test: add Exec tests and benchmarks

sqlite3_test.go

@@ -10,6 +10,7 @@ package sqlite3
 
 import (
 	"bytes"
+	"context"
 	"database/sql"
 	"database/sql/driver"
 	"errors"
@@ -1090,6 +1091,67 @@ func TestExecer(t *testing.T) {
 	}
 }
 
+func TestExecDriverResult(t *testing.T) {
+	setup := func(t *testing.T) *sql.DB {
+		db, err := sql.Open("sqlite3", t.TempDir()+"/test.sqlite3")
+		if err != nil {
+			t.Fatal("Failed to open database:", err)
+		}
+		if _, err := db.Exec(`CREATE TABLE foo (id INTEGER PRIMARY KEY);`); err != nil {
+			t.Fatal(err)
+		}
+		t.Cleanup(func() { db.Close() })
+		return db
+	}
+
+	test := func(t *testing.T, execStmt string, args ...any) {
+		db := setup(t)
+		res, err := db.Exec(execStmt, args...)
+		if err != nil {
+			t.Fatal(err)
+		}
+		rows, err := res.RowsAffected()
+		if err != nil {
+			t.Fatal(err)
+		}
+		// We only return the changes from the last statement.
+		if rows != 1 {
+			t.Errorf("RowsAffected got: %d want: %d", rows, 1)
+		}
+		id, err := res.LastInsertId()
+		if err != nil {
+			t.Fatal(err)
+		}
+		if id != 3 {
+			t.Errorf("LastInsertId got: %d want: %d", id, 3)
+		}
+		var count int64
+		err = db.QueryRow(`SELECT COUNT(*) FROM foo WHERE id IN (1, 2, 3);`).Scan(&count)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if count != 3 {
+			t.Errorf("Expected count to be %d got: %d", 3, count)
+		}
+	}
+
+	t.Run("NoArgs", func(t *testing.T) {
+		const stmt = `
+		INSERT INTO foo(id) VALUES(1);
+		INSERT INTO foo(id) VALUES(2);
+		INSERT INTO foo(id) VALUES(3);`
+		test(t, stmt)
+	})
+
+	t.Run("WithArgs", func(t *testing.T) {
+		const stmt = `
+		INSERT INTO foo(id) VALUES(?);
+		INSERT INTO foo(id) VALUES(?);
+		INSERT INTO foo(id) VALUES(?);`
+		test(t, stmt, 1, 2, 3)
+	})
+}
+
 func TestQueryer(t *testing.T) {
 	tempFilename := TempFilename(t)
 	defer os.Remove(tempFilename)
@@ -2106,6 +2168,10 @@ var tests = []testing.InternalTest{
 
 var benchmarks = []testing.InternalBenchmark{
 	{Name: "BenchmarkExec", F: benchmarkExec},
+	{Name: "BenchmarkExecContext", F: benchmarkExecContext},
+	{Name: "BenchmarkExecStep", F: benchmarkExecStep},
+	{Name: "BenchmarkExecContextStep", F: benchmarkExecContextStep},
+	{Name: "BenchmarkExecTx", F: benchmarkExecTx},
 	{Name: "BenchmarkQuery", F: benchmarkQuery},
 	{Name: "BenchmarkParams", F: benchmarkParams},
 	{Name: "BenchmarkStmt", F: benchmarkStmt},
@@ -2458,11 +2524,76 @@ func testExecEmptyQuery(t *testing.T) {
 
 // benchmarkExec is benchmark for exec
 func benchmarkExec(b *testing.B) {
+	b.Run("Params", func(b *testing.B) {
 		for i := 0; i < b.N; i++ {
-		if _, err := db.Exec("select 1"); err != nil {
+			if _, err := db.Exec("select ?;", int64(1)); err != nil {
 				panic(err)
 			}
 		}
+	})
+	b.Run("NoParams", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			if _, err := db.Exec("select 1;"); err != nil {
+				panic(err)
+			}
+		}
+	})
+}
+
+func benchmarkExecContext(b *testing.B) {
+	b.Run("Params", func(b *testing.B) {
+		ctx, cancel := context.WithCancel(context.Background())
+		defer cancel()
+		for i := 0; i < b.N; i++ {
+			if _, err := db.ExecContext(ctx, "select ?;", int64(1)); err != nil {
+				panic(err)
+			}
+		}
+	})
+	b.Run("NoParams", func(b *testing.B) {
+		ctx, cancel := context.WithCancel(context.Background())
+		defer cancel()
+		for i := 0; i < b.N; i++ {
+			if _, err := db.ExecContext(ctx, "select 1;"); err != nil {
+				panic(err)
+			}
+		}
+	})
+}
+
+func benchmarkExecTx(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		tx, err := db.Begin()
+		if err != nil {
+			panic(err)
+		}
+		if _, err := tx.Exec("select 1;"); err != nil {
+			panic(err)
+		}
+		if err := tx.Commit(); err != nil {
+			panic(err)
+		}
+	}
+}
+
+var largeSelectStmt = strings.Repeat("select 1;\n", 1_000)
+
+func benchmarkExecStep(b *testing.B) {
+	for n := 0; n < b.N; n++ {
+		if _, err := db.Exec(largeSelectStmt); err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+func benchmarkExecContextStep(b *testing.B) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+	for n := 0; n < b.N; n++ {
+		if _, err := db.ExecContext(ctx, largeSelectStmt); err != nil {
+			b.Fatal(err)
+		}
+	}
 }
 
 // benchmarkQuery is benchmark for query