Files
opencode/packages/opencode/test/snapshot/snapshot.test.ts

1181 lines
36 KiB
TypeScript

import { test, expect } from "bun:test"
import { $ } from "bun"
import fs from "fs/promises"
import path from "path"
import { Snapshot } from "../../src/snapshot"
import { Instance } from "../../src/project/instance"
import { Filesystem } from "../../src/util/filesystem"
import { tmpdir } from "../fixture/fixture"
// Git always outputs /-separated paths internally. Snapshot.patch() joins them
// with path.join (which produces \ on Windows) then normalizes back to /.
// This helper does the same for expected values so assertions match cross-platform.
const fwd = (...parts: string[]) => path.join(...parts).replaceAll("\\", "/")
async function bootstrap() {
return tmpdir({
git: true,
init: async (dir) => {
const unique = Math.random().toString(36).slice(2)
const aContent = `A${unique}`
const bContent = `B${unique}`
await Filesystem.write(`${dir}/a.txt`, aContent)
await Filesystem.write(`${dir}/b.txt`, bContent)
await $`git add .`.cwd(dir).quiet()
await $`git commit --no-gpg-sign -m init`.cwd(dir).quiet()
return {
aContent,
bContent,
}
},
})
}
test("tracks deleted files correctly", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await $`rm ${tmp.path}/a.txt`.quiet()
expect((await Snapshot.patch(before!)).files).toContain(fwd(tmp.path, "a.txt"))
},
})
})
test("revert should remove new files", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/new.txt`, "NEW")
await Snapshot.revert([await Snapshot.patch(before!)])
expect(
await fs
.access(`${tmp.path}/new.txt`)
.then(() => true)
.catch(() => false),
).toBe(false)
},
})
})
test("revert in subdirectory", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await $`mkdir -p ${tmp.path}/sub`.quiet()
await Filesystem.write(`${tmp.path}/sub/file.txt`, "SUB")
await Snapshot.revert([await Snapshot.patch(before!)])
expect(
await fs
.access(`${tmp.path}/sub/file.txt`)
.then(() => true)
.catch(() => false),
).toBe(false)
// Note: revert currently only removes files, not directories
// The empty subdirectory will remain
},
})
})
test("multiple file operations", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await $`rm ${tmp.path}/a.txt`.quiet()
await Filesystem.write(`${tmp.path}/c.txt`, "C")
await $`mkdir -p ${tmp.path}/dir`.quiet()
await Filesystem.write(`${tmp.path}/dir/d.txt`, "D")
await Filesystem.write(`${tmp.path}/b.txt`, "MODIFIED")
await Snapshot.revert([await Snapshot.patch(before!)])
expect(await fs.readFile(`${tmp.path}/a.txt`, "utf-8")).toBe(tmp.extra.aContent)
expect(
await fs
.access(`${tmp.path}/c.txt`)
.then(() => true)
.catch(() => false),
).toBe(false)
// Note: revert currently only removes files, not directories
// The empty directory will remain
expect(await fs.readFile(`${tmp.path}/b.txt`, "utf-8")).toBe(tmp.extra.bContent)
},
})
})
test("empty directory handling", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await $`mkdir ${tmp.path}/empty`.quiet()
expect((await Snapshot.patch(before!)).files.length).toBe(0)
},
})
})
test("binary file handling", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/image.png`, new Uint8Array([0x89, 0x50, 0x4e, 0x47]))
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(fwd(tmp.path, "image.png"))
await Snapshot.revert([patch])
expect(
await fs
.access(`${tmp.path}/image.png`)
.then(() => true)
.catch(() => false),
).toBe(false)
},
})
})
test("symlink handling", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await fs.symlink(`${tmp.path}/a.txt`, `${tmp.path}/link.txt`, "file")
expect((await Snapshot.patch(before!)).files).toContain(fwd(tmp.path, "link.txt"))
},
})
})
test("large file handling", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/large.txt`, "x".repeat(1024 * 1024))
expect((await Snapshot.patch(before!)).files).toContain(fwd(tmp.path, "large.txt"))
},
})
})
test("nested directory revert", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await $`mkdir -p ${tmp.path}/level1/level2/level3`.quiet()
await Filesystem.write(`${tmp.path}/level1/level2/level3/deep.txt`, "DEEP")
await Snapshot.revert([await Snapshot.patch(before!)])
