fix: appVariant 대소문자 구분 없이 처리

src/main/java/devkor/com/teamcback/domain/notification/config/NotificationWebConfig.java

@@ -0,0 +1,15 @@
+package devkor.com.teamcback.domain.notification.config;
+
+import devkor.com.teamcback.domain.notification.converter.AppVariantConverter;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.format.FormatterRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class NotificationWebConfig implements WebMvcConfigurer {
+
+    @Override
+    public void addFormatters(FormatterRegistry registry) {
+        registry.addConverter(new AppVariantConverter());
+    }
+}

src/main/java/devkor/com/teamcback/domain/notification/converter/AppVariantConverter.java

@@ -0,0 +1,16 @@
+package devkor.com.teamcback.domain.notification.converter;
+
+import devkor.com.teamcback.domain.notification.entity.type.AppVariant;
+import org.springframework.core.convert.converter.Converter;
+
+public class AppVariantConverter implements Converter<String, AppVariant> {
+
+    @Override
+    public AppVariant convert(String source) {
+        if (source == null || source.isEmpty()) {
+            return null;
+        }
+
+        return AppVariant.from(source);
+    }
+}

src/test/java/devkor/com/teamcback/domain/notification/controller/AdminNotificationControllerTest.java

@@ -1,19 +1,27 @@
 package devkor.com.teamcback.domain.notification.controller;
 
 import devkor.com.teamcback.domain.notification.dto.response.AdminPushEventFlagRes;
+import devkor.com.teamcback.domain.notification.converter.AppVariantConverter;
+import devkor.com.teamcback.domain.notification.entity.type.AppVariant;
 import devkor.com.teamcback.domain.notification.entity.type.PushEventType;
 import devkor.com.teamcback.domain.notification.service.AdminNotificationService;
 import devkor.com.teamcback.domain.notification.service.PushEventFlagService;
 import java.util.List;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+import org.springframework.data.domain.PageImpl;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.format.support.DefaultFormattingConversionService;
 import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
 import org.springframework.http.MediaType;
 import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.setup.MockMvcBuilders;
 
+import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.patch;
@@ -37,7 +45,12 @@ void setUp() {
                 adminNotificationService,
                 pushEventFlagService
         );
-        mockMvc = MockMvcBuilders.standaloneSetup(controller).build();
+        DefaultFormattingConversionService conversionService = new DefaultFormattingConversionService();
+        conversionService.addConverter(new AppVariantConverter());
+
+        mockMvc = MockMvcBuilders.standaloneSetup(controller)
+                .setConversionService(conversionService)
+                .build();
     }
 
     @Test
@@ -63,4 +76,45 @@ void updatedEventFlagIsReflectedInAdminApiQueryResult() throws Exception {
                 .andExpect(jsonPath("$.data[1].eventType").value("REPORT"))
                 .andExpect(jsonPath("$.data[1].enabled").value(true));
     }
+
+    @ParameterizedTest
+    @CsvSource({
+            "dev,DEV",
+            "DEV,DEV",
+            "preview,PREVIEW",
+            "PREVIEW,PREVIEW",
+            "production,PRODUCTION",
+            "PRODUCTION,PRODUCTION"
+    })
+    void searchInstallationsBindsAppVariantIgnoringCase(String requestValue, AppVariant expected) throws Exception {
+        when(adminNotificationService.searchInstallations(1L, null, expected))
+                .thenReturn(List.of());
+
+        mockMvc.perform(get("/api/admin/notifications/installations/search")
+                        .param("userId", "1")
+                        .param("appVariant", requestValue))
+                .andExpect(status().isOk());
+
+        verify(adminNotificationService).searchInstallations(1L, null, expected);
+    }
+
+    @Test
+    void getDispatchesBindsAppVariantIgnoringCase() throws Exception {
+        when(adminNotificationService.getDispatches(1, 20, AppVariant.PREVIEW, null))
+                .thenReturn(new PageImpl<>(List.of(), PageRequest.of(0, 20), 0));
+
+        mockMvc.perform(get("/api/admin/notifications/dispatches")
+                        .param("appVariant", "preview"))
+                .andExpect(status().isOk());
+
+        verify(adminNotificationService).getDispatches(1, 20, AppVariant.PREVIEW, null);
+    }
+
+    @Test
+    void invalidAppVariantReturnsBadRequest() throws Exception {
+        mockMvc.perform(get("/api/admin/notifications/installations/search")
+                        .param("userId", "1")
+                        .param("appVariant", "invalid"))
+                .andExpect(status().isBadRequest());
+    }
 }