forked from mirror/go-sqlite3
Adding unit test for VTable Insert/Update/Delete
This commit is contained in:
Kenneth Shaw
parent
f68bb95000
commit
18135fa650
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@ -537,7 +537,14 @@ func goVUpdate(pVTab unsafe.Pointer, argc C.int, argv **C.sqlite3_value, pRowid
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if err != nil {
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return mPrintf("%s", err.Error())
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}
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vals = append(vals, conv.Interface())
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// work around for SQLITE_NULL
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x := conv.Interface()
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if z, ok := x.([]byte); ok && z == nil {
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x = nil
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}
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vals = append(vals, x)
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}
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switch {
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@ -8,8 +8,11 @@ package sqlite3
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import (
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"database/sql"
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"errors"
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"fmt"
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"os"
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"reflect"
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"strings"
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"testing"
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)
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@ -148,8 +151,335 @@ func TestCreateModule(t *testing.T) {
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t.Fatalf("want %v but %v", intarray[i], value)
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}
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}
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_, err = db.Exec("DROP TABLE vtab")
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if err != nil {
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t.Fatalf("couldn't drop virtual table: %v", err)
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}
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}
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func TestVUpdate(t *testing.T) {
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tempFilename := TempFilename(t)
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defer os.Remove(tempFilename)
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// create module
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updateMod := &vtabUpdateModule{t, make(map[string]*vtabUpdateTable)}
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// register module
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sql.Register("sqlite3_TestVUpdate", &SQLiteDriver{
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ConnectHook: func(conn *SQLiteConn) error {
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return conn.CreateModule("updatetest", updateMod)
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},
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})
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// connect
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db, err := sql.Open("sqlite3_TestVUpdate", tempFilename)
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if err != nil {
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t.Fatalf("could not open db: %v", err)
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}
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// create test table
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_, err = db.Exec(`CREATE VIRTUAL TABLE vt USING updatetest(f1 integer, f2 text, f3 text)`)
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if err != nil {
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t.Fatalf("could not create updatetest vtable vt, got: %v", err)
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}
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// check that table is defined properly
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if len(updateMod.tables) != 1 {
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t.Fatalf("expected exactly 1 table to exist, got: %d", len(updateMod.tables))
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}
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if _, ok := updateMod.tables["vt"]; !ok {
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t.Fatalf("expected table `vt` to exist in tables")
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}
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// check nothing in updatetest
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rows, err := db.Query(`select * from vt`)
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if err != nil {
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t.Fatalf("could not query vt, got: %v", err)
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}
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i, err := getRowCount(rows)
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if err != nil {
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t.Fatalf("expected no error, got: %v", err)
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}
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if i != 0 {
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t.Fatalf("expected no rows in vt, got: %d", i)
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}
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_, err = db.Exec(`delete from vt where f1 = 'yes'`)
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if err != nil {
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t.Fatalf("expected error on delete, got nil")
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}
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// test bad column name
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_, err = db.Exec(`insert into vt (f4) values('a')`)
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if err == nil {
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t.Fatalf("expected error on insert, got nil")
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}
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// insert to vt
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res, err := db.Exec(`insert into vt (f1, f2, f3) values (115, 'b', 'c'), (116, 'd', 'e')`)
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if err != nil {
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t.Fatalf("expected no error on insert, got: %v", err)
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}
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n, err := res.RowsAffected()
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if err != nil {
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t.Fatalf("expected no error, got: %v", err)
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}
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if n != 2 {
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t.Fatalf("expected 1 row affected, got: %d", n)
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}
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// check vt table
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vt := updateMod.tables["vt"]
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if len(vt.data) != 2 {
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t.Fatalf("expected table vt to have exactly 2 rows, got: %d", len(vt.data))
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}
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if !reflect.DeepEqual(vt.data[0], []interface{}{int64(115), "b", "c"}) {
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t.Fatalf("expected table vt entry 0 to be [115 b c], instead: %v", vt.data[0])
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}
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if !reflect.DeepEqual(vt.data[1], []interface{}{int64(116), "d", "e"}) {
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t.Fatalf("expected table vt entry 1 to be [116 d e], instead: %v", vt.data[1])
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}
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// query vt
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var f1 int
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var f2, f3 string
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err = db.QueryRow(`select * from vt where f1 = 115`).Scan(&f1, &f2, &f3)
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if err != nil {
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t.Fatalf("expected no error on vt query, got: %v", err)
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}
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// check column values
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if f1 != 115 || f2 != "b" || f3 != "c" {
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t.Errorf("expected f1==115, f2==b, f3==c, got: %d, %q, %q", f1, f2, f3)
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}
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// update vt
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res, err = db.Exec(`update vt set f1=117, f2='f' where f3='e'`)
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if err != nil {
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t.Fatalf("expected no error, got: %v", err)
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}
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n, err = res.RowsAffected()
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if err != nil {
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t.Fatalf("expected no error, got: %v", err)
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}
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if n != 1 {
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t.Fatalf("expected exactly one row updated, got: %d", n)
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}
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// check vt table
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if len(vt.data) != 2 {
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t.Fatalf("expected table vt to have exactly 2 rows, got: %d", len(vt.data))
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}
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if !reflect.DeepEqual(vt.data[0], []interface{}{int64(115), "b", "c"}) {
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t.Fatalf("expected table vt entry 0 to be [115 b c], instead: %v", vt.data[0])
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}
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if !reflect.DeepEqual(vt.data[1], []interface{}{int64(117), "f", "e"}) {
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t.Fatalf("expected table vt entry 1 to be [117 f e], instead: %v", vt.data[1])
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}
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// delete from vt
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res, err = db.Exec(`delete from vt where f1 = 117`)
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if err != nil {
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t.Fatalf("expected no error, got: %v", err)
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}
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n, err = res.RowsAffected()
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if err != nil {
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t.Fatalf("expected no error, got: %v", err)
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}
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if n != 1 {
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t.Fatalf("expected exactly one row deleted, got: %d", n)
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}
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// check vt table
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if len(vt.data) != 1 {
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t.Fatalf("expected table vt to have exactly 1 row, got: %d", len(vt.data))
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}
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if !reflect.DeepEqual(vt.data[0], []interface{}{int64(115), "b", "c"}) {
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t.Fatalf("expected table vt entry 0 to be [115 b c], instead: %v", vt.data[0])
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}
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// check updatetest has 1 result
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rows, err = db.Query(`select * from vt`)
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if err != nil {
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t.Fatalf("could not query vt, got: %v", err)
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}
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i, err = getRowCount(rows)
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if err != nil {
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t.Fatalf("expected no error, got: %v", err)
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}
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if i != 1 {
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t.Fatalf("expected 1 row in vt, got: %d", i)
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}
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}
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func getRowCount(rows *sql.Rows) (int, error) {
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var i int
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for rows.Next() {
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i++
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}
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return i, nil
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}
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type vtabUpdateModule struct {
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t *testing.T
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tables map[string]*vtabUpdateTable
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}
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func (m *vtabUpdateModule) Create(c *SQLiteConn, args []string) (VTab, error) {
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if len(args) < 2 {
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return nil, errors.New("must declare at least one column")
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}
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// get database name, table name, and column declarations ...
