test: add tests for dasel, pandoc and vtracer

tests/converters/vtracer.test.ts

@@ -0,0 +1,58 @@
+import { beforeEach, expect, test, describe } from "bun:test";
+import { convert } from "../../src/converters/vtracer";
+import type { ExecFileFn } from "../../src/converters/types";
+
+describe("convert", () => {
+  let mockExecFile: ExecFileFn;
+
+  beforeEach(() => {
+    mockExecFile = (cmd, args, callback) => callback(null, "output-data", "");
+  });
+
+  test("should call vtracer with correct arguments (minimal)", async () => {
+    let calledArgs: Parameters<ExecFileFn> = ["", [], () => {}];
+    mockExecFile = (cmd, args, callback) => {
+      calledArgs = [cmd, args, callback];
+      callback(null, "output-data", "");
+    };
+
+    const result = await convert("input.png", "png", "svg", "output.svg", undefined, mockExecFile);
+
+    expect(calledArgs[0]).toBe("vtracer");
+    expect(calledArgs[1]).toEqual(["--input", "input.png", "--output", "output.svg"]);
+    expect(result).toBe("Done");
+  });
+
+  test("should add options as arguments", async () => {
+    let calledArgs: Parameters<ExecFileFn> = ["", [], () => {}];
+    mockExecFile = (cmd, args, callback) => {
+      calledArgs = [cmd, args, callback];
+      callback(null, "output-data", "");
+    };
+
+    const options = {
+      colormode: "color",
+      hierarchical: "true",
+      filter_speckle: 5,
+      path_precision: 0.8,
+    };
+
+    await convert("input.png", "png", "svg", "output.svg", options, mockExecFile);
+
+    expect(calledArgs[1]).toContain("--colormode");
+    expect(calledArgs[1]).toContain("color");
+    expect(calledArgs[1]).toContain("--hierarchical");
+    expect(calledArgs[1]).toContain("true");
+    expect(calledArgs[1]).toContain("--filter_speckle");
+    expect(calledArgs[1]).toContain("5");
+    expect(calledArgs[1]).toContain("--path_precision");
+    expect(calledArgs[1]).toContain("0.8");
+  });
+
+  test("should reject if execFile returns an error", async () => {
+    mockExecFile = (cmd, args, callback) => callback(new Error("fail"), "", "stderr output");
+    expect(
+      convert("input.png", "png", "svg", "output.svg", undefined, mockExecFile),
+    ).rejects.toMatch(/error: Error: fail\nstderr: stderr output/);
+  });
+});