepEqual(
- {},
- keys([], {a: 1}),
- "empty selection of non-empty object",
- );
-
- assert.deepEqual(
- {},
- keys(["a"], {}),
- "non-empty selection of empty object",
- );
-
- assert.deepEqual(
- { a: undefined, b: null },
- keys(["a", "b", "c"], { a: undefined, b: null }),
- "falsy values",
- );
- });
-};
-
-const test_difference = async t => {
- t.start("difference()");
-
- await t.test("empty values", () => {
- assert.deepEqual(
- difference(new Set(), new Set()),
- new Set(),
- );
-
- assert.deepEqual(
- difference(new Set(), new Set([1, 2])),
- new Set(),
- );
-
- assert.deepEqual(
- difference(new Set([1, 2]), new Set()),
- new Set([1, 2]),
- );
- });
-
- await t.test("different subsets", () => {
- assert.deepEqual(
- difference(new Set([1, 2]), new Set([3, 4])),
- new Set([1, 2]),
- );
-
- assert.deepEqual(
- difference(new Set([1, 2, 3]), new Set([2, 4, 5])),
- new Set([1, 3]),
- );
-
- assert.deepEqual(
- difference(new Set([1]), new Set([1, 2, 3, 4, 5])),
- new Set(),
- );
-
- assert.deepEqual(
- difference(new Set([1, 2, 3]), new Set([1, 2, 3])),
- new Set(),
- );
- });
-};
-
-const test_assocIn = async t => {
- t.start("assocIn()");
-
- await t.test("empty values", () => {
- assert.deepEqual(assocIn({}, [], null), {});
- assert.deepEqual(assocIn({ k: "v" }, [], null), { k: "v" });
- });
-
- await t.test("adding values", () => {
- assert.deepEqual(assocIn({}, ["k"], "v"), { k: "v" });
- assert.deepEqual(assocIn({}, ["k1", "k2"], "v"), { k1: { k2: "v" }});
- assert.deepEqual(assocIn({}, ["k1", "k2", "k3"], "v"), { k1: { k2: { k3: "v" }}});
- assert.deepEqual(assocIn({ k: "v" }, ["k1", "k2"], "v"), { k: "v", k1: { k2: "v" }});
- });
-
- await t.test("replacing values", () => {
- assert.deepEqual(
- assocIn(
- { k1: { k2: { k3: "before" }}},
- ["k1", "k2", "k3"],
- "after"
- ),
- { k1: { k2: { k3: "after" }}}
- );
- });
-};
-
-const test_dissoc = async t => {
- t.start("dissoc()");
-
- await t.test("empty values", () => {
- assert.deepEqual(dissoc({}, "k"), {});
- });
-
- await t.test("noop when key does not exist", () => {
- assert.deepEqual(dissoc({ a: 1 }, "b"), { a: 1 });
- });
-
- await t.test("removes the key", () => {
- assert.deepEqual(dissoc({ a: 1, b: 2}, "b"), { a: 1 });
- });
-};
-
-const test_getIn = async t => {
- t.start("getIn()");
-
- await t.test("empty values", () => {
- assert.deepEqual(getIn({}, []), {});
- assert.deepEqual(getIn({ k: "v" }, []), { k: "v" });
- });
-
- await t.test("missing values", () => {
- assert.deepEqual(getIn({}, ["a", "b", "c"]), undefined);
- assert.deepEqual(getIn({ a: {}}, ["a", "b", "c"]), undefined);
- assert.deepEqual(getIn({ a: { b: {}}}, ["a", "b", "c"]), undefined);
- assert.deepEqual(getIn({ a: { b: {}, c: {}}}, ["a", "b", "c"]), undefined);
- });
-
- await t.test("nested valeues", () => {
- assert.deepEqual(getIn({ a: { b: { c: { d: "e" }}}}, ["a", "b", "c", "d"]), "e");
- });
-};
-
-const test_findFirst = async t => {
- t.start("findFirst()");
-
- await t.test("empty values", () => {
- assert.equal(findFirst([], () => {}), null);
- });
-
- await t.test("when function doesn't transform, it behaves similarly to [].find()", () => {
- const arr1 = [ 0, null, undefined, "", 1, 2 ];
- assert.equal(findFirst(arr1, x => x), 1);
- assert.equal(arr1.find(x => x), 1);
-
- const arr2 = [ 0, null, undefined, "", false ];
- assert.equal(findFirst(arr2, x => x), null);
