create city repository and service

src/test/kotlin/com/example/demo/services/CityServiceImplTest.kt

@@ -0,0 +1,46 @@
+package com.example.demo.services
+
+import com.example.demo.BaseFeatureTest
+import com.example.demo.models.City
+import com.example.demo.provider.CityRepository
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.test.context.ContextConfiguration
+import kotlin.test.*
+
+@ContextConfiguration(classes = [CityRepository::class, CityServiceImpl::class])
+class CityServiceImplTest: BaseFeatureTest() {
+    @Autowired
+    private lateinit var cityRepository: CityRepository
+    @Autowired
+    private lateinit var cityServiceImpl: CityServiceImpl
+
+    @Test
+    fun createFindDelete_success() {
+        val name = "Some city"
+        var city: City? = null
+
+        try {
+            city = cityServiceImpl.create(name = name)
+            assertNotNull(city)
+            assertNotNull(city.id)
+            assertEquals(name, city.name)
+
+            val dbCity = cityServiceImpl.findByGuid(city.guid)
+            assertNotNull(dbCity)
+            assertEquals(city.id, dbCity.id)
+            assertFalse(dbCity.isDeleted())
+
+            val deletedCity = cityServiceImpl.delete(city.guid)
+            assertNotNull(deletedCity)
+            assertEquals(city.id, deletedCity.id)
+            assertNotNull(deletedCity.deletedAt)
+            assertTrue(deletedCity.isDeleted())
+        } finally {
+            val id = city?.id
+            if (id != null) {
+                cityRepository.deleteById(id)
+            }
+
+        }
+    }
+}