expect(
await fs
.access(`${tmp.path}/level1/level2/level3/deep.txt`)
.then(() => true)
.catch(() => false),
).toBe(false)
},
})
})
test("special characters in filenames", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/file with spaces.txt`, "SPACES")
await Filesystem.write(`${tmp.path}/file-with-dashes.txt`, "DASHES")
await Filesystem.write(`${tmp.path}/file_with_underscores.txt`, "UNDERSCORES")
const files = (await Snapshot.patch(before!)).files
expect(files).toContain(fwd(tmp.path, "file with spaces.txt"))
expect(files).toContain(fwd(tmp.path, "file-with-dashes.txt"))
expect(files).toContain(fwd(tmp.path, "file_with_underscores.txt"))
},
})
})
test("revert with empty patches", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
// Should not crash with empty patches
expect(Snapshot.revert([])).resolves.toBeUndefined()
// Should not crash with patches that have empty file lists
expect(Snapshot.revert([{ hash: "dummy", files: [] }])).resolves.toBeUndefined()
},
})
})
test("patch with invalid hash", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
// Create a change
await Filesystem.write(`${tmp.path}/test.txt`, "TEST")
// Try to patch with invalid hash - should handle gracefully
const patch = await Snapshot.patch("invalid-hash-12345")
expect(patch.files).toEqual([])
expect(patch.hash).toBe("invalid-hash-12345")
},
})
})
test("revert non-existent file", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
// Try to revert a file that doesn't exist in the snapshot
// This should not crash
expect(
Snapshot.revert([
{
hash: before!,
files: [`${tmp.path}/nonexistent.txt`],
},
]),
).resolves.toBeUndefined()
},
})
})
test("unicode filenames", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
const unicodeFiles = [
{ path: fwd(tmp.path, "文件.txt"), content: "chinese content" },
{ path: fwd(tmp.path, "🚀rocket.txt"), content: "emoji content" },
{ path: fwd(tmp.path, "café.txt"), content: "accented content" },
{ path: fwd(tmp.path, "файл.txt"), content: "cyrillic content" },
]
for (const file of unicodeFiles) {
await Filesystem.write(file.path, file.content)
}
const patch = await Snapshot.patch(before!)
expect(patch.files.length).toBe(4)
for (const file of unicodeFiles) {
expect(patch.files).toContain(file.path)
}
await Snapshot.revert([patch])
for (const file of unicodeFiles) {
expect(
await fs
.access(file.path)
.then(() => true)
.catch(() => false),
).toBe(false)
}
},
})
})
test.skip("unicode filenames modification and restore", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const chineseFile = fwd(tmp.path, "文件.txt")
const cyrillicFile = fwd(tmp.path, "файл.txt")
await Filesystem.write(chineseFile, "original chinese")
await Filesystem.write(cyrillicFile, "original cyrillic")
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(chineseFile, "modified chinese")
await Filesystem.write(cyrillicFile, "modified cyrillic")
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(chineseFile)
expect(patch.files).toContain(cyrillicFile)
await Snapshot.revert([patch])
expect(await fs.readFile(chineseFile, "utf-8")).toBe("original chinese")
expect(await fs.readFile(cyrillicFile, "utf-8")).toBe("original cyrillic")
},
})
})
test("unicode filenames in subdirectories", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await $`mkdir -p "${tmp.path}/目录/подкаталог"`.quiet()
const deepFile = fwd(tmp.path, "目录", "подкаталог", "文件.txt")
await Filesystem.write(deepFile, "deep unicode content")
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(deepFile)
await Snapshot.revert([patch])
expect(
await fs
.access(deepFile)
.then(() => true)
.catch(() => false),
).toBe(false)
},
})
})
test("very long filenames", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
const longName = "a".repeat(200) + ".txt"
const longFile = fwd(tmp.path, longName)
await Filesystem.write(longFile, "long filename content")
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(longFile)
await Snapshot.revert([patch])
expect(
await fs
.access(longFile)
.then(() => true)
.catch(() => false),
).toBe(false)
},
})
})
test("hidden files", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/.hidden`, "hidden content")
await Filesystem.write(`${tmp.path}/.gitignore`, "*.log")
await Filesystem.write(`${tmp.path}/.config`, "config content")
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(fwd(tmp.path, ".hidden"))
expect(patch.files).toContain(fwd(tmp.path, ".gitignore"))
expect(patch.files).toContain(fwd(tmp.path, ".config"))
},
})
})
test("nested symlinks", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await $`mkdir -p ${tmp.path}/sub/dir`.quiet()
await Filesystem.write(`${tmp.path}/sub/dir/target.txt`, "target content")
await fs.symlink(`${tmp.path}/sub/dir/target.txt`, `${tmp.path}/sub/dir/link.txt`, "file")
await fs.symlink(`${tmp.path}/sub`, `${tmp.path}/sub-link`, "dir")
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(fwd(tmp.path, "sub", "dir", "link.txt"))
expect(patch.files).toContain(fwd(tmp.path, "sub-link"))
},
})
})
test("file permissions and ownership changes", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
// Change permissions multiple times
await $`chmod 600 ${tmp.path}/a.txt`.quiet()
await $`chmod 755 ${tmp.path}/a.txt`.quiet()
await $`chmod 644 ${tmp.path}/a.txt`.quiet()
const patch = await Snapshot.patch(before!)
