feat: add more tests for tool built-ins (#5)

src/tests/tools/grep.test.ts

@@ -0,0 +1,59 @@
+import { afterEach, describe, expect, test } from "bun:test";
+import { grep } from "../../tools/impl/Grep";
+import { TestDirectory } from "../helpers/testFs";
+
+describe("Grep tool", () => {
+  let testDir: TestDirectory;
+
+  afterEach(() => {
+    testDir?.cleanup();
+  });
+
+  test("finds pattern in files (requires ripgrep)", async () => {
+    testDir = new TestDirectory();
+    testDir.createFile("test1.txt", "Hello World");
+    testDir.createFile("test2.txt", "Goodbye World");
+    testDir.createFile("test3.txt", "No match here");
+
+    try {
+      const result = await grep({
+        pattern: "World",
+        path: testDir.path,
+        output_mode: "files_with_matches",
+      });
+
+      expect(result.output).toContain("test1.txt");
+      expect(result.output).toContain("test2.txt");
+      expect(result.output).not.toContain("test3.txt");
+    } catch (error) {
+      // Ripgrep might not be available in test environment
+      if (error instanceof Error && error.message.includes("ENOENT")) {
+        console.log("Skipping grep test - ripgrep not available");
+      } else {
+        throw error;
+      }
+    }
+  });
+
+  test("case insensitive search with -i flag", async () => {
+    testDir = new TestDirectory();
+    testDir.createFile("test.txt", "Hello WORLD");
+
+    try {
+      const result = await grep({
+        pattern: "world",
+        path: testDir.path,
+        "-i": true,
+        output_mode: "content",
+      });
+
+      expect(result.output).toContain("WORLD");
+    } catch (error) {
+      if (error instanceof Error && error.message.includes("ENOENT")) {
+        console.log("Skipping grep test - ripgrep not available");
+      } else {
+        throw error;
+      }
+    }
+  });
+});