feat(core): add managed repository cache (#30408)

packages/core/test/git.test.ts

@@ -0,0 +1,66 @@
+import { describe, expect } from "bun:test"
+import fs from "fs/promises"
+import path from "path"
+import { Effect } from "effect"
+import { Git } from "@opencode-ai/core/git"
+import { branch, commit, gitRemote } from "./fixture/git"
+import { tmpdir } from "./fixture/tmpdir"
+import { testEffect } from "./lib/effect"
+
+const it = testEffect(Git.defaultLayer)
+
+describe("Git", () => {
+  it.live("clones a remote and reads checkout metadata", () =>
+    withRemote((fixture) =>
+      Effect.gen(function* () {
+        const git = yield* Git.Service
+        const target = path.join(fixture.root, "checkout")
+        const result = yield* git.clone({ remote: fixture.remote, target })
+
+        expect(result.exitCode).toBe(0)
+        expect(yield* git.origin(target)).toBe(fixture.remote)
+        expect(yield* git.head(target)).toBeString()
+        expect(yield* git.branch(target)).toBe("main")
+        expect(yield* git.remoteHead(target)).toBe("origin/main")
+        expect(yield* read(path.join(target, "README.md"))).toBe("one\n")
+      }),
+    ),
+  )
+
+  it.live("fetches, checks out, and resets remote changes", () =>
+    withRemote((fixture) =>
+      Effect.gen(function* () {
+        const git = yield* Git.Service
+        const target = path.join(fixture.root, "checkout")
+        yield* git.clone({ remote: fixture.remote, target })
+
+        yield* Effect.promise(() => commit(fixture.source, "two\n", "second"))
+        expect((yield* git.fetch(target)).exitCode).toBe(0)
+        expect((yield* git.reset(target, "origin/main")).exitCode).toBe(0)
+        expect(yield* read(path.join(target, "README.md"))).toBe("two\n")
+
+        yield* Effect.promise(() => branch(fixture.source, "feature/docs", "feature\n"))
+        expect((yield* git.fetchBranch(target, "feature/docs")).exitCode).toBe(0)
+        expect((yield* git.checkout(target, "feature/docs")).exitCode).toBe(0)
+        expect((yield* git.reset(target, "origin/feature/docs")).exitCode).toBe(0)
+        expect(yield* git.branch(target)).toBe("feature/docs")
+        expect(yield* read(path.join(target, "README.md"))).toBe("feature\n")
+      }),
+    ),
+  )
+})
+
+function withRemote<A, E, R>(body: (fixture: Awaited<ReturnType<typeof gitRemote>>) => Effect.Effect<A, E, R>) {
+  return Effect.acquireUseRelease(
+    Effect.promise(async () => {
+      const root = await tmpdir()
+      return { root, fixture: await gitRemote(root.path) }
+    }),
+    (input) => body(input.fixture),
+    (input) => Effect.promise(() => input.root[Symbol.asyncDispose]()),
+  )
+}
+
+function read(file: string) {
+  return Effect.promise(() => fs.readFile(file, "utf8")).pipe(Effect.map((content) => content.replace(/\r\n/g, "\n")))
+}