// Note: git doesn't track permission changes on existing files by default
// Only tracks executable bit when files are first added
expect(patch.files.length).toBe(0)
},
})
})
test("circular symlinks", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
// Create circular symlink
await fs.symlink(`${tmp.path}/circular`, `${tmp.path}/circular`, "dir").catch(() => {})
const patch = await Snapshot.patch(before!)
expect(patch.files.length).toBeGreaterThanOrEqual(0) // Should not crash
},
})
})
test("gitignore changes", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/.gitignore`, "*.ignored")
await Filesystem.write(`${tmp.path}/test.ignored`, "ignored content")
await Filesystem.write(`${tmp.path}/normal.txt`, "normal content")
const patch = await Snapshot.patch(before!)
// Should track gitignore itself
expect(patch.files).toContain(fwd(tmp.path, ".gitignore"))
// Should track normal files
expect(patch.files).toContain(fwd(tmp.path, "normal.txt"))
// Should not track ignored files (git won't see them)
expect(patch.files).not.toContain(fwd(tmp.path, "test.ignored"))
},
})
})
test("git info exclude changes", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
const file = `${tmp.path}/.git/info/exclude`
const text = await Bun.file(file).text()
await Bun.write(file, `${text.trimEnd()}\nignored.txt\n`)
await Bun.write(`${tmp.path}/ignored.txt`, "ignored content")
await Bun.write(`${tmp.path}/normal.txt`, "normal content")
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(fwd(tmp.path, "normal.txt"))
expect(patch.files).not.toContain(fwd(tmp.path, "ignored.txt"))
const after = await Snapshot.track()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.some((x) => x.file === "normal.txt")).toBe(true)
expect(diffs.some((x) => x.file === "ignored.txt")).toBe(false)
},
})
})
test("git info exclude keeps global excludes", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const global = `${tmp.path}/global.ignore`
const config = `${tmp.path}/global.gitconfig`
await Bun.write(global, "global.tmp\n")
await Bun.write(config, `[core]\n\texcludesFile = ${global}\n`)
const prev = process.env.GIT_CONFIG_GLOBAL
process.env.GIT_CONFIG_GLOBAL = config
try {
const before = await Snapshot.track()
expect(before).toBeTruthy()
const file = `${tmp.path}/.git/info/exclude`
const text = await Bun.file(file).text()
await Bun.write(file, `${text.trimEnd()}\ninfo.tmp\n`)
await Bun.write(`${tmp.path}/global.tmp`, "global content")
await Bun.write(`${tmp.path}/info.tmp`, "info content")
await Bun.write(`${tmp.path}/normal.txt`, "normal content")
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(fwd(tmp.path, "normal.txt"))
expect(patch.files).not.toContain(fwd(tmp.path, "global.tmp"))
expect(patch.files).not.toContain(fwd(tmp.path, "info.tmp"))
} finally {
if (prev) process.env.GIT_CONFIG_GLOBAL = prev
else delete process.env.GIT_CONFIG_GLOBAL
}
},
})
})
test("concurrent file operations during patch", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
// Start creating files
const createPromise = (async () => {
for (let i = 0; i < 10; i++) {
await Filesystem.write(`${tmp.path}/concurrent${i}.txt`, `concurrent${i}`)
// Small delay to simulate concurrent operations
await new Promise((resolve) => setTimeout(resolve, 1))
}
})()
// Get patch while files are being created
const patchPromise = Snapshot.patch(before!)
await createPromise
const patch = await patchPromise
// Should capture some or all of the concurrent files
expect(patch.files.length).toBeGreaterThanOrEqual(0)
},
})
})
test("snapshot state isolation between projects", async () => {
// Test that different projects don't interfere with each other
await using tmp1 = await bootstrap()
await using tmp2 = await bootstrap()
await Instance.provide({
directory: tmp1.path,
fn: async () => {
const before1 = await Snapshot.track()
await Filesystem.write(`${tmp1.path}/project1.txt`, "project1 content")
const patch1 = await Snapshot.patch(before1!)
