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

831 lines
25 KiB
TypeScript

import { test, expect } from "bun:test"
import { $ } from "bun"
import { Snapshot } from "../../src/snapshot"
import { Instance } from "../../src/project/instance"
import { tmpdir } from "../fixture/fixture"
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 Bun.write(`${dir}/a.txt`, aContent)
await Bun.write(`${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 ${tmp.path}/a.txt`.quiet()
expect((await Snapshot.patch(before!)).files).toContain(`${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 Bun.write(`${tmp.path}/new.txt`, "NEW")
await Snapshot.revert([await Snapshot.patch(before!)])
expect(await Bun.file(`${tmp.path}/new.txt`).exists()).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 ${tmp.path}/sub`.quiet()
await Bun.write(`${tmp.path}/sub/file.txt`, "SUB")
await Snapshot.revert([await Snapshot.patch(before!)])
expect(await Bun.file(`${tmp.path}/sub/file.txt`).exists()).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 ${tmp.path}/a.txt`.quiet()
await Bun.write(`${tmp.path}/c.txt`, "C")
await $`mkdir -p ${tmp.path}/dir`.quiet()
await Bun.write(`${tmp.path}/dir/d.txt`, "D")
await Bun.write(`${tmp.path}/b.txt`, "MODIFIED")
await Snapshot.revert([await Snapshot.patch(before!)])
expect(await Bun.file(`${tmp.path}/a.txt`).text()).toBe(tmp.extra.aContent)
expect(await Bun.file(`${tmp.path}/c.txt`).exists()).toBe(false)
// Note: revert currently only removes files, not directories
// The empty directory will remain
expect(await Bun.file(`${tmp.path}/b.txt`).text()).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 ${tmp.path}/empty`.quiet()
expect((await Snapshot.patch(before!)).files.length).toBe(0)
},
})
})
test("binary file handling", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Bun.write(`${tmp.path}/image.png`, new Uint8Array([0x89, 0x50, 0x4e, 0x47]))
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(`${tmp.path}/image.png`)
await Snapshot.revert([patch])
expect(await Bun.file(`${tmp.path}/image.png`).exists()).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 $`ln -s ${tmp.path}/a.txt ${tmp.path}/link.txt`.quiet()
expect((await Snapshot.patch(before!)).files).toContain(`${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 Bun.write(`${tmp.path}/large.txt`, "x".repeat(1024 * 1024))
expect((await Snapshot.patch(before!)).files).toContain(`${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 ${tmp.path}/level1/level2/level3`.quiet()
await Bun.write(`${tmp.path}/level1/level2/level3/deep.txt`, "DEEP")
await Snapshot.revert([await Snapshot.patch(before!)])
expect(await Bun.file(`${tmp.path}/level1/level2/level3/deep.txt`).exists()).toBe(false)
},
})
})
test("special characters in filenames", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Bun.write(`${tmp.path}/file with spaces.txt`, "SPACES")
await Bun.write(`${tmp.path}/file-with-dashes.txt`, "DASHES")
await Bun.write(`${tmp.path}/file_with_underscores.txt`, "UNDERSCORES")
const files = (await Snapshot.patch(before!)).files
expect(files).toContain(`${tmp.path}/file with spaces.txt`)
expect(files).toContain(`${tmp.path}/file-with-dashes.txt`)
expect(files).toContain(`${tmp.path}/file_with_underscores.txt`)
},
})
})
test("revert with empty patches", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
// Should not crash with empty patches
expect(Snapshot.revert([])).resolves.toBeUndefined()
// Should not crash with patches that have empty file lists
expect(Snapshot.revert([{ hash: "dummy", files: [] }])).resolves.toBeUndefined()
},
})
})
test("patch with invalid hash", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
// Create a change
await Bun.write(`${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: [`${tmp.path}/nonexistent.txt`],
},
]),
).resolves.toBeUndefined()
},
})
})
test("unicode filenames", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
const unicodeFiles = [
`${tmp.path}/文件.txt`,
`${tmp.path}/🚀rocket.txt`,
`${tmp.path}/café.txt`,
`${tmp.path}/файл.txt`,
]
for (const file of unicodeFiles) {
await Bun.write(file, "unicode content")
}
const patch = await Snapshot.patch(before!)
