refactoring

Resolve #7779

packages/backend/src/services/chart/charts/classes/test.ts

@@ -0,0 +1,69 @@
+import autobind from 'autobind-decorator';
+import Chart, { Obj, DeepPartial } from '../../core';
+import { SchemaType } from '@/misc/schema';
+import { name, schema } from '../schemas/test';
+
+type TestLog = SchemaType<typeof schema>;
+
+export default class TestChart extends Chart<TestLog> {
+	public total = 0; // publicにするのはテストのため
+
+	constructor() {
+		super(name, schema);
+	}
+
+	@autobind
+	protected genNewLog(latest: TestLog): DeepPartial<TestLog> {
+		return {
+			foo: {
+				total: latest.foo.total,
+			},
+		};
+	}
+
+	@autobind
+	protected aggregate(logs: TestLog[]): TestLog {
+		return {
+			foo: {
+				total: logs[0].foo.total,
+				inc: logs.reduce((a, b) => a + b.foo.inc, 0),
+				dec: logs.reduce((a, b) => a + b.foo.dec, 0),
+			},
+		};
+	}
+
+	@autobind
+	protected async fetchActual(): Promise<DeepPartial<TestLog>> {
+		return {
+			foo: {
+				total: this.total,
+			},
+		};
+	}
+
+	@autobind
+	public async increment() {
+		const update: Obj = {};
+
+		update.total = 1;
+		update.inc = 1;
+		this.total++;
+
+		await this.inc({
+			foo: update
+		});
+	}
+
+	@autobind
+	public async decrement() {
+		const update: Obj = {};
+
+		update.total = -1;
+		update.dec = 1;
+		this.total--;
+
+		await this.inc({
+			foo: update
+		});
+	}
+}