сделал тесты

src/test/java/ru/dima/weather/city/CityByIpResolverTest.java

@@ -13,7 +13,7 @@ class CityByIpResolverTest {
     @Test
     void mustReturnPlaintextCityFromIp() {
         var mockHttpRequester = Mockito.mock(HttpRequester.class);
-        var cityByIpResolver = new CityByIpResolver(mockHttpRequester);
+        var cityByIpResolver = new IpInfoService(mockHttpRequester);
         var randomCityName = UUID.randomUUID().toString();
 
         Mockito.when(mockHttpRequester.getString(Mockito.any())).thenReturn(randomCityName);

src/test/java/ru/dima/weather/city/IpProviderCLISelectorTest.java

@@ -0,0 +1,28 @@
+package ru.dima.weather.city;
+
+import org.junit.jupiter.api.Test;
+import ru.dima.weather.cli.CLIInputReader;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class IpProviderCLISelectorTest {
+    @Test
+    void testSelectIpProviderFromCLI(){
+        CLIInputReader cliInputReader = new CLIInputReader(System.in);
+        when(cliInputReader.readInteger()).thenReturn(1);
+
+        IpProvider ipProvider1 = mock();
+        when(ipProvider1.getName()).thenReturn("ubuy");
+
+        List<IpProvider> ipProviders = new ArrayList<>();
+        ipProviders.add(ipProvider1);
+
+        IpProviderCLISelector ipProviderCLISelector = new IpProviderCLISelector(cliInputReader, ipProviders);
+        assertEquals("ubuy", ipProviderCLISelector.selectIpProviderFromCLI());
+    }
+}

src/test/java/ru/dima/weather/city/IpProviderRegistryTest.java

@@ -0,0 +1,20 @@
+package ru.dima.weather.city;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class IpProviderRegistryTest {
+   @Test
+    void testRegisterWeatherProvider() {
+       IpProvider ipProvider = mock(IpProvider.class);
+       IpProviderRegistry ipProviderRegistry = new IpProviderRegistry();
+       List<IpProvider> registeredProviders = ipProviderRegistry.registerWeatherProvider(ipProvider);
+       assertEquals(1, registeredProviders.size());
+    }
+}