✅ Adding tests.

src/test/java/me/zhyd/oauth/request/AuthWeChatMpRequestTest.java

+package me.zhyd.oauth.request;
+
+import me.zhyd.oauth.config.AuthConfig;
+import me.zhyd.oauth.utils.AuthStateUtils;
+import org.junit.Test;
+
+public class AuthWeChatMpRequestTest {
+
+    @Test
+    public void authorize() {
+
+        AuthRequest request = new AuthWeChatMpRequest(AuthConfig.builder()
+            .clientId("a")
+            .clientSecret("a")
+            .redirectUri("https://www.justauth.cn")
+            .build());
+        System.out.println(request.authorize(AuthStateUtils.createState()));
+    }
+}