feat: create app and api projects.

api/test/harness/app.dart

@@ -0,0 +1,38 @@
+import 'package:dde_gesture_manager/dde_gesture_manager.dart';
+import 'package:conduit_test/conduit_test.dart';
+
+export 'package:dde_gesture_manager/dde_gesture_manager.dart';
+export 'package:conduit_test/conduit_test.dart';
+export 'package:test/test.dart';
+export 'package:conduit/conduit.dart';
+
+/// A testing harness for dde_gesture_manager.
+///
+/// A harness for testing an conduit application. Example test file:
+///
+///         void main() {
+///           Harness harness = Harness()..install();
+///
+///           test("GET /path returns 200", () async {
+///             final response = await harness.agent.get("/path");
+///             expectResponse(response, 200);
+///           });
+///         }
+///
+class Harness extends TestHarness<DdeGestureManagerChannel> with TestHarnessORMMixin {
+  @override
+  ManagedContext? get context => channel?.context;
+
+  @override
+  Future onSetUp() async {
+    await resetData();
+  }
+
+  @override
+  Future onTearDown() async {}
+
+  @override
+  Future seed() async {
+    // restore any static data. called by resetData.
+  }
+}

api/test/simple_controller_test.dart

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+import 'harness/app.dart';
+
+Future main() async {
+  final harness = Harness()..install();
+
+  tearDown(() async {
+    await harness.resetData();
+  });
+
+  test("POST /model", () async {
+    final response = await harness.agent!.post("/model", body: {"name": "Bob"});
+    expect(
+        response,
+        hasResponse(200,
+            body: {"id": isNotNull, "name": "Bob", "createdAt": isTimestamp}));
+  });
+
+  test("GET /model/:id returns previously created object", () async {
+    var response = await harness.agent!.post("/model", body: {"name": "Bob"});
+
+    final createdObject = response?.body.as();
+    response =
+        await harness.agent!.request("/model/${createdObject["id"]}").get();
+    expect(
+        response,
+        hasResponse(200, body: {
+          "id": createdObject["id"],
+          "name": createdObject["name"],
+          "createdAt": createdObject["createdAt"]
+        }));
+  });
+}