diff --git a/src/test/java/com/learning/yasminishop/service/CategoryServiceTest.java b/src/test/java/com/learning/yasminishop/service/CategoryServiceTest.java
new file mode 100644
index 0000000..6f8b421
--- /dev/null
+++ b/src/test/java/com/learning/yasminishop/service/CategoryServiceTest.java
@@ -0,0 +1,174 @@
+package com.learning.yasminishop.service;
+
+import com.learning.yasminishop.category.CategoryRepository;
+import com.learning.yasminishop.category.CategoryService;
+import com.learning.yasminishop.category.dto.request.CategoryCreation;
+import com.learning.yasminishop.category.dto.request.CategoryUpdate;
+import com.learning.yasminishop.category.dto.response.CategoryResponse;
+import com.learning.yasminishop.common.entity.Category;
+import lombok.extern.slf4j.Slf4j;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.security.test.context.support.WithMockUser;
+import org.springframework.test.context.TestPropertySource;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.Set;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@SpringBootTest
+@Slf4j
+@TestPropertySource("/test.properties")
+class CategoryServiceTest {
+
+    @Autowired
+    private CategoryService categoryService;
+
+    @MockBean
+    private CategoryRepository categoryRepository;
+
+    private CategoryCreation categoryCreation;
+
+    private Category category;
+    private CategoryUpdate categoryUpdate;
+
+    @BeforeEach
+    void setUp() {
+
+        categoryCreation = CategoryCreation.builder()
+                .name("Category Create")
+                .description("Category create description")
+                .slug("category-create")
+                .build();
+
+        category = Category.builder()
+                .id("cate1")
+                .name("Category 1")
+                .description("Category 1 description")
+                .slug("category-1")
+                .isAvailable(true)
+                .products(Set.of())
+                .build();
+
+        categoryUpdate = CategoryUpdate.builder()
+                .name("Category update")
+                .description("Category 1 update description")
+                .slug("category-1")
+                .isAvailable(true)
+                .build();
+
+    }
+
+    @Test
+    @WithMockUser(username = "admin@test.com", roles = {"ADMIN"})
+    void createCategory_validRequest_success() {
+        // GIVEN
+        when(categoryRepository.existsBySlug(categoryCreation.getSlug())).thenReturn(false);
+        when(categoryRepository.save(any(Category.class))).thenReturn(category);
+
+        // WHEN
+        CategoryResponse response = categoryService.create(categoryCreation);
+
+        // THEN
+        assertThat(response).isNotNull()
+                .hasFieldOrPropertyWithValue("name", "Category 1")
+                .hasFieldOrPropertyWithValue("description", "Category 1 description")
+                .hasFieldOrPropertyWithValue("slug", "category-1");
+    }
+
+    @Test
+    void getAllCategories_validRequest_success() {
+        // GIVEN
+        when(categoryRepository.findAllByIsAvailable(true)).thenReturn(List.of(category));
+
+        // WHEN
+        List<CategoryResponse> response = categoryService.getAllCategories();
+
+        // THEN
+        assertThat(response).isNotNull()
+                .hasSize(1)
+                .first()
+                .hasFieldOrPropertyWithValue("name", "Category 1")
+                .hasFieldOrPropertyWithValue("description", "Category 1 description")
+                .hasFieldOrPropertyWithValue("slug", "category-1");
+    }
+
+    @Test
+    void getBySlug_validRequest_success() {
+        // GIVEN
+        when(categoryRepository.findBySlug("category-1")).thenReturn(Optional.of(category));
+
+        // WHEN
+        CategoryResponse response = categoryService.getBySlug("category-1");
+
+        // THEN
+        assertThat(response).isNotNull()
+                .hasFieldOrPropertyWithValue("name", "Category 1")
+                .hasFieldOrPropertyWithValue("description", "Category 1 description")
+                .hasFieldOrPropertyWithValue("slug", "category-1");
+    }
+    @Test
+    @WithMockUser(username = "admin@test.com", roles = {"ADMIN"})
+    void getCategory_validRequest_success() {
+        // GIVEN
+        when(categoryRepository.findById("cate1")).thenReturn(Optional.of(category));
+
+        // WHEN
+        var response = categoryService.getCategory("cate1");
+
+        // THEN
+        assertThat(response).isNotNull()
+                .hasFieldOrPropertyWithValue("name", "Category 1")
+                .hasFieldOrPropertyWithValue("description", "Category 1 description")
+                .hasFieldOrPropertyWithValue("slug", "category-1");
+    }
+
+    @Test
+    @WithMockUser(username = "admin@test.com", roles = {"ADMIN"})
+    void delete_validRequest_success() {
+        // GIVEN
+        when(categoryRepository.findAllById(List.of("cate1"))).thenReturn(List.of(category));
+
+        // WHEN
+        categoryService.delete(List.of("cate1"));
+
+        // THEN
+        verify(categoryRepository).deleteAll(List.of(category));
+    }
+
+    @Test
+    @WithMockUser(username = "admin@test.com", roles = {"ADMIN"})
+    void toggleAvailability_validRequest_success() {
+        // GIVEN
+        when(categoryRepository.findAllById(List.of("cate1"))).thenReturn(List.of(category));
+
+        // WHEN
+        categoryService.toggleAvailability(List.of("cate1"));
+
+        // THEN
+        verify(categoryRepository).saveAll(List.of(category));
+    }
+
+    @Test
+    @WithMockUser(username = "admin@test.com", roles = {"ADMIN"})
+    void update_validRequest_success() {
+        // GIVEN
+        when(categoryRepository.findById("cate1")).thenReturn(Optional.of(category));
+        when(categoryRepository.save(any(Category.class))).thenReturn(category);
+
+        // WHEN
+        var response = categoryService.update("cate1", categoryUpdate);
+
+        // THEN
+        assertThat(response).isNotNull()
+                .hasFieldOrPropertyWithValue("name", "Category update");
+    }
+}