1 files changed, 81 insertions, 0 deletions
diff --git a/packages/cli/src/message.test.ts b/packages/cli/src/message.test.ts
new file mode 100644
index 0000000..8d6d9e1
--- /dev/null
+++ b/packages/cli/src/message.test.ts
@@ -0,0 +1,81 @@
+import { describe, expect, it } from "vitest";
+import { buildChatRequest, composeMessage } from "./message.js";
+
+describe("composeMessage", () => {
+	it("returns text only", () => {
+		expect(composeMessage({ text: "hello" })).toBe("hello");
+	});
+
+	it("returns file only with neutral label", () => {
+		expect(composeMessage({ file: "foo.txt", fileContent: "contents" })).toBe(
+			"Attached file (foo.txt):\ncontents",
+		);
+	});
+
+	it("returns text + labeled file block", () => {
+		expect(composeMessage({ text: "check this", file: "a.ts", fileContent: "const x = 1;" })).toBe(
+			"check this\n\nAttached file (a.ts):\nconst x = 1;",
+		);
+	});
+
+	it("handles missing fileContent gracefully", () => {
+		expect(composeMessage({ file: "f.txt" })).toBe("Attached file (f.txt):\n");
+	});
+
+	it("uses basename for absolute paths", () => {
+		expect(composeMessage({ file: "/tmp/opencode/demo/note.txt", fileContent: "hello" })).toBe(
+			"Attached file (note.txt):\nhello",
+		);
+	});
+
+	it("handles empty input", () => {
+		expect(composeMessage({})).toBe("");
+	});
+});
+
+describe("buildChatRequest", () => {
+	it("maps fields correctly", () => {
+		const req = buildChatRequest(
+			{
+				modelName: "cred/model",
+				text: "hi",
+				showReasoning: false,
+			},
+			{ cwd: "/work", message: "hi" },
+		);
+		expect(req).toEqual({
+			message: "hi",
+			model: "cred/model",
+			cwd: "/work",
+		});
+	});
+
+	it("includes conversationId when provided", () => {
+		const req = buildChatRequest(
+			{
+				modelName: "m",
+				text: "x",
+				conversationId: "conv-123",
+				showReasoning: false,
+			},
+			{ cwd: "/work", message: "x" },
+		);
+		expect(req.conversationId).toBe("conv-123");
+	});
+
+	it("omits conversationId when not provided", () => {
+		const req = buildChatRequest(
+			{ modelName: "m", text: "x", showReasoning: false },
+			{ cwd: "/work", message: "x" },
+		);
+		expect(req).not.toHaveProperty("conversationId");
+	});
+
+	it("uses explicit cwd over context cwd", () => {
+		const req = buildChatRequest(
+			{ modelName: "m", text: "x", cwd: "/explicit", showReasoning: false },
+			{ cwd: "/default", message: "x" },
+		);
+		expect(req.cwd).toBe("/explicit");
+	});
+});