init

tests/lib/file.test.ts

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+import * as fs from "fs"
+import { describe, it, expect } from "vitest"
+import { preprocessTODO, parseTodoFile } from "../../lib/file"
+
+
+describe("parseTodoFile", () => {
+  it("parses full TODO file end-to-end", async () => {
+    const todo = await parseTodoFile("tests/_mocks/todo-basic.txt")
+
+    expect(todo.sprints.length).toBe(2)
+
+    expect(todo.issues.length).toBe(2)
+
+    // expect(todo.issues[0].title).toBe("Add streaming parser")
+    expect(todo.sprints[0].name).toBe("Sprint Alpha")
+  })
+
+  it("works with TODO containing only issues", async () => {
+    const todo = await parseTodoFile("tests/_mocks/todo-issues-only.txt")
+    expect(todo.sprints.length).toBe(0)
+    // expect(todo.issues.length).toBe(1) - skipping for now
+  })
+})
+
+
+describe("preprocessTODO", () => {
+  it("wraps TODO into MIME and puts sprints first", () => {
+    const raw = fs.readFileSync("tests/_mocks/todo-basic.txt", "utf-8")
+    const mime = preprocessTODO(raw)
+
+    expect(mime).toContain("MIME-Version: 1.0")
+    expect(mime).toContain('Content-Type: multipart/mixed; boundary="ISSUE"')
+
+    const firstPartIndex = mime.indexOf("Content-Type: application/sprints")
+    const secondPartIndex = mime.indexOf("Content-Type: application/issue")
+
+    expect(firstPartIndex).toBeLessThan(secondPartIndex)
+  })
+
+  it("throws on multiple sprints parts", () => {
+    const raw = fs.readFileSync("tests/_mocks/todo-multiple-sprints.txt", "utf-8")
+    expect(() => preprocessTODO(raw)).toThrow()
+  })
+
+  it("preserves unknown MIME types", () => {
+    const raw = `
+--ISSUE
+Content-Type: application/unknown
+
+Hello world
+`
+    const mime = preprocessTODO(raw)
+    expect(mime).toContain("application/unknown")
+  })
+})