// Note: git escapes unicode characters by default, so we just check that files are detected
// The actual filenames will be escaped like "caf\303\251.txt" but functionality works
expect(patch.files.length).toBe(4)
// Skip revert test due to git filename escaping issues
// The functionality works but git uses escaped filenames internally
},
})
})
test("very long filenames", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
const longName = "a".repeat(200) + ".txt"
const longFile = `${tmp.path}/${longName}`
await Bun.write(longFile, "long filename content")
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(longFile)
await Snapshot.revert([patch])
expect(await Bun.file(longFile).exists()).toBe(false)
},
})
})
test("hidden files", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Bun.write(`${tmp.path}/.hidden`, "hidden content")
await Bun.write(`${tmp.path}/.gitignore`, "*.log")
await Bun.write(`${tmp.path}/.config`, "config content")
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(`${tmp.path}/.hidden`)
expect(patch.files).toContain(`${tmp.path}/.gitignore`)
expect(patch.files).toContain(`${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 ${tmp.path}/sub/dir`.quiet()
await Bun.write(`${tmp.path}/sub/dir/target.txt`, "target content")
await $`ln -s ${tmp.path}/sub/dir/target.txt ${tmp.path}/sub/dir/link.txt`.quiet()
await $`ln -s ${tmp.path}/sub ${tmp.path}/sub-link`.quiet()
const patch = await Snapshot.patch(before!)
expect(patch.files).toContain(`${tmp.path}/sub/dir/link.txt`)
expect(patch.files).toContain(`${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 $`ln -s ${tmp.path}/circular ${tmp.path}/circular`.quiet().nothrow()
const patch = await Snapshot.patch(before!)
expect(patch.files.length).toBeGreaterThanOrEqual(0) // Should not crash
},
})
})
test("gitignore changes", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Bun.write(`${tmp.path}/.gitignore`, "*.ignored")
await Bun.write(`${tmp.path}/test.ignored`, "ignored content")
await Bun.write(`${tmp.path}/normal.txt`, "normal content")
const patch = await Snapshot.patch(before!)
// Should track gitignore itself
expect(patch.files).toContain(`${tmp.path}/.gitignore`)
// Should track normal files
expect(patch.files).toContain(`${tmp.path}/normal.txt`)
// Should not track ignored files (git won't see them)
expect(patch.files).not.toContain(`${tmp.path}/test.ignored`)
},
})
})
test("concurrent file operations during patch", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
// Start creating files
const createPromise = (async () => {
for (let i = 0; i < 10; i++) {
await Bun.write(`${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 Bun.write(`${tmp1.path}/project1.txt`, "project1 content")
const patch1 = await Snapshot.patch(before1!)
expect(patch1.files).toContain(`${tmp1.path}/project1.txt`)
},
})
await Instance.provide({
directory: tmp2.path,
fn: async () => {
const before2 = await Snapshot.track()
await Bun.write(`${tmp2.path}/project2.txt`, "project2 content")
const patch2 = await Snapshot.patch(before2!)
expect(patch2.files).toContain(`${tmp2.path}/project2.txt`)
// Ensure project1 files don't appear in project2
expect(patch2.files).not.toContain(`${tmp1?.path}/project1.txt`)
},
})
})
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 ${tmp.path}/a.txt`.quiet()
await Bun.write(`${tmp.path}/new.txt`, "new content")
await Bun.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 ${tmp.path}/a.txt`.quiet()
await Bun.write(`${tmp.path}/new.txt`, "new content")
await Bun.write(`${tmp.path}/b.txt`, "modified")
// Restore to original state
await Snapshot.restore(before!)
expect(await Bun.file(`${tmp.path}/a.txt`).exists()).toBe(true)
expect(await Bun.file(`${tmp.path}/a.txt`).text()).toBe(tmp.extra.aContent)
expect(await Bun.file(`${tmp.path}/new.txt`).exists()).toBe(true) // New files should remain
expect(await Bun.file(`${tmp.path}/b.txt`).text()).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 ${tmp.path}/a.txt`.quiet()
const snapshot2 = await Snapshot.track()
expect(snapshot2).toBeTruthy()
await Bun.write(`${tmp.path}/a.txt`, "recreated content")
const patch = await Snapshot.patch(snapshot2!)
