feat(test-utils): improve createFixture

Author: natemoo-re

.changeset/smooth-bushes-smell.md

@@ -0,0 +1,5 @@
+---
+"@bomb.sh/tools": patch
+---
+
+Adds support for nested object syntax, dynamic file creation, and better fs bindings to createFixture

package.json

@@ -48,6 +48,8 @@
   },
   "dependencies": {
     "@bomb.sh/args": "^0.3.1",
+    "@humanfs/node": "^0.16.7",
+    "@humanfs/types": "^0.15.0",
     "@typescript/native-preview": "7.0.0-dev.20260307.1",
     "knip": "^5.85.0",
     "oxfmt": "^0.36.0",

pnpm-lock.yaml

@@ -1,43 +1,41 @@
 import { describe, it, expect } from "vitest";
 import { existsSync } from "node:fs";
-import { readFile, writeFile } from "node:fs/promises";
 import { createFixture } from "./test-utils.ts";
 
 describe("createFixture", () => {
-	it("creates files on disk from inline tree", async () => {
-		const fixture = await createFixture({
-			"hello.txt": "hello world",
-		});
-		const content = await readFile(fixture.resolve("hello.txt"), "utf8");
-		expect(content).toBe("hello world");
-	});
+  it("creates files on disk from inline tree", async () => {
+    const fixture = await createFixture({
+      "hello.txt": "hello world",
+    });
+    expect(await fixture.text("hello.txt")).toBe("hello world");
+  });
 
-	it("creates nested directories from slash-separated keys", async () => {
-		const fixture = await createFixture({
-			"src/index.ts": "export const x = 1",
-			"src/utils/helpers.ts": "export function help() {}",
-		});
-		expect(existsSync(fixture.resolve("src/index.ts"))).toBe(true);
-		expect(existsSync(fixture.resolve("src/utils/helpers.ts"))).toBe(true);
-	});
+  it("creates nested directories from slash-separated keys", async () => {
+    const fixture = await createFixture({
+      "src/index.ts": "export const x = 1",
+      "src/utils/helpers.ts": "export function help() {}",
+    });
+    expect(await fixture.isFile("src/index.ts")).toBe(true);
+    expect(await fixture.isFile("src/utils/helpers.ts")).toBe(true);
+  });
 
-	it("resolve returns absolute path within fixture root", async () => {
-		const fixture = await createFixture({ "a.txt": "" });
-		expect(fixture.resolve("a.txt").toString()).toContain(fixture.root.toString());
-	});
+  it("resolve returns absolute path within fixture root", async () => {
+    const fixture = await createFixture({ "a.txt": "" });
+    expect(fixture.resolve("a.txt").toString()).toContain(fixture.root.toString());
+  });
 
-	it("readFile reads the actual file", async () => {
-		const fixture = await createFixture({ "a.txt": "Empty" });
-		expect(await fixture.readFile("a.txt")).toEqual("Empty");
-		await writeFile(fixture.resolve("a.txt"), "Hello world!", { encoding: "utf-8" });
-		expect(await fixture.readFile("a.txt")).toEqual("Hello world!");
-	});
+  it("text reads the actual file", async () => {
+    const fixture = await createFixture({ "a.txt": "Empty" });
+    expect(await fixture.text("a.txt")).toEqual("Empty");
+    await fixture.write("a.txt", "Hello world!");
+    expect(await fixture.text("a.txt")).toEqual("Hello world!");
+  });
 
-	it("cleanup removes the temp directory", async () => {
-		const fixture = await createFixture({ "a.txt": "" });
-		const path = fixture.root;
-		expect(existsSync(path)).toBe(true);
-		await fixture.cleanup();
-		expect(existsSync(path)).toBe(false);
-	});
+  it("cleanup removes the temp directory", async () => {
+    const fixture = await createFixture({ "a.txt": "" });
+    const path = fixture.root;
+    expect(fixture.isDirectory(fixture.root)).toBe(true);
+    await fixture.cleanup();
+    expect(existsSync(path)).toBe(false);
+  });
 });