[v10.0.x] SQLStore: Align SQLite IsUniqueConstraintViolation() with other backend implementations (#69227)

SQLStore: Align SQLite IsUniqueConstraintViolation() with other backend implementations (#69224)

* Add integration test for primary key and unique constrain violation

* Align SQLite IsUniqueConstraintViolation implementation with other backends

(cherry picked from commit 74e87ccbbd)

Co-authored-by: Sofia Papagiannaki <1632407+papagian@users.noreply.github.com>

pkg/services/sqlstore/sqlstore_test.go

@@ -1,12 +1,16 @@
 package sqlstore
 
 import (
+	"context"
 	"errors"
 	"net/url"
 	"testing"
+	"time"
 
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
+	"github.com/grafana/grafana/pkg/services/org"
 	"github.com/grafana/grafana/pkg/setting"
 )
 
@@ -99,6 +103,54 @@ func TestIntegrationSQLConnectionString(t *testing.T) {
 	}
 }
 
+func TestIntegrationIsUniqueConstraintViolation(t *testing.T) {
+	store := InitTestDB(t)
+
+	testCases := []struct {
+		desc string
+		f    func(*testing.T, *DBSession) error
+	}{
+		{
+			desc: "successfully detect primary key violations",
+			f: func(t *testing.T, sess *DBSession) error {
+				// Attempt to insert org with provided ID (primary key) twice
+				now := time.Now()
+				org := org.Org{Name: "test org primary key violation", Created: now, Updated: now, ID: 42}
+				err := sess.InsertId(&org, store.Dialect)
+				require.NoError(t, err)
+
+				// Provide a different name to avoid unique constraint violation
+				org.Name = "test org 2"
+				return sess.InsertId(&org, store.Dialect)
+			},
+		},
+		{
+			desc: "successfully detect unique constrain violations",
+			f: func(t *testing.T, sess *DBSession) error {
+				// Attempt to insert org with reserved name
+				now := time.Now()
+				org := org.Org{Name: "test org unique constrain violation", Created: now, Updated: now, ID: 43}
+				err := sess.InsertId(&org, store.Dialect)
+				require.NoError(t, err)
+
+				// Provide a different ID to avoid primary key violation
+				org.ID = 44
+				return sess.InsertId(&org, store.Dialect)
+			},
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.desc, func(t *testing.T) {
+			err := store.WithDbSession(context.Background(), func(sess *DBSession) error {
+				return tc.f(t, sess)
+			})
+			require.Error(t, err)
+			assert.True(t, store.Dialect.IsUniqueConstraintViolation(err))
+		})
+	}
+}
+
 func makeSQLStoreTestConfig(t *testing.T, dbType, host, dbURL string) *setting.Cfg {
 	t.Helper()