- assert.equal(arr2.find(x => x), undefined);
- });
-
- await t.test("when it does transform, we return the transformed value", () => {
- const arr = [ 1, 3, 5, 6 ];
-
- assert.equal(
- findFirst(arr, x => x % 2 === 0 && "a brand new value"),
- "a brand new value",
- );
- });
-};
-
-const test_partial = async t => {
- t.start("partial()");
-
- await t.test("empty values", () => {
- const adder = (a, b, c) => a + b + c;
-
- const adder1 = partial(adder);
- assert.equal(adder1(1, 2, 3), 6);
-
- const adder2 = partial(adder, 4, 5, 6);
- assert.equal(adder2(), 15);
-
- const noargs = () => "static";
- assert.equal(partial(noargs)(), noargs());
- });
-
- await t.test("too few arguments", () => {
- const threeArgs = (a, b, c) => {
- assert.notEqual(c, undefined);
- return a + b + c
- };
-
- const add1 = partial(threeArgs, 1);
- assert.throws(
- () => add1(2),
- assert.AssertionError,
- );
-
- const add1And2 = partial(threeArgs, 1, 2);
- assert.throws(
- () => add1And2(),
- assert.AssertionError,
- );
-
- const addNothing = partial(threeArgs);
- assert.throws(
- () => addNothing(),
- assert.AssertionError,
- );
- });
-
- await t.test("too many arguments", () => {
- const twoArgs = (a, b) => a + b;
-
- assert.equal(partial(twoArgs, 1)(2, 3), 3);
- assert.equal(partial(twoArgs, 1, 2)(3), 3);
- });
-
- await t.test("daily usage", () => {
- const twoArg = (a, b) => a + b;
-
- const numbers = [ 1, 2, 3, 4, 5 ];
- assert.deepEqual(
- numbers.map(partial(twoArg, 2)),
- [ 3, 4, 5, 6, 7 ],
- );
- });
-
- await t.test("nested partials", () => {
- const threeArgs = (a, b, c) => a + b + c;
-
- const add1 = partial(threeArgs, 1);
- const add1And2 = partial(add1, 2);
-
- assert.equal(add1And2(3), 6);
- });
-};
-
-const test_strSortFn = async t => {
- t.start("strSortFn()");
-
- await t.test("empty value", () => {
- assert.equal(strSortFn("", ""), 0);
- });
-
- await t.test("default sort", () => {
- const arr = [ "a", "Z" ];
- assert.deepEqual(
- [...arr].sort(strSortFn),
- [...arr].sort().reverse(),
- );
- });
-};
-
-const test_undefinedAsNull = async t => {
- t.start("undefinedAsNull()");
-
- await t.test("null for undefined or null", () => {
- assert.equal(undefinedAsNull(undefined), null);
- assert.equal(undefinedAsNull(null), null);
- });
-
- await t.test("identity otherwise", () => {
- const expected = [
- " ", "", 0, 1, -1.1, true, false,
- [], [ "" ], {}, { k: "v" },
- ];
- const given = expected.map(undefinedAsNull);
- assert.deepEqual(given, expected);
- });
-};
-
-const test_first = async t => {
- t.start("first()");
-
- await t.test("undefined for an empty array", () => {
- assert.equal(undefined, first([]));
- assert.equal(undefined, first(""));
- });
-
- await t.test("the first element otherwise", () => {
- assert.equal(1, first([1, 2, 3]));
- assert.equal("a", first("abc"));
- });
-};
-
-const test_rest = async t => {
- t.start("rest()");
-
- await t.test("an empty array when no more elements are available", () => {
- assert.deepEqual([], rest([]));
- assert.deepEqual([], rest([1]));
- assert.equal("", rest(""));
- assert.equal("bc", rest("abc"));
- });
-
- await t.test("the rest of the collection otherwise", () => {
- assert.deepEqual([2, 3], rest([1, 2, 3]));
- assert.equal("bc", rest("abc"));
- });
-
- await t.test("combines with first() well", () => {
- const arr = ["anything", "can", "go", "here"];
