test: add unit test for dvisvgm.ts

src/converters/dvisvgm.ts

@@ -1,4 +1,5 @@
-import { execFile } from "node:child_process";
+import { execFile as execFileOriginal } from "node:child_process";
+import { ExecFileFn } from "./types.ts";
 
 export const properties = {
   from: {
@@ -14,8 +15,8 @@ export function convert(
   fileType: string,
   convertTo: string,
   targetPath: string,
-  // eslint-disable-next-line @typescript-eslint/no-unused-vars
   options?: unknown,
+  execFile: ExecFileFn = execFileOriginal, // to make it mockable
 ): Promise<string> {
   const inputArgs: string[] = [];
   if (fileType === "eps") {

tests/converters/assimp.test.ts

@@ -4,7 +4,7 @@ import {
   runConvertFailTest,
   runConvertLogsStderror,
   runConvertSuccessTest,
-} from "./convertersHelper.test.ts";
+} from "./helpers/converters.ts";
 
 test("convert resolves when execFile succeeds", async () => {
   await runConvertSuccessTest(convert);

tests/converters/calibre.test.ts

@@ -4,7 +4,7 @@ import {
   runConvertFailTest,
   runConvertLogsStderror,
   runConvertSuccessTest,
-} from "./convertersHelper.test.ts";
+} from "./helpers/converters.ts";
 
 test("convert resolves when execFile succeeds", async () => {
   await runConvertSuccessTest(convert);

tests/converters/dvisvgm.test.ts

@@ -0,0 +1,93 @@
+import type { ExecFileException } from "node:child_process";
+import { expect, test } from "bun:test";
+import { convert } from "../../src/converters/dvisvgm.ts";
+import { ExecFileFn } from "../../src/converters/types.ts";
+import {
+  runConvertFailTest,
+  runConvertLogsStderror,
+  runConvertSuccessTest,
+} from "./helpers/converters.ts";
+
+test("convert resolves when execFile succeeds", async () => {
+  await runConvertSuccessTest(convert);
+});
+
+test("convert rejects when execFile fails", async () => {
+  await runConvertFailTest(convert);
+});
+
+test("convert logs stderr when present", async () => {
+  await runConvertLogsStderror(convert);
+});
+
+test("convert respects eps filetype", async () => {
+  const originalConsoleLog = console.log;
+
+  let loggedMessage = "";
+  console.log = (msg) => {
+    loggedMessage = msg;
+  };
+
+  const mockExecFile: ExecFileFn = (
+    _cmd: string,
+    _args: string[],
+    callback: (err: ExecFileException | null, stdout: string, stderr: string) => void,
+  ) => {
+    callback(null, "Fake stdout", "");
+  };
+
+  const result = await convert("input.obj", "eps", "stl", "output.stl", undefined, mockExecFile);
+
+  console.log = originalConsoleLog;
+
+  expect(result).toBe("Done");
+  expect(loggedMessage).toBe("stdout: Fake stdout");
+});
+
+test("convert respects pdf filetype", async () => {
+  const originalConsoleLog = console.log;
+
+  let loggedMessage = "";
+  console.log = (msg) => {
+    loggedMessage = msg;
+  };
+
+  const mockExecFile: ExecFileFn = (
+    _cmd: string,
+    _args: string[],
+    callback: (err: ExecFileException | null, stdout: string, stderr: string) => void,
+  ) => {
+    callback(null, "Fake stdout", "");
+  };
+
+  const result = await convert("input.obj", "pdf", "stl", "output.stl", undefined, mockExecFile);
+
+  console.log = originalConsoleLog;
+
+  expect(result).toBe("Done");
+  expect(loggedMessage).toBe("stdout: Fake stdout");
+});
+
+test("convert respects svgz conversion target type", async () => {
+  const originalConsoleLog = console.log;
+
+  let loggedMessage = "";
+  console.log = (msg) => {
+    loggedMessage = msg;
+  };
+
+  const mockExecFile: ExecFileFn = (
+    _cmd: string,
+    _args: string[],
+    callback: (err: ExecFileException | null, stdout: string, stderr: string) => void,
+  ) => {
+    callback(null, "Fake stdout", "");
+  };
+
+  const result = await convert("input.obj", "eps", "svgz", "output.stl", undefined, mockExecFile);
+
+  console.log = originalConsoleLog;
+
+  expect(result).toBe("Done");
+  expect(loggedMessage).toBe("stdout: Fake stdout");
+});

tests/converters/helpers/converters.ts

@@ -1,6 +1,6 @@
 import type { ExecFileException } from "node:child_process";
 import { expect } from "bun:test";
-import { ConvertFnWithExecFile, ExecFileFn } from "../../src/converters/types.ts";
+import { ConvertFnWithExecFile, ExecFileFn } from "../../../src/converters/types.ts";
 
 export async function runConvertSuccessTest(convertFn: ConvertFnWithExecFile) {
   const originalConsoleLog = console.log;