feat: complete IM P0 and P1 reliability work

server/db/mysql/group_schema_test.go

@@ -0,0 +1,33 @@
+//go:build mysql
+
+package mysql
+
+import (
+	"database/sql"
+	"strings"
+	"testing"
+)
+
+type recordingGroupSchemaExecutor struct {
+	statements []string
+}
+
+func (e *recordingGroupSchemaExecutor) Exec(query string, _ ...any) (sql.Result, error) {
+	e.statements = append(e.statements, query)
+	return nil, nil
+}
+
+func TestEnsureIMGroupBusinessTablesUsesSelectedTenantDatabase(t *testing.T) {
+	exec := &recordingGroupSchemaExecutor{}
+	if err := ensureIMGroupBusinessTables(exec); err != nil {
+		t.Fatal(err)
+	}
+	if len(exec.statements) != 12 {
+		t.Fatalf("created %d group tables, want 12", len(exec.statements))
+	}
+	for _, statement := range exec.statements {
+		if strings.Contains(strings.ToLower(statement), "tinode.") || strings.Contains(strings.ToLower(statement), "create database") {
+			t.Fatalf("group schema must use the selected tenant database: %s", statement)
+		}
+	}
+}