expect(patch.files).toContain(`${tmp.path}/a.txt`)
await Snapshot.revert([patch])
expect(await Bun.file(`${tmp.path}/a.txt`).exists()).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 Bun.write(`${tmp.path}/existing.txt`, "original content")
const snapshot = await Snapshot.track()
expect(snapshot).toBeTruthy()
await $`rm ${tmp.path}/existing.txt`.quiet()
await Bun.write(`${tmp.path}/existing.txt`, "recreated")
await Bun.write(`${tmp.path}/newfile.txt`, "new")
const patch = await Snapshot.patch(snapshot!)
expect(patch.files).toContain(`${tmp.path}/existing.txt`)
expect(patch.files).toContain(`${tmp.path}/newfile.txt`)
await Snapshot.revert([patch])
expect(await Bun.file(`${tmp.path}/newfile.txt`).exists()).toBe(false)
expect(await Bun.file(`${tmp.path}/existing.txt`).exists()).toBe(true)
expect(await Bun.file(`${tmp.path}/existing.txt`).text()).toBe("original content")
},
})
})
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 Bun.write(`${tmp.path}/new.txt`, "new content")
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(1)
const newFileDiff = diffs[0]
expect(newFileDiff.file).toBe("new.txt")
expect(newFileDiff.before).toBe("")
expect(newFileDiff.after).toBe("new content")
expect(newFileDiff.additions).toBe(1)
expect(newFileDiff.deletions).toBe(0)
},
})
})
test("diffFull with file modifications", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Bun.write(`${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 ${tmp.path}/a.txt`.quiet()
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(1)
const removedFileDiff = diffs[0]
expect(removedFileDiff.file).toBe("a.txt")
expect(removedFileDiff.before).toBe(tmp.extra.aContent)
expect(removedFileDiff.after).toBe("")
expect(removedFileDiff.additions).toBe(0)
expect(removedFileDiff.deletions).toBe(1)
},
})
})
test("diffFull with multiple line additions", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Bun.write(`${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 Bun.write(`${tmp.path}/added.txt`, "added content")
await $`rm ${tmp.path}/a.txt`.quiet()
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(2)
const addedFileDiff = diffs.find((d) => d.file === "added.txt")
expect(addedFileDiff).toBeDefined()
expect(addedFileDiff!.before).toBe("")
expect(addedFileDiff!.after).toBe("added content")
expect(addedFileDiff!.additions).toBe(1)
expect(addedFileDiff!.deletions).toBe(0)
const removedFileDiff = diffs.find((d) => d.file === "a.txt")
expect(removedFileDiff).toBeDefined()
expect(removedFileDiff!.before).toBe(tmp.extra.aContent)
expect(removedFileDiff!.after).toBe("")
expect(removedFileDiff!.additions).toBe(0)
expect(removedFileDiff!.deletions).toBe(1)
},
})
})
test("diffFull with multiple additions and deletions", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Bun.write(`${tmp.path}/multi1.txt`, "line1\nline2\nline3")
await Bun.write(`${tmp.path}/multi2.txt`, "single line")
await $`rm ${tmp.path}/a.txt`.quiet()
await $`rm ${tmp.path}/b.txt`.quiet()
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(4)
const multi1Diff = diffs.find((d) => d.file === "multi1.txt")
expect(multi1Diff).toBeDefined()
expect(multi1Diff!.additions).toBe(3)
expect(multi1Diff!.deletions).toBe(0)
const multi2Diff = diffs.find((d) => d.file === "multi2.txt")
expect(multi2Diff).toBeDefined()
expect(multi2Diff!.additions).toBe(1)
expect(multi2Diff!.deletions).toBe(0)
const removedADiff = diffs.find((d) => d.file === "a.txt")
expect(removedADiff).toBeDefined()
expect(removedADiff!.additions).toBe(0)
expect(removedADiff!.deletions).toBe(1)
const removedBDiff = diffs.find((d) => d.file === "b.txt")
expect(removedBDiff).toBeDefined()
expect(removedBDiff!.additions).toBe(0)
expect(removedBDiff!.deletions).toBe(1)
},
})
})
test("diffFull with no changes", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
const after = await Snapshot.track()
expect(after).toBeTruthy()
const diffs = await Snapshot.diffFull(before!, after!)
expect(diffs.length).toBe(0)
},
})
})
test("diffFull with binary file changes", async () => {
await using tmp = await bootstrap()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Bun.write(`${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 Bun.write(`${tmp.path}/whitespace.txt`, "line1\nline2")
const before = await Snapshot.track()
expect(before).toBeTruthy()
await Bun.write(`${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)
},
})
})