expect(patch1.files).toContain(fwd(tmp1.path, "project1.txt"))
},
})
await Instance.provide({
directory: tmp2.path,
fn: async () => {
const before2 = await Snapshot.track()
await Filesystem.write(`${tmp2.path}/project2.txt`, "project2 content")
const patch2 = await Snapshot.patch(before2!)
expect(patch2.files).toContain(fwd(tmp2.path, "project2.txt"))
// Ensure project1 files don't appear in project2
expect(patch2.files).not.toContain(fwd(tmp1?.path ?? "", "project1.txt"))
},
})
})
test("patch detects changes in secondary worktree", async () => {
await using tmp = await bootstrap()
const worktreePath = `${tmp.path}-worktree`
await $`git worktree add ${worktreePath} HEAD`.cwd(tmp.path).quiet()
try {
await Instance.provide({
directory: tmp.path,
fn: async () => {
expect(await Snapshot.track()).toBeTruthy()
},
})
await Instance.provide({
directory: worktreePath,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
const worktreeFile = fwd(worktreePath, "worktree.txt")
await Filesystem.write(worktreeFile, "worktree content")
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(worktreeFile)
},
})
} finally {
await $`git worktree remove --force ${worktreePath}`.cwd(tmp.path).quiet().nothrow()
await $`rm -rf ${worktreePath}`.quiet()
}
})
test("revert only removes files in invoking worktree", async () => {
await using tmp = await bootstrap()
const worktreePath = `${tmp.path}-worktree`
await $`git worktree add ${worktreePath} HEAD`.cwd(tmp.path).quiet()
try {
await Instance.provide({
directory: tmp.path,
fn: async () => {
expect(await Snapshot.track()).toBeTruthy()
},
})
const primaryFile = `${tmp.path}/worktree.txt`
await Filesystem.write(primaryFile, "primary content")
await Instance.provide({
directory: worktreePath,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
const worktreeFile = fwd(worktreePath, "worktree.txt")
await Filesystem.write(worktreeFile, "worktree content")
const patch = await Snapshot.patch(before!)
await Snapshot.revert([patch])
expect(
await fs
.access(worktreeFile)
.then(() => true)
.catch(() => false),
).toBe(false)
},
})
expect(await fs.readFile(primaryFile, "utf-8")).toBe("primary content")
} finally {
await $`git worktree remove --force ${worktreePath}`.cwd(tmp.path).quiet().nothrow()
await $`rm -rf ${worktreePath}`.quiet()
await $`rm -f ${tmp.path}/worktree.txt`.quiet()
}
})
test("diff reports worktree-only/shared edits and ignores primary-only", async () => {
await using tmp = await bootstrap()
const worktreePath = `${tmp.path}-worktree`
await $`git worktree add ${worktreePath} HEAD`.cwd(tmp.path).quiet()
try {
await Instance.provide({
directory: tmp.path,
fn: async () => {
expect(await Snapshot.track()).toBeTruthy()
},
})
await Instance.provide({
directory: worktreePath,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${worktreePath}/worktree-only.txt`, "worktree diff content")
await Filesystem.write(`${worktreePath}/shared.txt`, "worktree edit")
await Filesystem.write(`${tmp.path}/shared.txt`, "primary edit")
await Filesystem.write(`${tmp.path}/primary-only.txt`, "primary change")
const diff = await Snapshot.diff(before!)
expect(diff).toContain("worktree-only.txt")
expect(diff).toContain("shared.txt")
expect(diff).not.toContain("primary-only.txt")
},
})
} finally {
await $`git worktree remove --force ${worktreePath}`.cwd(tmp.path).quiet().nothrow()
await $`rm -rf ${worktreePath}`.quiet()
await $`rm -f ${tmp.path}/shared.txt`.quiet()
await $`rm -f ${tmp.path}/primary-only.txt`.quiet()
}
})
test("track with no changes returns same hash", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const hash1 = await Snapshot.track()
expect(hash1).toBeTruthy()
// Track again with no changes
const hash2 = await Snapshot.track()
expect(hash2).toBe(hash1!)
// Track again
const hash3 = await Snapshot.track()
expect(hash3).toBe(hash1!)
