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node_modules/@weborigami/language/test/runtime/handlers.test.js

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+import { ObjectTree } from "@weborigami/async-tree";
+import assert from "node:assert";
+import { describe, test } from "node:test";
+import { handleExtension } from "../../src/runtime/handlers.js";
+
+describe("handlers", () => {
+  test("attaches an unpack method to a value with an extension", async () => {
+    const fixture = createFixture();
+    const numberValue = await fixture.get("foo");
+    assert(typeof numberValue === "number");
+    assert.equal(numberValue, 1);
+    const jsonFile = await fixture.get("bar.json");
+    const withHandler = await handleExtension(fixture, jsonFile, "bar.json");
+    assert.equal(String(withHandler), `{ "bar": 2 }`);
+    const data = await withHandler.unpack();
+    assert.deepEqual(data, { bar: 2 });
+  });
+
+  test("immediately unpacks if key ends in slash", async () => {
+    const fixture = createFixture();
+    const jsonFile = await fixture.get("bar.json");
+    const data = await handleExtension(fixture, jsonFile, "bar.json/");
+    assert.deepEqual(data, { bar: 2 });
+  });
+});
+
+function createFixture() {
+  const parent = new ObjectTree({
+    "json.handler": {
+      unpack: (buffer) => JSON.parse(String(buffer)),
+    },
+  });
+  let tree = new ObjectTree({
+    foo: 1, // No extension, should be left alone
+    "bar.json": `{ "bar": 2 }`,
+  });
+  tree.parent = parent;
+  return tree;
+}