diff --git a/HopFrame.sln.DotSettings.user b/HopFrame.sln.DotSettings.user
index e5935b1..d71bdae 100644
--- a/HopFrame.sln.DotSettings.user
+++ b/HopFrame.sln.DotSettings.user
@@ -84,6 +84,16 @@
 	
 	
 	
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	
 	
 	
 	
diff --git a/docs/api/endpoints/group.md b/docs/api/endpoints/group.md
new file mode 100644
index 0000000..c2cebca
--- /dev/null
+++ b/docs/api/endpoints/group.md
@@ -0,0 +1,237 @@
+# Group Endpoints
+
+## Used Models
+- [Group](../../models.md#permissiongroup)
+
+## API Endpoint: GetGroups
+
+**Endpoint:** `GET /api/v1/groups`
+
+**Description:** Retrieves a list of all groups.
+
+**Authorization Required:** Yes
+
+**Required Permission:** `hopframe.admin.groups.read`
+
+**Parameters:** None
+
+**Response:**
+
+- **200 OK:** Returns a list of groups.
+  ```json
+  [
+    {
+      "Name": "string",
+      "IsDefaultGroup": "boolean",
+      "Description": "string",
+      "CreatedAt": "2023-12-23T00:00:00Z",
+      "Permissions": [
+        {
+          "Id": 1,
+          "PermissionName": "string",
+          "GrantedAt": "2023-12-23T00:00:00Z"
+        }
+      ]
+    }
+  ]
+  ```
+- **401 Unauthorized:** User is not authorized to access this endpoint.
+
+## API Endpoint: GetDefaultGroups
+
+**Endpoint:** `GET /api/v1/groups/default`
+
+**Description:** Retrieves a list of default groups.
+
+**Authorization Required:** Yes
+
+**Required Permission:** `hopframe.admin.groups.read`
+
+**Parameters:** None
+
+**Response:**
+
+- **200 OK:** Returns a list of default groups.
+  ```json
+  [
+    {
+      "Name": "string",
+      "IsDefaultGroup": "boolean",
+      "Description": "string",
+      "CreatedAt": "2023-12-23T00:00:00Z",
+      "Permissions": [
+        {
+          "Id": 1,
+          "PermissionName": "string",
+          "GrantedAt": "2023-12-23T00:00:00Z"
+        }
+      ]
+    }
+  ]
+  ```
+- **401 Unauthorized:** User is not authorized to access this endpoint.
+
+## API Endpoint: GetUserGroups
+
+**Endpoint:** `GET /api/v1/groups/user/{userId}`
+
+**Description:** Retrieves a list of groups for a specific user.
+
+**Authorization Required:** Yes
+
+**Required Permission:** `hopframe.admin.groups.read`
+
+**Parameters:**
+
+- **userId:** `string` (path) - The ID of the user.
+
+**Response:**
+
+- **200 OK:** Returns a list of groups for the user.
+  ```json
+  [
+    {
+      "Name": "string",
+      "IsDefaultGroup": "boolean",
+      "Description": "string",
+      "CreatedAt": "2023-12-23T00:00:00Z",
+      "Permissions": [
+        {
+          "Id": 1,
+          "PermissionName": "string",
+          "GrantedAt": "2023-12-23T00:00:00Z"
+        }
+      ]
+    }
+  ]
+  ```
+- **400 Bad Request:** Invalid user ID.
+- **401 Unauthorized:** User is not authorized to access this endpoint.
+- **404 Not Found:** User does not exist.
+
+## API Endpoint: GetGroup
+
+**Endpoint:** `GET /api/v1/groups/{name}`
+
+**Description:** Retrieves details of a specific group.
+
+**Authorization Required:** Yes
+
+**Required Permission:** `hopframe.admin.groups.read`
+
+**Parameters:**
+
+- **name:** `string` (path) - The name of the group.
+
+**Response:**
+
+- **200 OK:** Returns the details of the group.
+  ```json
+  {
+    "Name": "string",
+    "IsDefaultGroup": "boolean",
+    "Description": "string",
+    "CreatedAt": "2023-12-23T00:00:00Z",
+    "Permissions": [
+      {
+        "Id": 1,
+        "PermissionName": "string",
+        "GrantedAt": "2023-12-23T00:00:00Z"
+      }
+    ]
+  }
+  ```
+- **401 Unauthorized:** User is not authorized to access this endpoint.
