test: add unit test for msgconvert.ts

tests/converters/msgconvert.test.ts

@@ -0,0 +1,64 @@
+import type { ExecFileException } from "node:child_process";
+import { expect, test } from "bun:test";
+import { convert } from "../../src/converters/msgconvert.ts";
+import { ExecFileFn } from "../../src/converters/types.ts";
+
+test("convert rejects conversion if input filetype is not msg and output type is not eml", async () => {
+  const mockExecFile: ExecFileFn = (
+    _cmd: string,
+    _args: string[],
+    options: unknown,
+    callback: (err: ExecFileException | null, stdout: string, stderr: string) => void,
+  ) => {
+    callback(null, "Fake stdout", "");
+  };
+
+  const expectedError = new Error(
+    "Unsupported conversion from obj to stl. Only MSG to EML conversion is currently supported.",
+  );
+
+  expect(convert("input.obj", "obj", "stl", "output.stl", undefined, mockExecFile)).rejects.toEqual(
+    expectedError,
+  );
+});
+
+test("convert rejects conversion on error", async () => {
+  const mockExecFile: ExecFileFn = (
+    _cmd: string,
+    _args: string[],
+    options: unknown,
+    callback: (err: ExecFileException | null, stdout: string, stderr: string) => void,
+  ) => {
+    callback(new Error("Test error"), "", "");
+  };
+
+  const expectedError = new Error("msgconvert failed: Test error")
+
+  expect(
+    convert("input.msg", "msg", "eml", "output.eml", undefined, mockExecFile),
+  ).rejects.toEqual(expectedError);
+})
+
+test("convert logs stderr as warning", async () => {
+  const originalConsoleWarn = console.warn;
+
+  let loggedMessage = "";
+  console.warn = (msg) => {
+    loggedMessage = msg;
+  };
+
+  const mockExecFile = (
+    _cmd: string,
+    _args: string[],
+    options: unknown,
+    callback: (err: Error | null, stdout: string, stderr: string) => void,
+  ) => {
+    callback(null, "", "Fake stderr");
+  };
+
+  await convert("file.msg", "msg", "eml", "out.eml", undefined, mockExecFile);
+
+  console.error = originalConsoleWarn;
+
+  expect(loggedMessage).toBe("msgconvert stderr: Fake stderr");
+})