test: add OAuth2 REST API tests

komga/src/test/kotlin/org/gotson/komga/interfaces/api/rest/OAuth2ControllerTest.kt

@@ -0,0 +1,30 @@
+package org.gotson.komga.interfaces.api.rest
+
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.extension.ExtendWith
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.security.test.context.support.WithAnonymousUser
+import org.springframework.test.context.ActiveProfiles
+import org.springframework.test.context.junit.jupiter.SpringExtension
+import org.springframework.test.web.servlet.MockMvc
+import org.springframework.test.web.servlet.get
+
+@ExtendWith(SpringExtension::class)
+@SpringBootTest
+@AutoConfigureMockMvc(printOnlyOnFailure = false)
+@ActiveProfiles("test")
+class OAuth2ControllerTest(
+  @Autowired private val mockMvc: MockMvc,
+) {
+
+  @Test
+  @WithAnonymousUser
+  fun `given anonymous user when getting oauth2 providers then returns OK`() {
+    mockMvc.get("/api/v1/oauth2/providers")
+      .andExpect {
+        status { isOk() }
+      }
+  }
+}