+- **404 Not Found:** Group does not exist.
+
+## API Endpoint: CreateGroup
+
+**Endpoint:** `POST /api/v1/groups`
+
+**Description:** Creates a new group.
+
+**Authorization Required:** Yes
+
+**Required Permission:** `hopframe.admin.groups.create`
+
+**Parameters:**
+
+- **group:** `PermissionGroup` (body) - The group to be created.
+
+**Response:**
+
+- **200 OK:** Returns the created group.
+  ```json
+  {
+    "Name": "string",
+    "IsDefaultGroup": "boolean",
+    "Description": "string",
+    "CreatedAt": "2023-12-23T00:00:00Z",
+    "Permissions": [
+      {
+        "Id": 1,
+        "PermissionName": "string",
+        "GrantedAt": "2023-12-23T00:00:00Z"
+      }
+    ]
+  }
+  ```
+- **400 Bad Request:** Provide a group.
+- **400 Bad Request:** Group names must start with 'group.'.
+- **401 Unauthorized:** User is not authorized to access this endpoint.
+- **409 Conflict:** Group already exists.
+
+## API Endpoint: UpdateGroup
+
+**Endpoint:** `PUT /api/v1/groups`
+
+**Description:** Updates an existing group.
+
+**Authorization Required:** Yes
+
+**Required Permission:** `hopframe.admin.groups.update`
+
+**Parameters:**
+
+- **group:** `PermissionGroup` (body) - The group to be updated.
+
+**Response:**
+
+- **200 OK:** Returns the updated group.
+  ```json
+  {
+    "Name": "string",
+    "IsDefaultGroup": "boolean",
+    "Description": "string",
+    "CreatedAt": "2023-12-23T00:00:00Z",
+    "Permissions": [
+      {
+        "Id": 1,
+        "PermissionName": "string",
+        "GrantedAt": "2023-12-23T00:00:00Z"
+      }
+    ]
+  }
+  ```
+- **401 Unauthorized:** User is not authorized to access this endpoint.
+- **404 Not Found:** Group does not exist.
+
+## API Endpoint: DeleteGroup
+
+**Endpoint:** `DELETE /api/v1/groups/{name}`
+
+**Description:** Deletes a specific group.
+
+**Authorization Required:** Yes
+
+**Required Permission:** `hopframe.admin.groups.delete`
+
+**Parameters:**
+
+- **name:** `string` (path) - The name of the group to be deleted.
+
+**Response:**
+
+- **200 OK:** Group deleted successfully.
+- **401 Unauthorized:** User is not authorized to access this endpoint.
+- **404 Not Found:** Group does not exist.
diff --git a/tests/HopFrame.Tests.Api/Controllers/GroupControllerTests.cs b/tests/HopFrame.Tests.Api/Controllers/GroupControllerTests.cs
new file mode 100644
index 0000000..6f27961
--- /dev/null
+++ b/tests/HopFrame.Tests.Api/Controllers/GroupControllerTests.cs
@@ -0,0 +1,369 @@
+using System.Net;
+using HopFrame.Api.Controller;
+using HopFrame.Api.Logic;
+using HopFrame.Database.Models;
+using HopFrame.Database.Repositories;
+using HopFrame.Security.Authorization;
+using HopFrame.Security.Claims;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Options;
+using Moq;
+
+namespace HopFrame.Tests.Api.Controllers;
+
+public class GroupControllerTests {
+    private (Mock<IGroupLogic>, Mock<IOptions<AdminPermissionOptions>>, Mock<IPermissionRepository>, Mock<ITokenContext>
+        , GroupController) SetupEnvironment() {
+        var mockGroups = new Mock<IGroupLogic>();
+        var mockPermissions = new Mock<IOptions<AdminPermissionOptions>>();
+        var mockPerms = new Mock<IPermissionRepository>();
+        var mockContext = new Mock<ITokenContext>();
+
+        var options = new AdminPermissionOptions();
+
+        mockPermissions.Setup(o => o.Value).Returns(options);
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(true);
+
+        var controller = new GroupController(mockPermissions.Object, mockPerms.Object, mockContext.Object,
+            mockGroups.Object);
+
+        return (mockGroups, mockPermissions, mockPerms, mockContext, controller);
+    }
+
+    [Fact]
+    public async Task GetGroups_ShouldReturnUnauthorized_WhenUserIsNotAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(false);
+
+        // Act
+        var result = await controller.GetGroups();
+
+        // Assert
+        Assert.IsType<UnauthorizedResult>(result.Result);
+    }
+
+    [Fact]
