feat: set beta version

tests/store/create-snapshot.ts

@@ -0,0 +1,91 @@
+import { assertEquals, assertNotEquals, assertObjectMatch } from "@std/assert";
+import { it } from "@std/testing/bdd";
+import { nanoid } from "nanoid";
+
+import type { EventStoreFactory } from "../mocks/events.ts";
+import { userReducer } from "../mocks/user-reducer.ts";
+import { describe } from "../utilities/describe.ts";
+
+export default describe<EventStoreFactory>(".createSnapshot", (getEventStore) => {
+  it("should create a new snapshot", async () => {
+    const { store } = await getEventStore();
+    const stream = nanoid();
+
+    await store.pushEvent(
+      store.event({
+        stream,
+        type: "user:created",
+        data: {
+          name: {
+            given: "John",
+            family: "Doe",
+          },
+          email: "john.doe@fixture.none",
+        },
+        meta: {
+          auditor: "super",
+        },
+      }),
+    );
+
+    await store.pushEvent(
+      store.event({
+        stream,
+        type: "user:email-set",
+        data: "jane.doe@fixture.none",
+        meta: {
+          auditor: "super",
+        },
+      }),
+    );
+
+    await store.pushEvent(
+      store.event({
+        stream,
+        type: "user:deactivated",
+        meta: {
+          auditor: "super",
+        },
+      }),
+    );
+
+    await store.createSnapshot({ name: "user", stream, reducer: userReducer });
+
+    const snapshot = await store.snapshots.getByStream("user", stream);
+
+    assertNotEquals(snapshot, undefined);
+    assertObjectMatch(snapshot!.state, {
+      name: {
+        given: "John",
+        family: "Doe",
+      },
+      email: "jane.doe@fixture.none",
+      active: false,
+    });
+
+    await store.pushEvent(
+      store.event({
+        stream,
+        type: "user:activated",
+        meta: {
+          auditor: "super",
+        },
+      }),
+    );
+
+    const events = await store.events.getByStream(stream, { cursor: snapshot!.cursor });
+
+    assertEquals(events.length, 1);
+
+    const state = await store.reduce({ name: "user", stream, reducer: userReducer });
+
+    assertObjectMatch(state!, {
+      name: {
+        given: "John",
+        family: "Doe",
+      },
+      email: "jane.doe@fixture.none",
+      active: true,
+    });
+  });
+});