},
})
})
test("diff function with various changes", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
// Make various changes
await $`rm ${tmp.path}/a.txt`.quiet()
await Filesystem.write(`${tmp.path}/new.txt`, "new content")
await Filesystem.write(`${tmp.path}/b.txt`, "modified content")
const diff = await Snapshot.diff(before!)
expect(diff).toContain("a.txt")
expect(diff).toContain("b.txt")
expect(diff).toContain("new.txt")
},
})
})
test("restore function", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
// Make changes
await $`rm ${tmp.path}/a.txt`.quiet()
await Filesystem.write(`${tmp.path}/new.txt`, "new content")
await Filesystem.write(`${tmp.path}/b.txt`, "modified")
// Restore to original state
await Snapshot.restore(before!)
expect(
await fs
.access(`${tmp.path}/a.txt`)
.then(() => true)
.catch(() => false),
).toBe(true)
expect(await fs.readFile(`${tmp.path}/a.txt`, "utf-8")).toBe(tmp.extra.aContent)
expect(
await fs
.access(`${tmp.path}/new.txt`)
.then(() => true)
.catch(() => false),
).toBe(true) // New files should remain
expect(await fs.readFile(`${tmp.path}/b.txt`, "utf-8")).toBe(tmp.extra.bContent)
},
})
})
test("revert should not delete files that existed but were deleted in snapshot", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const snapshot1 = await Snapshot.track()
expect(snapshot1).toBeTruthy()
await $`rm ${tmp.path}/a.txt`.quiet()
const snapshot2 = await Snapshot.track()
expect(snapshot2).toBeTruthy()
await Filesystem.write(`${tmp.path}/a.txt`, "recreated content")
const patch = await Snapshot.patch(snapshot2!)
expect(patch.files).toContain(fwd(tmp.path, "a.txt"))
await Snapshot.revert([patch])
expect(
await fs
.access(`${tmp.path}/a.txt`)
.then(() => true)
.catch(() => false),
).toBe(false)
},
})
})
test("revert preserves file that existed in snapshot when deleted then recreated", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
await Filesystem.write(`${tmp.path}/existing.txt`, "original content")
const snapshot = await Snapshot.track()
expect(snapshot).toBeTruthy()
await $`rm ${tmp.path}/existing.txt`.quiet()
await Filesystem.write(`${tmp.path}/existing.txt`, "recreated")
await Filesystem.write(`${tmp.path}/newfile.txt`, "new")
const patch = await Snapshot.patch(snapshot!)
expect(patch.files).toContain(fwd(tmp.path, "existing.txt"))
expect(patch.files).toContain(fwd(tmp.path, "newfile.txt"))
await Snapshot.revert([patch])
expect(
await fs
.access(`${tmp.path}/newfile.txt`)
.then(() => true)
.catch(() => false),
).toBe(false)
expect(
await fs
.access(`${tmp.path}/existing.txt`)
.then(() => true)
.catch(() => false),
).toBe(true)
expect(await fs.readFile(`${tmp.path}/existing.txt`, "utf-8")).toBe("original content")
},
})
})
test("diffFull sets status based on git change type", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
await Filesystem.write(`${tmp.path}/grow.txt`, "one\n")
await Filesystem.write(`${tmp.path}/trim.txt`, "line1\nline2\n")
await Filesystem.write(`${tmp.path}/delete.txt`, "gone")
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/grow.txt`, "one\ntwo\n")
await Filesystem.write(`${tmp.path}/trim.txt`, "line1\n")
await $`rm ${tmp.path}/delete.txt`.quiet()
await Filesystem.write(`${tmp.path}/added.txt`, "new")
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(4)
const added = diffs.find((d) => d.file === "added.txt")
expect(added).toBeDefined()
expect(added!.status).toBe("added")
const deleted = diffs.find((d) => d.file === "delete.txt")
expect(deleted).toBeDefined()
expect(deleted!.status).toBe("deleted")
const grow = diffs.find((d) => d.file === "grow.txt")
expect(grow).toBeDefined()
expect(grow!.status).toBe("modified")
expect(grow!.additions).toBeGreaterThan(0)
expect(grow!.deletions).toBe(0)
const trim = diffs.find((d) => d.file === "trim.txt")
expect(trim).toBeDefined()
expect(trim!.status).toBe("modified")
expect(trim!.additions).toBe(0)
expect(trim!.deletions).toBeGreaterThan(0)
},
})
})
test("diffFull with new file additions", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/new.txt`, "new content")
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(1)
const newFileDiff = diffs[0]
expect(newFileDiff.file).toBe("new.txt")
expect(newFileDiff.before).toBe("")