+    public async Task GetGroups_ShouldReturnGroups_WhenUserIsAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        var groups = new List<PermissionGroup> { new PermissionGroup { Name = "testgroup" } };
+        mockGroups.Setup(g => g.GetGroups()).ReturnsAsync(LogicResult<IList<PermissionGroup>>.Ok(groups));
+
+        // Act
+        var result = await controller.GetGroups();
+
+        // Assert
+        var okResult = Assert.IsType<OkObjectResult>(result.Result);
+        var returnedGroups = Assert.IsAssignableFrom<IList<PermissionGroup>>(okResult.Value);
+        Assert.Single(returnedGroups);
+        Assert.Equal("testgroup", returnedGroups.First().Name);
+    }
+
+    [Fact]
+    public async Task GetDefaultGroups_ShouldReturnUnauthorized_WhenUserIsNotAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(false);
+
+        // Act
+        var result = await controller.GetDefaultGroups();
+
+        // Assert
+        Assert.IsType<UnauthorizedResult>(result.Result);
+    }
+
+    [Fact]
+    public async Task GetDefaultGroups_ShouldReturnGroups_WhenUserIsAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        var groups = new List<PermissionGroup> { new PermissionGroup { Name = "defaultgroup" } };
+        mockGroups.Setup(g => g.GetDefaultGroups()).ReturnsAsync(LogicResult<IList<PermissionGroup>>.Ok(groups));
+
+        // Act
+        var result = await controller.GetDefaultGroups();
+
+        // Assert
+        var okResult = Assert.IsType<OkObjectResult>(result.Result);
+        var returnedGroups = Assert.IsAssignableFrom<IList<PermissionGroup>>(okResult.Value);
+        Assert.Single(returnedGroups);
+        Assert.Equal("defaultgroup", returnedGroups.First().Name);
+    }
+
+    [Fact]
+    public async Task GetUserGroups_ShouldReturnUnauthorized_WhenUserIsNotAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(false);
+
+        // Act
+        var result = await controller.GetUserGroups("valid-user-id");
+
+        // Assert
+        Assert.IsType<UnauthorizedResult>(result.Result);
+    }
+
+    [Fact]
+    public async Task GetUserGroups_ShouldReturnGroups_WhenUserIsAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(true);
+        var groups = new List<PermissionGroup> { new PermissionGroup { Name = "usergroup" } };
+        mockGroups.Setup(g => g.GetUserGroups(It.IsAny<string>()))
+            .ReturnsAsync(LogicResult<IList<PermissionGroup>>.Ok(groups));
+
+        // Act
+        var result = await controller.GetUserGroups("valid-user-id");
+
+        // Assert
+        var okResult = Assert.IsType<OkObjectResult>(result.Result);
+        var returnedGroups = Assert.IsAssignableFrom<IList<PermissionGroup>>(okResult.Value);
+        Assert.Single(returnedGroups);
+        Assert.Equal("usergroup", returnedGroups.First().Name);
+    }
+
+    [Fact]
+    public async Task GetGroup_ShouldReturnUnauthorized_WhenUserIsNotAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(false);
+
+        // Act
+        var result = await controller.GetGroup("group-name");
+
+        // Assert
+        Assert.IsType<UnauthorizedResult>(result.Result);
+    }
+
+    [Fact]
+    public async Task GetGroup_ShouldReturnGroup_WhenUserIsAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(true);
+        var group = new PermissionGroup { Name = "group-name" };
+        mockGroups.Setup(g => g.GetGroup(It.IsAny<string>())).ReturnsAsync(LogicResult<PermissionGroup>.Ok(group));
+
+        // Act
+        var result = await controller.GetGroup("group-name");
+
+        // Assert
+        var okResult = Assert.IsType<OkObjectResult>(result.Result);
+        var returnedGroup = Assert.IsType<PermissionGroup>(okResult.Value);
+        Assert.Equal("group-name", returnedGroup.Name);
+    }
+
+    [Fact]
+    public async Task CreateGroup_ShouldReturnUnauthorized_WhenUserIsNotAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(false);
+
+        // Act
+        var result = await controller.CreateGroup(new PermissionGroup { Name = "newgroup" });
