Introduce `Bun.FileSystemRouter` API

1 files changed, 85 insertions, 0 deletions

diff --git a/test/bun.js/filesystem_router.test.ts b/test/bun.js/filesystem_router.test.ts
new file mode 100644
index 000000000..c375cbb22
--- /dev/null
+++ b/test/bun.js/filesystem_router.test.ts
@@ -0,0 +1,85 @@
+import { FileSystemRouter } from "bun";
+import { it, expect } from "bun:test";
+import path, { dirname, resolve } from "path";
+import fs, { realpathSync, rmSync } from "fs";
+import { tmpdir } from "os";
+
+function createTree(basedir, paths) {
+  for (const end of paths) {
+    const abs = path.join(basedir, end);
+    try {
+      const dir = dirname(abs);
+      if (dir.length > 0 && dir !== "/") fs.mkdirSync(dir, { recursive: true });
+    } catch (e) {}
+    fs.writeFileSync(abs, "export default " + JSON.stringify(end) + ";\n");
+  }
+}
+
+it("should find files", () => {
+  const tempdir = realpathSync(tmpdir()) + "/";
+
+  rmSync(tempdir + "fs-router-test-01", { recursive: true, force: true });
+
+  createTree(tempdir + "fs-router-test-01", [
+    "a.tsx",
+    "b.tsx",
+    "abc/[id].tsx",
+    "abc/index.tsx",
+    "abc/def/[id].tsx",
+    "abc/def/index.tsx",
+    "abc/def/ghi/[id].tsx",
+    "abc/def/ghi/index.tsx",
+    "abc/def/ghi/jkl/[id].tsx",
+    "abc/def/ghi/jkl/index.tsx",
+    "[id].tsx",
+    "index.tsx",
+    "foo/[id].tsx",
+    "catch-all/[...id].tsx",
+  ]);
+
+  const router = new FileSystemRouter({
+    dir: tempdir + "fs-router-test-01/",
+    fileExtensions: [".tsx"],
+    style: "nextjs",
+  });
+
+  const routes = router.routes;
+  const fixture = {
+    "/": `${tempdir}fs-router-test-01/index.tsx`,
+    "/[id]": `${tempdir}fs-router-test-01/[id].tsx`,
+    "/a": `${tempdir}fs-router-test-01/a.tsx`,
+    "/abc": `${tempdir}fs-router-test-01/abc/index.tsx`,
+    "/abc/[id]": `${tempdir}fs-router-test-01/abc/[id].tsx`,
+    "/abc/def/[id]": `${tempdir}fs-router-test-01/abc/def/[id].tsx`,
+    "/abc/def/ghi": `${tempdir}fs-router-test-01/abc/def/ghi/index.tsx`,
+    "/abc/def/ghi/[id]": `${tempdir}fs-router-test-01/abc/def/ghi/[id].tsx`,
+    "/abc/def/ghi/jkl": `${tempdir}fs-router-test-01/abc/def/ghi/jkl/index.tsx`,
+    "/abc/def/ghi/jkl/[id]": `${tempdir}fs-router-test-01/abc/def/ghi/jkl/[id].tsx`,
+    "/abc/def": `${tempdir}fs-router-test-01/abc/def/index.tsx`,
+    "/b": `${tempdir}fs-router-test-01/b.tsx`,
+    "/foo/[id]": `${tempdir}fs-router-test-01/foo/[id].tsx`,
+    "/catch-all/[...id]": `${tempdir}fs-router-test-01/catch-all/[...id].tsx`,
+  };
+  for (const route in fixture) {
+    if (!(route in routes)) {
+      throw new Error(`Route ${route} not found`);
+    }
+
+    expect(routes[route]).toBe(fixture[route]);
+  }
+
+  expect(Object.keys(routes).length).toBe(Object.keys(fixture).length);
+
+  expect(router.match("/never/gonna/give/you/up")).toBe(null);
+  expect(
+    router.match(
+      "/catch-all/we-are-no-strangers-to-love/you/know/the/rules/and/so/do/i",
+    ).params.id,
+  ).toBe("we-are-no-strangers-to-love/you/know/the/rules/and/so/do/i");
+  expect(router.match("/").name).toBe("/");
+  expect(router.match("/index").name).toBe("/");
+  expect(router.match("/index/").name).toBe("/");
+  expect(router.match("/a").name).toBe("/a");
+  expect(router.match("/b").name).toBe("/b");
+  expect(router.match("/abc/123").params.id).toBe("123");
+});