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dbname, tname, decls := args[1], args[2], args[3:]
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// extract column names + types from parameters declarations
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cols, typs := make([]string, len(decls)), make([]string, len(decls))
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for i := 0; i < len(decls); i++ {
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n, typ := decls[i], ""
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if j := strings.IndexAny(n, " \t\n"); j != -1 {
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typ, n = strings.TrimSpace(n[j+1:]), n[:j]
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}
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cols[i], typs[i] = n, typ
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}
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// declare table
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err := c.DeclareVTab(fmt.Sprintf(`CREATE TABLE "%s"."%s" (%s)`, dbname, tname, strings.Join(decls, ",")))
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if err != nil {
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return nil, err
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}
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// create table
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vtab := &vtabUpdateTable{m.t, dbname, tname, cols, typs, make([][]interface{}, 0)}
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m.tables[tname] = vtab
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return vtab, nil
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}
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func (m *vtabUpdateModule) Connect(c *SQLiteConn, args []string) (VTab, error) {
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return m.Create(c, args)
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}
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func (m *vtabUpdateModule) DestroyModule() {}
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type vtabUpdateTable struct {
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t *testing.T
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db string
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name string
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cols []string
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typs []string
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data [][]interface{}
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}
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func (t *vtabUpdateTable) Open() (VTabCursor, error) {
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return &vtabUpdateCursor{t, 0}, nil
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}
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func (t *vtabUpdateTable) BestIndex(cst []InfoConstraint, ob []InfoOrderBy) (*IndexResult, error) {
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return &IndexResult{Used: make([]bool, len(cst))}, nil
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}
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func (t *vtabUpdateTable) Disconnect() error {
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return nil
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}
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func (t *vtabUpdateTable) Destroy() error {
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return nil
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}
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func (t *vtabUpdateTable) Insert(id interface{}, vals []interface{}) (int64, error) {
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var i int64
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if id == nil {
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i, t.data = int64(len(t.data)), append(t.data, vals)
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return i, nil
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}
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var ok bool
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i, ok = id.(int64)
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if !ok {
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return 0, fmt.Errorf("id is invalid type: %T", id)
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}
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t.data[i] = vals
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return i, nil
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}
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func (t *vtabUpdateTable) Update(id interface{}, vals []interface{}) error {
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i, ok := id.(int64)
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if !ok {
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return fmt.Errorf("id is invalid type: %T", id)
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}
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if int(i) >= len(t.data) || i < 0 {
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return fmt.Errorf("invalid row id %d", i)
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}
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t.data[int(i)] = vals
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return nil
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}
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func (t *vtabUpdateTable) Delete(id interface{}) error {
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i, ok := id.(int64)
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if !ok {
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return fmt.Errorf("id is invalid type: %T", id)
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}
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if int(i) >= len(t.data) || i < 0 {
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return fmt.Errorf("invalid row id %d", i)
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}
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t.data = append(t.data[:i], t.data[i+1:]...)
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return nil
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}
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type vtabUpdateCursor struct {
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t *vtabUpdateTable
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i int
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}
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func (c *vtabUpdateCursor) Column(ctxt *SQLiteContext, col int) error {
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switch x := c.t.data[c.i][col].(type) {
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case []byte:
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ctxt.ResultBlob(x)
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case bool:
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ctxt.ResultBool(x)
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case float64:
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ctxt.ResultDouble(x)
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case int:
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ctxt.ResultInt(x)
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case int64:
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ctxt.ResultInt64(x)
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case nil:
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ctxt.ResultNull()
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case string:
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ctxt.ResultText(x)
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default:
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ctxt.ResultText(fmt.Sprintf("%v", x))
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}
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return nil
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}
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func (c *vtabUpdateCursor) Filter(ixNum int, ixName string, vals []interface{}) error {
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return nil
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}
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func (c *vtabUpdateCursor) Next() error {
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c.i++
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return nil
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}
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func (c *vtabUpdateCursor) EOF() bool {
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return c.i >= len(c.t.data)
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}
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func (c *vtabUpdateCursor) Rowid() (int64, error) {
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return int64(c.i), nil
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}
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func (c *vtabUpdateCursor) Close() error {
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return nil
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}
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