+
+        // Assert
+        Assert.IsType<UnauthorizedResult>(result.Result);
+    }
+
+    [Fact]
+    public async Task CreateGroup_ShouldReturnGroup_WhenUserIsAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(true);
+        var group = new PermissionGroup { Name = "newgroup" };
+        mockGroups.Setup(g => g.CreateGroup(It.IsAny<PermissionGroup>()))
+            .ReturnsAsync(LogicResult<PermissionGroup>.Ok(group));
+
+        // Act
+        var result = await controller.CreateGroup(new PermissionGroup { Name = "newgroup" });
+
+        // Assert
+        var okResult = Assert.IsType<OkObjectResult>(result.Result);
+        var createdGroup = Assert.IsType<PermissionGroup>(okResult.Value);
+        Assert.Equal("newgroup", createdGroup.Name);
+    }
+
+    [Fact]
+    public async Task UpdateGroup_ShouldReturnUnauthorized_WhenUserIsNotAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(false);
+
+        // Act
+        var result = await controller.UpdateGroup(new PermissionGroup { Name = "updategroup" });
+
+        // Assert
+        Assert.IsType<UnauthorizedResult>(result.Result);
+    }
+
+    [Fact]
+    public async Task UpdateGroup_ShouldReturnGroup_WhenUserIsAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(true);
+        var group = new PermissionGroup { Name = "updategroup" };
+        mockGroups.Setup(g => g.UpdateGroup(It.IsAny<PermissionGroup>()))
+            .ReturnsAsync(LogicResult<PermissionGroup>.Ok(group));
+
+        // Act
+        var result = await controller.UpdateGroup(new PermissionGroup { Name = "updategroup" });
+
+        // Assert
+        var okResult = Assert.IsType<OkObjectResult>(result.Result);
+        var updatedGroup = Assert.IsType<PermissionGroup>(okResult.Value);
+        Assert.Equal("updategroup", updatedGroup.Name);
+    }
+
+    [Fact]
+    public async Task DeleteGroup_ShouldReturnUnauthorized_WhenUserIsNotAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(false);
+
+        // Act
+        var result = await controller.DeleteGroup("group-name");
+
+        // Assert
+        Assert.IsType<UnauthorizedResult>(result);
+    }
+
+    [Fact]
+    public async Task DeleteGroup_ShouldReturnOk_WhenUserIsAuthorized() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockPerms.Setup(p => p.HasPermission(It.IsAny<User>(), It.IsAny<string>())).ReturnsAsync(true);
+        mockGroups.Setup(g => g.DeleteGroup(It.IsAny<string>())).ReturnsAsync(LogicResult.Ok());
+
+        // Act
+        var result = await controller.DeleteGroup("group-name");
+
+        // Assert
+        Assert.IsType<OkResult>(result);
+    }
+
+    [Fact]
+    public async Task GetUserGroups_ShouldReturnBadRequest_WhenUserIdIsInvalid() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockGroups.Setup(g => g.GetUserGroups(It.IsAny<string>()))
+            .ReturnsAsync(LogicResult<IList<PermissionGroup>>.BadRequest("Invalid user id"));
+
+        // Act
+        var result = await controller.GetUserGroups("invalid-user-id");
+
+        // Assert
+        var badRequestResult = Assert.IsType<ObjectResult>(result.Result);
+        Assert.Equal((int)HttpStatusCode.BadRequest, badRequestResult.StatusCode);
+        Assert.Equal("Invalid user id", badRequestResult.Value);
+    }
+
+    [Fact]
+    public async Task GetUserGroups_ShouldReturnNotFound_WhenUserDoesNotExist() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockGroups.Setup(g => g.GetUserGroups(It.IsAny<string>()))
+            .ReturnsAsync(LogicResult<IList<PermissionGroup>>.NotFound("That user does not exist"));
+
+        // Act
+        var result = await controller.GetUserGroups("nonexistent-user-id");
+
+        // Assert
+        var notFoundResult = Assert.IsType<ObjectResult>(result.Result);
+        Assert.Equal((int)HttpStatusCode.NotFound, notFoundResult.StatusCode);
+        Assert.Equal("That user does not exist", notFoundResult.Value);
+    }
+
+    [Fact]
