test(runtime): add unit tests for terminal runtime helpers

dwc1997 · dwc1997 · commit 7aa3cbcff208 · 2026-06-25T18:08:42.000+08:00
Add unit tests for createNonExitingRuntime and writeRuntimeJson
functions in src/runtime.ts to verify runtime behavior.

Tests cover:
- createNonExitingRuntime returns runtime with exit function
- exit function throws error with code
- writeRuntimeJson writes JSON using writeJson when available
- writeRuntimeJson writes JSON using log when writeJson not available
- uses custom space parameter
- handles zero space parameter
diff --git a/src/runtime.test.ts b/src/runtime.test.ts
@@ -0,0 +1,76 @@
+// Tests for terminal runtime helpers.
+import { describe, expect, it, vi } from "vitest";
+
+// Mock dependencies
+vi.mock("../packages/terminal-core/src/progress-line.js", () => ({
+  clearActiveProgressLine: vi.fn(),
+}));
+
+vi.mock("../packages/terminal-core/src/restore.js", () => ({
+  restoreTerminalState: vi.fn(),
+}));
+
+import { createNonExitingRuntime, writeRuntimeJson } from "./runtime.js";
+
+describe("createNonExitingRuntime", () => {
+  it("returns runtime with exit function", () => {
+    const runtime = createNonExitingRuntime();
+    expect(typeof runtime.exit).toBe("function");
+  });
+
+  it("exit function throws error", () => {
+    const runtime = createNonExitingRuntime();
+    expect(() => runtime.exit(1)).toThrow("exit 1");
+  });
+
+  it("exit function includes code in error message", () => {
+    const runtime = createNonExitingRuntime();
+    expect(() => runtime.exit(42)).toThrow("exit 42");
+  });
+});
+
+describe("writeRuntimeJson", () => {
+  it("writes JSON using writeJson when available", () => {
+    const runtime = {
+      log: vi.fn(),
+      error: vi.fn(),
+      exit: vi.fn(),
+      writeStdout: vi.fn(),
+      writeJson: vi.fn(),
+    };
+    writeRuntimeJson(runtime, { key: "value" });
+    expect(runtime.writeJson).toHaveBeenCalledWith({ key: "value" }, 2);
+  });
+
+  it("writes JSON using log when writeJson not available", () => {
+    const runtime = {
+      log: vi.fn(),
+      error: vi.fn(),
+      exit: vi.fn(),
+    };
+    writeRuntimeJson(runtime, { key: "value" });
+    expect(runtime.log).toHaveBeenCalled();
+  });
+
+  it("uses custom space parameter", () => {
+    const runtime = {
+      log: vi.fn(),
+      error: vi.fn(),
+      exit: vi.fn(),
+      writeStdout: vi.fn(),
+      writeJson: vi.fn(),
+    };
+    writeRuntimeJson(runtime, { key: "value" }, 4);
+    expect(runtime.writeJson).toHaveBeenCalledWith({ key: "value" }, 4);
+  });
+
+  it("handles zero space parameter", () => {
+    const runtime = {
+      log: vi.fn(),
+      error: vi.fn(),
+      exit: vi.fn(),
+    };
+    writeRuntimeJson(runtime, { key: "value" }, 0);
+    expect(runtime.log).toHaveBeenCalledWith('{"key":"value"}');
+  });
+});
