added user admin interface

app/core/admin.py

@@ -1,3 +1,31 @@
-from django.contrib import admin # noqa
+"""Django Admin customization for the core app."""
+from django.contrib import admin
+from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
+from django.utils.translation import gettext_lazy as _
+from core import models
 
-# Register your models here.
+class UserAdmin(BaseUserAdmin):
+    """Customize the user admin page."""
+    ordering = ['id']
+    list_display = ['email', 'name']
+
+    fieldsets = (
+        (None, {'fields': ('email', 'password')}),
+        ('Personal Info', {'fields': ('name',)}),
+        (
+            _('Permissions'),
+            {
+                'fields': ('is_active', 'is_staff', 'is_superuser'),
+            }
+        ),
+        ('Important dates', {'fields': ('last_login',)}),
+    )
+    add_fieldsets = (
+        (None, {
+
+            'classes': ('wide',),
+            'fields': ('email', 'password1', 'password2'),
+        }),
+    )
+
+admin.site.register(models.User, UserAdmin)

app/core/tests/test_admin.py

@@ -0,0 +1,42 @@
+from django.test import TestCase, Client
+from django.contrib.auth import get_user_model
+from django.urls import reverse
+
+class AdminSiteTests(TestCase):
+    """Test the admin site"""
+
+    def setUp(self):
+        """Create user & client for testing"""
+        self.client = Client()
+        self.admin_user = get_user_model().objects.create_superuser(
+            email='admin@example.com',
+            password='password123',
+            )
+        self.client.force_login(self.admin_user)
+        self.user = get_user_model().objects.create_user(
+            email='user@example.com',
+            password='password123',
+            name='Test user full name',
+            )
+
+    def test_users_list(self):
+        """Test users are listed on user page"""
+        url = reverse('admin:core_user_changelist')
+        res = self.client.get(url)
+
+        self.assertContains(res, self.user.name)
+        self.assertContains(res, self.user.email)
+
+    def test_user_change_page(self):
+        """Test user edit page works"""
+        url = reverse('admin:core_user_change', args=[self.user.id])
+        res = self.client.get(url)
+
+        self.assertEqual(res.status_code, 200)
+
+    def test_create_user_page(self):
+        """Test create user page works"""
+        url = reverse('admin:core_user_add')
+        res = self.client.get(url)
+
+        self.assertEqual(res.status_code, 200)