forked from sashin/sashinexists
47 lines
1.3 KiB
JavaScript
47 lines
1.3 KiB
JavaScript
import assert from "node:assert";
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import { describe, test } from "node:test";
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import FunctionTree from "../../src/drivers/FunctionTree.js";
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describe("FunctionTree", async () => {
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test("can get the keys of the tree", async () => {
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const fixture = createFixture();
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assert.deepEqual(Array.from(await fixture.keys()), [
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"Alice.md",
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"Bob.md",
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"Carol.md",
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]);
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});
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test("can get the value for a key", async () => {
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const fixture = createFixture();
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const alice = await fixture.get("Alice.md");
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assert.equal(alice, "Hello, **Alice**.");
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});
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test("getting a value from function with multiple arguments curries the function", async () => {
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const fixture = new FunctionTree((a, b, c) => a + b + c);
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const fnA = await fixture.get(1);
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const fnAB = await fnA.get(2);
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const result = await fnAB.get(3);
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assert.equal(result, 6);
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});
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test("getting an unsupported key returns undefined", async () => {
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const fixture = createFixture();
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assert.equal(await fixture.get("xyz"), undefined);
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});
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});
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function createFixture() {
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return new FunctionTree(
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(key) => {
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if (key?.endsWith?.(".md")) {
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const name = key.slice(0, -3);
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return `Hello, **${name}**.`;
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}
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return undefined;
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},
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["Alice.md", "Bob.md", "Carol.md"]
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);
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}
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