- assert.deepEqual(arr, [ first(arr), ...rest(arr) ]);
- });
-};
-
-const test_butlast = async t => {
- t.start("butlast()");
-
- await t.test("empty array when ther are no more elements", () => {
- assert.deepEqual([], butlast([]));
- assert.deepEqual([], butlast([1]));
- assert.equal("", butlast(""));
- assert.equal("", butlast("c"));
- });
-
- await t.test("the beginning of the array otherwise", () => {
- assert.deepEqual([1, 2], butlast([1, 2, 3]));
- assert.equal("ab", butlast("abc"));
- });
-};
-
-const test_last = async t => {
- t.start("last()");
-
- await t.test("undefined for an empty array", () => {
- assert.equal(undefined, last([]));
- assert.equal(undefined, last(""));
- });
-
- await t.test("the last element otherwise", () => {
- assert.equal(3, last([1, 2, 3]));
- assert.equal("c", last("abc"));
- });
-
- await t.test("combines with butlast() well", () => {
- const arr = ["anything", "goes", "here", "too"];
- assert.deepEqual(arr, [ ...butlast(arr), last(arr) ]);
- });
-};
-
-const test_take = async t => {
- t.start("take()");
-
- await t.test("example usage", () => {
- assert.deepEqual(Array.from(take(3, [1, 2, 3, 4, 5, 6])), [1, 2, 3]);
- assert.deepEqual([...take(3, [1, 2, 3, 4, 5, 6])], [1, 2, 3]);
-
- const gen = function*() {
- yield* [1, 2, 3, 4, 5, 6];
- }
- assert.deepEqual([...take(3, gen())], [1, 2, 3]);
-
- assert.deepEqual([...take(3, [1, 2])], [1, 2]);
-
- assert.deepEqual([...take(1, [])], []);
- assert.deepEqual([...take(0, [1])], []);
- assert.deepEqual([...take(-1, [1])], []);
- });
-};
-
-const test_range = async t => {
- t.start("range()");
-
- await t.test("empty values", () => {
- const [] = range();
-
- const [ a ] = range();
- assert.equal(a, 0n);
-
- const [ b, c, d, e ] = range();
- assert.deepEqual(
- [ b, c, d, e ],
- [ 0n, 1n, 2n, 3n ],
- );
-
- assert.deepEqual(
- Array.from(take(5, range())),
- [ 0n, 1n, 2n, 3n, 4n ],
- );
-
- assert.deepEqual(
- Array.from(take(1, range())),
- [ 0n ],
- );
-
- assert.deepEqual(
- Array.from(take(0, range())),
- [],
- );
- });
-
- await t.test("example usage", () => {
- assert.deepEqual(
- [...range(-5, 5)],
- [ -5n, -4n, -3n, -2n, -1n, 0n, 1n, 2n, 3n, 4n ],
- );
- assert.deepEqual(
- [...range(-100, 100, 10)],
- [
- -100n, -90n, -80n, -70n, -60n, -50n, -40n, -30n,
- -20n, -10n, 0n, 10n, 20n, 30n, 40n, 50n, 60n,
- 70n, 80n, 90n,
- ],
- );
-
- assert.deepEqual([...range(0, 4, 2)], [0n, 2n]);
- assert.deepEqual([...range(0, 5, 2)], [0n, 2n, 4n]);
- assert.deepEqual([...range(0, 6, 2)], [0n, 2n, 4n]);
- assert.deepEqual([...range(0, 7, 2)], [0n, 2n, 4n, 6n]);
-
- assert.deepEqual(
- [...range(100, 0, -10)],
- [ 100n, 90n, 80n, 70n, 60n, 50n, 40n, 30n, 20n, 10n ]
- );
- assert.deepEqual(
- [...range(10, -10, -1)],
- [
- 10n, 9n, 8n, 7n, 6n, 5n, 4n, 3n, 2n, 1n, 0n,
- -1n, -2n, -3n, -4n, -5n, -6n, -7n, -8n, -9n,
- ],
- );
-
- assert.deepEqual(
- [...take(3, range(1, 10, 0))],
- [ 1n, 1n, 1n ],
- );
- assert.deepEqual(
- [...take(3, range(10, 1, 0))],
- [ 10n, 10n, 10n ],
- );
- });
-};
-
-
-await runner.runTests([
- test_keys,
- test_difference,
- test_assocIn,
- test_dissoc,
- test_getIn,
- test_findFirst,
- test_partial,
- test_strSortFn,
- test_undefinedAsNull,
- test_first,
- test_rest,
- test_butlast,
- test_last,
- test_take,
- test_range,
-]);
generated by cgit v1.2.3 (git 2.49.0) at 2025-07-21 18:34:24 +0000