+    public async Task GetGroup_ShouldReturnNotFound_WhenGroupDoesNotExist() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockGroups.Setup(g => g.GetGroup(It.IsAny<string>()))
+            .ReturnsAsync(LogicResult<PermissionGroup>.NotFound("That group does not exist"));
+
+        // Act
+        var result = await controller.GetGroup("nonexistent-group-name");
+
+        // Assert
+        var notFoundResult = Assert.IsType<ObjectResult>(result.Result);
+        Assert.Equal((int)HttpStatusCode.NotFound, notFoundResult.StatusCode);
+        Assert.Equal("That group does not exist", notFoundResult.Value);
+    }
+
+    [Fact]
+    public async Task CreateGroup_ShouldReturnBadRequest_WhenGroupIsNull() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockGroups.Setup(g => g.CreateGroup(It.IsAny<PermissionGroup>()))
+            .ReturnsAsync(LogicResult<PermissionGroup>.BadRequest("Provide a group"));
+
+        // Act
+        var result = await controller.CreateGroup(null);
+
+        // Assert
+        var badRequestResult = Assert.IsType<ObjectResult>(result.Result);
+        Assert.Equal((int)HttpStatusCode.BadRequest, badRequestResult.StatusCode);
+        Assert.Equal("Provide a group", badRequestResult.Value);
+    }
+
+    [Fact]
+    public async Task CreateGroup_ShouldReturnBadRequest_WhenGroupNameIsInvalid() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockGroups.Setup(g => g.CreateGroup(It.IsAny<PermissionGroup>()))
+            .ReturnsAsync(LogicResult<PermissionGroup>.BadRequest("Group names must start with 'group.'"));
+
+        // Act
+        var result = await controller.CreateGroup(new PermissionGroup { Name = "invalidgroupname" });
+
+        // Assert
+        var badRequestResult = Assert.IsType<ObjectResult>(result.Result);
+        Assert.Equal((int)HttpStatusCode.BadRequest, badRequestResult.StatusCode);
+        Assert.Equal("Group names must start with 'group.'", badRequestResult.Value);
+    }
+
+    [Fact]
+    public async Task CreateGroup_ShouldReturnConflict_WhenGroupAlreadyExists() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockGroups.Setup(g => g.CreateGroup(It.IsAny<PermissionGroup>()))
+            .ReturnsAsync(LogicResult<PermissionGroup>.Conflict("That group already exists"));
+
+        // Act
+        var result = await controller.CreateGroup(new PermissionGroup { Name = "group.exists" });
+
+        // Assert
+        var conflictResult = Assert.IsType<ObjectResult>(result.Result);
+        Assert.Equal((int)HttpStatusCode.Conflict, conflictResult.StatusCode);
+        Assert.Equal("That group already exists", conflictResult.Value);
+    }
+    
+    [Fact]
+    public async Task UpdateGroup_ShouldReturnNotFound_WhenGroupDoesNotExist() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockGroups.Setup(g => g.UpdateGroup(It.IsAny<PermissionGroup>())).ReturnsAsync(LogicResult<PermissionGroup>.NotFound("That group does not exist"));
+
+        // Act
+        var result = await controller.UpdateGroup(new PermissionGroup { Name = "nonexistent-group-name" });
+
+        // Assert
+        var notFoundResult = Assert.IsType<ObjectResult>(result.Result);
+        Assert.Equal((int)HttpStatusCode.NotFound, notFoundResult.StatusCode);
+        Assert.Equal("That group does not exist", notFoundResult.Value);
+    }
+
+    [Fact]
+    public async Task DeleteGroup_ShouldReturnNotFound_WhenGroupDoesNotExist() {
+        // Arrange
+        var (mockGroups, mockPermissions, mockPerms, mockContext, controller) = SetupEnvironment();
+        mockGroups.Setup(g => g.DeleteGroup(It.IsAny<string>())).ReturnsAsync(LogicResult.NotFound("That group does not exist"));
+
+        // Act
+        var result = await controller.DeleteGroup("nonexistent-group-name");
+
+        // Assert
+        var notFoundResult = Assert.IsType<ObjectResult>(result);
+        Assert.Equal((int)HttpStatusCode.NotFound, notFoundResult.StatusCode);
+        Assert.Equal("That group does not exist", notFoundResult.Value);
+    }
+}
\ No newline at end of file