file-and-buffer-manager tests

Author: dlants

bun/context/file-and-buffer-manager.spec.ts

@@ -0,0 +1,120 @@
+import { withNvimClient } from "../test/preamble.ts";
+import { describe, expect, it } from "bun:test";
+import { BufferAndFileManager } from "./file-and-buffer-manager.ts";
+import path from "path";
+import fs from "fs";
+import { getCurrentBuffer, getcwd } from "../nvim/nvim.ts";
+import type { MessageId } from "../chat/message.ts";
+import type { Line } from "../nvim/buffer.ts";
+
+describe("Neovim Plugin Tests", () => {
+  it("basic rendering & update", async () => {
+    await withNvimClient(async (nvim) => {
+      const bufferAndFileManager = new BufferAndFileManager(nvim);
+      const cwd = await getcwd(nvim);
+
+      const absFilePath = path.resolve(cwd, "bun/test/fixtures/poem.txt");
+      {
+        const res = await bufferAndFileManager.getFileContents(
+          absFilePath,
+          1 as MessageId,
+        );
+
+        expect(res).toEqual({
+          status: "ok",
+          value: {
+            messageId: 1 as MessageId,
+            relFilePath: "bun/test/fixtures/poem.txt",
+            content: `\
+Moonlight whispers through the trees,
+Silver shadows dance with ease.
+Stars above like diamonds bright,
+Paint their stories in the night.
+`,
+          },
+        });
+      }
+
+      {
+        const res = await bufferAndFileManager.getFileContents(
+          absFilePath,
+          3 as MessageId,
+        );
+
+        expect(
+          res,
+          "when the content hasn't changed, we should return the initial message id",
+        ).toEqual({
+          status: "ok",
+          value: {
+            messageId: 1 as MessageId,
+            relFilePath: "bun/test/fixtures/poem.txt",
+            content: `\
+Moonlight whispers through the trees,
+Silver shadows dance with ease.
+Stars above like diamonds bright,
+Paint their stories in the night.
+`,
+          },
+        });
+      }
+
+      await touchFile(absFilePath);
+      {
+        const res = await bufferAndFileManager.getFileContents(
+          absFilePath,
+          5 as MessageId,
+        );
+
+        expect(
+          res,
+          "after the file is touched, we update the returned messageId",
+        ).toEqual({
+          status: "ok",
+          value: {
+            messageId: 5 as MessageId,
+            relFilePath: "bun/test/fixtures/poem.txt",
+            content: `\
+Moonlight whispers through the trees,
+Silver shadows dance with ease.
+Stars above like diamonds bright,
+Paint their stories in the night.
+`,
+          },
+        });
+      }
+
+      await nvim.call("nvim_exec2", [`edit ${absFilePath}`, {}]);
+      const buf = await getCurrentBuffer(nvim);
+      await buf.setLines({
+        start: 0,
+        end: -1,
+        lines: ["new content"] as Line[],
+      });
+
+      {
+        const res = await bufferAndFileManager.getFileContents(
+          absFilePath,
+          7 as MessageId,
+        );
+
+        expect(
+          res,
+          "after the file is loaded into a buffer, we load the buffer content",
+        ).toEqual({
+          status: "ok",
+          value: {
+            messageId: 7 as MessageId,
+            relFilePath: "bun/test/fixtures/poem.txt",
+            content: `new content`,
+          },
+        });
+      }
+    });
+  });
+});
+
+async function touchFile(filePath: string): Promise<void> {
+  const time = new Date();
+  await fs.promises.utimes(filePath, time, time);
+}