Adds integration test for rate limiter

src/test/kotlin/de/paulbrejla/holidays/rest/impl/HolidayWsV1ImplITest.kt

@@ -0,0 +1,46 @@
+package de.paulbrejla.holidays.rest.impl
+
+import de.paulbrejla.holidays.application.api.HolidayService
+import de.paulbrejla.holidays.rest.api.HolidayWsV1
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.TestInstance
+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.autoconfigure.web.servlet.WebMvcTest
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.test.context.junit.jupiter.SpringExtension
+import org.springframework.test.web.servlet.MockMvc
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.status
+
+
+@AutoConfigureMockMvc
+@SpringBootTest
+@ExtendWith(
+    SpringExtension::class
+)
+@TestInstance(TestInstance.Lifecycle.PER_METHOD)
+class HolidayWsV1ImplITest {
+    @Autowired
+    lateinit var mvc: MockMvc
+
+    @Test
+    fun `api responds with a 429 if rate limit is reached after 10 requests`() {
+        repeat(11) { rep ->
+            mvc.perform(
+                MockMvcRequestBuilders
+                    .get("/api/v1/holidays/HB")
+            )
+                .andExpect {
+                    if (rep <= 10) {
+                        status().isOk
+                    } else {
+                        status().isTooManyRequests
+                    }
+                }
+        }
+    }
+
+}

src/test/kotlin/de/paulbrejla/holidays/rest/impl/HolidayWsV1ImplTest.kt

@@ -70,7 +70,6 @@ internal class HolidayWsV1ImplTest {
         // Then
         assertNotNull(holidays)
         assertEquals(expectedSize, holidays.size)
-
     }
 
 }

src/test/resources/application.yml

@@ -9,9 +9,13 @@ spring:
       enabled: false
       path: /h2-console
 server:
-  port: 80
+  port: ${SERVER_PORT:80}
 loader:
   source: filesystem
   remoteURL:
   branch: master
-  filePath:
+  filePath:
+rateLimit:
+  globalBucket:
+    id: ${RATE_LIMIT_GLOBAL_BUCKET_ID:global}
+    capacity: ${RATE_LIMIT_GLOBAL_BUCKET_CAPACITY:10}