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git.test.ts
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128 lines (111 loc) · 4.31 KB
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import { $ } from "bun"
import { describe, expect, test } from "bun:test"
import fs from "fs/promises"
import path from "path"
import { ManagedRuntime } from "effect"
import { Git } from "../../src/git"
import { tmpdir } from "../fixture/fixture"
const weird = process.platform === "win32" ? "space file.txt" : "tab\tfile.txt"
async function withGit<T>(body: (rt: ManagedRuntime.ManagedRuntime<Git.Service, never>) => Promise<T>) {
const rt = ManagedRuntime.make(Git.defaultLayer)
try {
return await body(rt)
} finally {
await rt.dispose()
}
}
describe("Git", () => {
test("branch() returns current branch name", async () => {
await using tmp = await tmpdir({ git: true })
await withGit(async (rt) => {
const branch = await rt.runPromise(Git.Service.use((git) => git.branch(tmp.path)))
expect(branch).toBeDefined()
expect(typeof branch).toBe("string")
})
})
test("branch() returns undefined for non-git directories", async () => {
await using tmp = await tmpdir()
await withGit(async (rt) => {
const branch = await rt.runPromise(Git.Service.use((git) => git.branch(tmp.path)))
expect(branch).toBeUndefined()
})
})
test("branch() returns undefined for detached HEAD", async () => {
await using tmp = await tmpdir({ git: true })
const hash = (await $`git rev-parse HEAD`.cwd(tmp.path).quiet().text()).trim()
await $`git checkout --detach ${hash}`.cwd(tmp.path).quiet()
await withGit(async (rt) => {
const branch = await rt.runPromise(Git.Service.use((git) => git.branch(tmp.path)))
expect(branch).toBeUndefined()
})
})
test("defaultBranch() uses init.defaultBranch when available", async () => {
await using tmp = await tmpdir({ git: true })
await $`git branch -M trunk`.cwd(tmp.path).quiet()
await $`git config init.defaultBranch trunk`.cwd(tmp.path).quiet()
await withGit(async (rt) => {
const branch = await rt.runPromise(Git.Service.use((git) => git.defaultBranch(tmp.path)))
expect(branch?.name).toBe("trunk")
expect(branch?.ref).toBe("trunk")
})
})
test("status() handles special filenames", async () => {
await using tmp = await tmpdir({ git: true })
await fs.writeFile(path.join(tmp.path, weird), "hello\n", "utf-8")
await withGit(async (rt) => {
const status = await rt.runPromise(Git.Service.use((git) => git.status(tmp.path)))
expect(status).toEqual(
expect.arrayContaining([
expect.objectContaining({
file: weird,
status: "added",
}),
]),
)
})
})
test("diff(), stats(), and mergeBase() parse tracked changes", async () => {
await using tmp = await tmpdir({ git: true })
await $`git branch -M main`.cwd(tmp.path).quiet()
await fs.writeFile(path.join(tmp.path, weird), "before\n", "utf-8")
await $`git add .`.cwd(tmp.path).quiet()
await $`git commit --no-gpg-sign -m "add file"`.cwd(tmp.path).quiet()
await $`git checkout -b feature/test`.cwd(tmp.path).quiet()
await fs.writeFile(path.join(tmp.path, weird), "after\n", "utf-8")
await withGit(async (rt) => {
const [base, diff, stats] = await Promise.all([
rt.runPromise(Git.Service.use((git) => git.mergeBase(tmp.path, "main"))),
rt.runPromise(Git.Service.use((git) => git.diff(tmp.path, "HEAD"))),
rt.runPromise(Git.Service.use((git) => git.stats(tmp.path, "HEAD"))),
])
expect(base).toBeTruthy()
expect(diff).toEqual(
expect.arrayContaining([
expect.objectContaining({
file: weird,
status: "modified",
}),
]),
)
expect(stats).toEqual(
expect.arrayContaining([
expect.objectContaining({
file: weird,
additions: 1,
deletions: 1,
}),
]),
)
})
})
test("show() returns empty text for binary blobs", async () => {
await using tmp = await tmpdir({ git: true })
await fs.writeFile(path.join(tmp.path, "bin.dat"), new Uint8Array([0, 1, 2, 3]))
await $`git add .`.cwd(tmp.path).quiet()
await $`git commit --no-gpg-sign -m "add binary"`.cwd(tmp.path).quiet()
await withGit(async (rt) => {
const text = await rt.runPromise(Git.Service.use((git) => git.show(tmp.path, "HEAD", "bin.dat")))
expect(text).toBe("")
})
})
})