first commit

backend/internal/service/admin_service_create_user_test.go

@@ -0,0 +1,67 @@
+//go:build unit
+
+package service
+
+import (
+	"context"
+	"errors"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestAdminService_CreateUser_Success(t *testing.T) {
+	repo := &userRepoStub{nextID: 10}
+	svc := &adminServiceImpl{userRepo: repo}
+
+	input := &CreateUserInput{
+		Email:         "user@test.com",
+		Password:      "strong-pass",
+		Username:      "tester",
+		Notes:         "note",
+		Balance:       12.5,
+		Concurrency:   7,
+		AllowedGroups: []int64{3, 5},
+	}
+
+	user, err := svc.CreateUser(context.Background(), input)
+	require.NoError(t, err)
+	require.NotNil(t, user)
+	require.Equal(t, int64(10), user.ID)
+	require.Equal(t, input.Email, user.Email)
+	require.Equal(t, input.Username, user.Username)
+	require.Equal(t, input.Notes, user.Notes)
+	require.Equal(t, input.Balance, user.Balance)
+	require.Equal(t, input.Concurrency, user.Concurrency)
+	require.Equal(t, input.AllowedGroups, user.AllowedGroups)
+	require.Equal(t, RoleUser, user.Role)
+	require.Equal(t, StatusActive, user.Status)
+	require.True(t, user.CheckPassword(input.Password))
+	require.Len(t, repo.created, 1)
+	require.Equal(t, user, repo.created[0])
+}
+
+func TestAdminService_CreateUser_EmailExists(t *testing.T) {
+	repo := &userRepoStub{createErr: ErrEmailExists}
+	svc := &adminServiceImpl{userRepo: repo}
+
+	_, err := svc.CreateUser(context.Background(), &CreateUserInput{
+		Email:    "dup@test.com",
+		Password: "password",
+	})
+	require.ErrorIs(t, err, ErrEmailExists)
+	require.Empty(t, repo.created)
+}
+
+func TestAdminService_CreateUser_CreateError(t *testing.T) {
+	createErr := errors.New("db down")
+	repo := &userRepoStub{createErr: createErr}
+	svc := &adminServiceImpl{userRepo: repo}
+
+	_, err := svc.CreateUser(context.Background(), &CreateUserInput{
+		Email:    "user@test.com",
+		Password: "password",
+	})
+	require.ErrorIs(t, err, createErr)
+	require.Empty(t, repo.created)
+}