add custom auth strategy test

app/__test__/auth/strategies/custom.test.ts

@@ -0,0 +1,54 @@
+import { AuthStrategy, registries } from "bknd";
+import { describe, it, expect } from "bun:test";
+import { createApp } from "core/test/utils";
+import { s } from "bknd/utils";
+import { Hono } from "hono";
+
+const customStrategySchema = s.object({
+   name: s.string(),
+});
+type CustomStrategyOptions = s.Static<typeof customStrategySchema>;
+
+class CustomStrategy extends AuthStrategy<typeof customStrategySchema> {
+   constructor(config: Partial<CustomStrategyOptions> = {}) {
+      super(config as any, "custom", "custom", "form");
+   }
+   getSchema() {
+      return customStrategySchema;
+   }
+
+   getController() {
+      return new Hono()
+         .post("/login", async (c) => {
+            return c.json({
+               message: "Hello, world!",
+            });
+         })
+         .post("/register", async (c) => {
+            return c.json({
+               message: "Hello, world!",
+            });
+         });
+   }
+}
+
+describe("custom auth strategy", () => {
+   it("should be registered", async () => {
+      registries.auth.register("custom", CustomStrategy);
+
+      const app = createApp({
+         initialConfig: {
+            auth: {
+               enabled: true,
+            },
+         },
+      });
+      await app.build();
+
+      const strategies = app
+         .getSchema()
+         .auth.properties.strategies.additionalProperties.anyOf.map((s) => s.properties.type.const);
+
+      expect(strategies).toContain("custom");
+   });
+});