test: add tests for dasel, pandoc and vtracer

Author: Laertes87

tests/converters/dasel.test.ts

@@ -0,0 +1,72 @@
+import fs from "fs";
+import { beforeEach, afterEach, expect, test, describe } from "bun:test";
+import { convert } from "../../src/converters/dasel";
+import type { ExecFileFn } from "../../src/converters/types";
+
+const originalWriteFile = fs.writeFile;
+
+describe("convert", () => {
+  let mockExecFile: ExecFileFn;
+
+  beforeEach(() => {
+    // mock fs.writeFile
+    // @ts-expect-error: property __promisify__ is missing
+    fs.writeFile = (path, data, cb) => cb(null);
+    // mock execFile
+    mockExecFile = (cmd, args, callback) => callback(null, "output-data", "");
+  });
+
+  afterEach(() => {
+    // reset fs.writeFile
+    fs.writeFile = originalWriteFile;
+  });
+
+  test("should call dasel with correct arguments and write output", async () => {
+    let calledArgs: Parameters<ExecFileFn> = ["", [], () => {}];
+    mockExecFile = (cmd, args, callback) => {
+      calledArgs = [cmd, args, callback];
+      callback(null, "output-data", "");
+    };
+
+    let writeFileCalled = false;
+    // @ts-expect-error: property __promisify__ is missing
+    fs.writeFile = (path, data, cb) => {
+      writeFileCalled = true;
+      expect(path).toBe("output.json");
+      expect(data).toBe("output-data");
+      // @ts-expect-error: could not be callable with null
+      cb(null);
+    };
+
+    const result = await convert(
+      "input.yaml",
+      "yaml",
+      "json",
+      "output.json",
+      undefined,
+      mockExecFile,
+    );
+
+    expect(calledArgs[0]).toBe("dasel");
+    expect(calledArgs[1]).toEqual(["--file", "input.yaml", "--read", "yaml", "--write", "json"]);
+    expect(writeFileCalled).toBe(true);
+    expect(result).toBe("Done");
+  });
+
+  test("should reject if execFile returns an error", async () => {
+    mockExecFile = (cmd, args, callback) => callback(new Error("fail"), "", "");
+    expect(
+      convert("input.yaml", "yaml", "json", "output.json", undefined, mockExecFile),
+    ).rejects.toMatch(/error: Error: fail/);
+  });
+
+  test("should reject if writeFile fails", async () => {
+    // @ts-expect-error: property __promisify__ is missing
+    fs.writeFile = (path, data, cb) => cb(new Error("write fail"));
+    expect(
+      convert("input.yaml", "yaml", "json", "output.json", undefined, (cmd, args, cb) =>
+        cb(null, "output-data", ""),
+      ),
+    ).rejects.toMatch(/Failed to write output/);
+  });
+});

tests/converters/libreoffice.test.ts

@@ -1,6 +1,6 @@
 import { afterEach, beforeEach, expect, test } from "bun:test";
-import { convert } from "../../src/converters/libreoffice"; // ← adjust
-import type { ExecFileFn } from "../../src/converters/types"; // ← adjust
+import { convert } from "../../src/converters/libreoffice";
+import type { ExecFileFn } from "../../src/converters/types";
 
 function requireDefined<T>(value: T, msg: string): NonNullable<T> {
   if (value === undefined || value === null) throw new Error(msg);

tests/converters/pandoc.test.ts

@@ -0,0 +1,66 @@
+import { beforeEach, expect, test, describe } from "bun:test";
+import { convert } from "../../src/converters/pandoc";
+import type { ExecFileFn } from "../../src/converters/types";
+
+describe("convert", () => {
+  let mockExecFile: ExecFileFn;
+
+  beforeEach(() => {
+    mockExecFile = (cmd, args, callback) => callback(null, "output-data", "");
+  });
+
+  test("should call pandoc with correct arguments (normal)", async () => {
+    let calledArgs: Parameters<ExecFileFn> = ["", [], () => {}];
+    mockExecFile = (cmd, args, callback) => {
+      calledArgs = [cmd, args, callback];
+      callback(null, "output-data", "");
+    };
+
+    const result = await convert(
+      "input.md",
+      "markdown",
+      "html",
+      "output.html",
+      undefined,
+      mockExecFile,
+    );
+
+    expect(calledArgs[0]).toBe("pandoc");
+    expect(calledArgs[1]).toEqual([
+      "input.md",
+      "-f",
+      "markdown",
+      "-t",
+      "html",
+      "-o",
+      "output.html",
+    ]);
+    expect(result).toBe("Done");
+  });
+
+  test("should add xelatex argument for pdf/latex", async () => {
+    let calledArgs: Parameters<ExecFileFn> = ["", [], () => {}];
+    mockExecFile = (cmd, args, callback) => {
+      calledArgs = [cmd, args, callback];
+      callback(null, "output-data", "");
+    };
+
+    await convert("input.md", "markdown", "pdf", "output.pdf", undefined, mockExecFile);
+
+    expect(calledArgs[1][0]).toBe("--pdf-engine=xelatex");
+    expect(calledArgs[1]).toContain("input.md");
+    expect(calledArgs[1]).toContain("-f");
+    expect(calledArgs[1]).toContain("markdown");
+    expect(calledArgs[1]).toContain("-t");
+    expect(calledArgs[1]).toContain("pdf");
+    expect(calledArgs[1]).toContain("-o");
+    expect(calledArgs[1]).toContain("output.pdf");
+  });
+
+  test("should reject if execFile returns an error", async () => {
+    mockExecFile = (cmd, args, callback) => callback(new Error("fail"), "", "");
+    expect(
+      convert("input.md", "markdown", "html", "output.html", undefined, mockExecFile),
+    ).rejects.toMatch(/error: Error: fail/);
+  });
+});

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/);
+  });
+});