test(open-api): lock in requestBody for /phone-number/verify (#11208)

Co-authored-by: Taesu <bytaesu@gmail.com>

packages/better-auth/src/plugins/open-api/open-api.test.ts

@@ -4,6 +4,7 @@ import * as z from "zod";
 import { createAuthEndpoint } from "../../api";
 import { getTestInstance } from "../../test-utils/test-instance";
 import { emailOTP } from "../email-otp";
+import { phoneNumber } from "../phone-number";
 import { username } from "../username";
 import { openAPI } from ".";
 import type { OpenAPISchema, Path } from "./generator";
@@ -307,6 +308,17 @@ describe("open-api", async () => {
 			}),
 		],
 	});
+	const { auth: authWithPhoneNumber } = await getTestInstance({
+		plugins: [
+			phoneNumber({
+				sendOTP: async () => {},
+				signUpOnVerification: {
+					getTempEmail: (phone) => `${phone}@phone.example.com`,
+				},
+			}),
+			openAPI(),
+		],
+	});
 	const { auth: authWithNullableIntersection } = await getTestInstance({
 		plugins: [openAPI(), nullableIntersectionPlugin],
 	});
@@ -881,6 +893,47 @@ describe("open-api", async () => {
 		expect(signInEmailOTPSchema.additionalProperties).toEqual({});
 	});
 
+	it.for([
+		"/sign-in/phone-number",
+		"/phone-number/send-otp",
+		"/phone-number/request-password-reset",
+		"/phone-number/reset-password",
+	])("emits a request body for %s", async (path) => {
+		const schema = await authWithPhoneNumber.api.generateOpenAPISchema();
+		const paths = schema.paths as Record<string, Path>;
+
+		expect(paths[path]?.post?.requestBody).toBeDefined();
+	});
+
+	/**
+	 * @see https://github.com/better-auth/better-auth/issues/8122
+	 */
+	it("emits the phone-number verification request body", async () => {
+		const schema = await authWithPhoneNumber.api.generateOpenAPISchema();
+		const paths = schema.paths as Record<string, Path>;
+		const requestBody = getPostRequestBody(paths, "/phone-number/verify");
+		const requestBodySchema = requestBody.content["application/json"].schema;
+
+		expect(requestBody).toMatchObject({
+			required: true,
+			content: {
+				"application/json": {
+					schema: {
+						type: "object",
+						properties: {
+							phoneNumber: { type: "string" },
+							code: { type: "string" },
+							disableSession: { type: "boolean" },
+							updatePhoneNumber: { type: "boolean" },
+						},
+						required: ["phoneNumber", "code"],
+					},
+				},
+			},
+		});
+		expect(requestBodySchema.additionalProperties).toEqual({});
+	});
+
 	it("should keep plain email OTP request bodies as object schemas", async () => {
 		const schema = await authWithEmailOTP.api.generateOpenAPISchema();
 		const paths = schema.paths as Record<string, any>;