expect(newFileDiff.after).toBe("new content")
expect(newFileDiff.additions).toBe(1)
expect(newFileDiff.deletions).toBe(0)
},
})
})
test("diffFull with file modifications", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/b.txt`, "modified content")
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(1)
const modifiedFileDiff = diffs[0]
expect(modifiedFileDiff.file).toBe("b.txt")
expect(modifiedFileDiff.before).toBe(tmp.extra.bContent)
expect(modifiedFileDiff.after).toBe("modified content")
expect(modifiedFileDiff.additions).toBeGreaterThan(0)
expect(modifiedFileDiff.deletions).toBeGreaterThan(0)
},
})
})
test("diffFull with file deletions", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await $`rm ${tmp.path}/a.txt`.quiet()
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(1)
const removedFileDiff = diffs[0]
expect(removedFileDiff.file).toBe("a.txt")
expect(removedFileDiff.before).toBe(tmp.extra.aContent)
expect(removedFileDiff.after).toBe("")
expect(removedFileDiff.additions).toBe(0)
expect(removedFileDiff.deletions).toBe(1)
},
})
})
test("diffFull with multiple line additions", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/multi.txt`, "line1\nline2\nline3")
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(1)
const multiDiff = diffs[0]
expect(multiDiff.file).toBe("multi.txt")
expect(multiDiff.before).toBe("")
expect(multiDiff.after).toBe("line1\nline2\nline3")
expect(multiDiff.additions).toBe(3)
expect(multiDiff.deletions).toBe(0)
},
})
})
test("diffFull with addition and deletion", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/added.txt`, "added content")
await $`rm ${tmp.path}/a.txt`.quiet()
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(2)
const addedFileDiff = diffs.find((d) => d.file === "added.txt")
expect(addedFileDiff).toBeDefined()
expect(addedFileDiff!.before).toBe("")
expect(addedFileDiff!.after).toBe("added content")
expect(addedFileDiff!.additions).toBe(1)
expect(addedFileDiff!.deletions).toBe(0)
const removedFileDiff = diffs.find((d) => d.file === "a.txt")
expect(removedFileDiff).toBeDefined()
expect(removedFileDiff!.before).toBe(tmp.extra.aContent)
expect(removedFileDiff!.after).toBe("")
expect(removedFileDiff!.additions).toBe(0)
expect(removedFileDiff!.deletions).toBe(1)
},
})
})
test("diffFull with multiple additions and deletions", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/multi1.txt`, "line1\nline2\nline3")
await Filesystem.write(`${tmp.path}/multi2.txt`, "single line")
await $`rm ${tmp.path}/a.txt`.quiet()
await $`rm ${tmp.path}/b.txt`.quiet()
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(4)
const multi1Diff = diffs.find((d) => d.file === "multi1.txt")
expect(multi1Diff).toBeDefined()
expect(multi1Diff!.additions).toBe(3)
expect(multi1Diff!.deletions).toBe(0)
const multi2Diff = diffs.find((d) => d.file === "multi2.txt")
expect(multi2Diff).toBeDefined()
expect(multi2Diff!.additions).toBe(1)
expect(multi2Diff!.deletions).toBe(0)
const removedADiff = diffs.find((d) => d.file === "a.txt")
expect(removedADiff).toBeDefined()
expect(removedADiff!.additions).toBe(0)
expect(removedADiff!.deletions).toBe(1)
const removedBDiff = diffs.find((d) => d.file === "b.txt")
expect(removedBDiff).toBeDefined()
expect(removedBDiff!.additions).toBe(0)
expect(removedBDiff!.deletions).toBe(1)
},
})
})
test("diffFull with no changes", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(0)
},
})
})
test("diffFull with binary file changes", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/binary.bin`, new Uint8Array([0x00, 0x01, 0x02, 0x03]))
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(1)
const binaryDiff = diffs[0]
expect(binaryDiff.file).toBe("binary.bin")
expect(binaryDiff.before).toBe("")
},
})
})
test("diffFull with whitespace changes", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
await Filesystem.write(`${tmp.path}/whitespace.txt`, "line1\nline2")
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Filesystem.write(`${tmp.path}/whitespace.txt`, "line1\n\nline2\n")
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(1)
const whitespaceDiff = diffs[0]
expect(whitespaceDiff.file).toBe("whitespace.txt")
expect(whitespaceDiff.additions).toBeGreaterThan(0)
},
})
})