Create sqlite3_opt_vtable_test.go
This commit is contained in:
s441433
parent
e09091b37b
commit
ea4ac38ef7
486
src/github.com/mattn/go-sqlite3/sqlite3_opt_vtable_test.go
Normal file
486
src/github.com/mattn/go-sqlite3/sqlite3_opt_vtable_test.go
Normal file
@ -0,0 +1,486 @@
|
||||
// Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
|
||||
//
|
||||
// Use of this source code is governed by an MIT-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build sqlite_vtable vtable
|
||||
|
||||
package sqlite3
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"errors"
|
||||
"fmt"
|
||||
"os"
|
||||
"reflect"
|
||||
"strings"
|
||||
"testing"
|
||||
)
|
||||
|
||||
type testModule struct {
|
||||
t *testing.T
|
||||
intarray []int
|
||||
}
|
||||
|
||||
type testVTab struct {
|
||||
intarray []int
|
||||
}
|
||||
|
||||
type testVTabCursor struct {
|
||||
vTab *testVTab
|
||||
index int
|
||||
}
|
||||
|
||||
func (m testModule) Create(c *SQLiteConn, args []string) (VTab, error) {
|
||||
if len(args) != 6 {
|
||||
m.t.Fatal("six arguments expected")
|
||||
}
|
||||
if args[0] != "test" {
|
||||
m.t.Fatal("module name")
|
||||
}
|
||||
if args[1] != "main" {
|
||||
m.t.Fatal("db name")
|
||||
}
|
||||
if args[2] != "vtab" {
|
||||
m.t.Fatal("table name")
|
||||
}
|
||||
if args[3] != "'1'" {
|
||||
m.t.Fatal("first arg")
|
||||
}
|
||||
if args[4] != "2" {
|
||||
m.t.Fatal("second arg")
|
||||
}
|
||||
if args[5] != "three" {
|
||||
m.t.Fatal("third argsecond arg")
|
||||
}
|
||||
err := c.DeclareVTab("CREATE TABLE x(test TEXT)")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &testVTab{m.intarray}, nil
|
||||
}
|
||||
|
||||
func (m testModule) Connect(c *SQLiteConn, args []string) (VTab, error) {
|
||||
return m.Create(c, args)
|
||||
}
|
||||
|
||||
func (m testModule) DestroyModule() {}
|
||||
|
||||
func (v *testVTab) BestIndex(cst []InfoConstraint, ob []InfoOrderBy) (*IndexResult, error) {
|
||||
used := make([]bool, 0, len(cst))
|
||||
for range cst {
|
||||
used = append(used, false)
|
||||
}
|
||||
return &IndexResult{
|
||||
Used: used,
|
||||
IdxNum: 0,
|
||||
IdxStr: "test-index",
|
||||
AlreadyOrdered: true,
|
||||
EstimatedCost: 100,
|
||||
EstimatedRows: 200,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (v *testVTab) Disconnect() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (v *testVTab) Destroy() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (v *testVTab) Open() (VTabCursor, error) {
|
||||
return &testVTabCursor{v, 0}, nil
|
||||
}
|
||||
|
||||
func (vc *testVTabCursor) Close() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (vc *testVTabCursor) Filter(idxNum int, idxStr string, vals []interface{}) error {
|
||||
vc.index = 0
|
||||
return nil
|
||||
}
|
||||
|
||||
func (vc *testVTabCursor) Next() error {
|
||||
vc.index++
|
||||
return nil
|
||||
}
|
||||
|
||||
func (vc *testVTabCursor) EOF() bool {
|
||||
return vc.index >= len(vc.vTab.intarray)
|
||||
}
|
||||
|
||||
func (vc *testVTabCursor) Column(c *SQLiteContext, col int) error {
|
||||
if col != 0 {
|
||||
return fmt.Errorf("column index out of bounds: %d", col)
|
||||
}
|
||||
c.ResultInt(vc.vTab.intarray[vc.index])
|
||||
return nil
|
||||
}
|
||||
|
||||
func (vc *testVTabCursor) Rowid() (int64, error) {
|
||||
return int64(vc.index), nil
|
||||
}
|
||||
|
||||
func TestCreateModule(t *testing.T) {
|
||||
tempFilename := TempFilename(t)
|
||||
defer os.Remove(tempFilename)
|
||||
intarray := []int{1, 2, 3}
|
||||
sql.Register("sqlite3_TestCreateModule", &SQLiteDriver{
|
||||
ConnectHook: func(conn *SQLiteConn) error {
|
||||
return conn.CreateModule("test", testModule{t, intarray})
|
||||
},
|
||||
})
|
||||
db, err := sql.Open("sqlite3_TestCreateModule", tempFilename)
|
||||
if err != nil {
|
||||
t.Fatalf("could not open db: %v", err)
|
||||
}
|
||||
_, err = db.Exec("CREATE VIRTUAL TABLE vtab USING test('1', 2, three)")
|
||||
if err != nil {
|
||||
t.Fatalf("could not create vtable: %v", err)
|
||||
}
|
||||
|
||||
var i, value int
|
||||
rows, err := db.Query("SELECT rowid, * FROM vtab WHERE test = '3'")
|
||||
if err != nil {
|
||||
t.Fatalf("couldn't select from virtual table: %v", err)
|
||||
}
|
||||
for rows.Next() {
|
||||
rows.Scan(&i, &value)
|
||||
if intarray[i] != value {
|
||||
t.Fatalf("want %v but %v", intarray[i], value)
|
||||
}
|
||||
}
|
||||
|
||||
_, err = db.Exec("DROP TABLE vtab")
|
||||
if err != nil {
|
||||
t.Fatalf("couldn't drop virtual table: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestVUpdate(t *testing.T) {
|
||||
tempFilename := TempFilename(t)
|
||||
defer os.Remove(tempFilename)
|
||||
|
||||
// create module
|
||||
updateMod := &vtabUpdateModule{t, make(map[string]*vtabUpdateTable)}
|
||||
|
||||
// register module
|
||||
sql.Register("sqlite3_TestVUpdate", &SQLiteDriver{
|
||||
ConnectHook: func(conn *SQLiteConn) error {
|
||||
return conn.CreateModule("updatetest", updateMod)
|
||||
},
|
||||
})
|
||||
|
||||
// connect
|
||||
db, err := sql.Open("sqlite3_TestVUpdate", tempFilename)
|
||||
if err != nil {
|
||||
t.Fatalf("could not open db: %v", err)
|
||||
}
|
||||
|
||||
// create test table
|
||||
_, err = db.Exec(`CREATE VIRTUAL TABLE vt USING updatetest(f1 integer, f2 text, f3 text)`)
|
||||
if err != nil {
|
||||
t.Fatalf("could not create updatetest vtable vt, got: %v", err)
|
||||
}
|
||||
|
||||
// check that table is defined properly
|
||||
if len(updateMod.tables) != 1 {
|
||||
t.Fatalf("expected exactly 1 table to exist, got: %d", len(updateMod.tables))
|
||||
}
|
||||
if _, ok := updateMod.tables["vt"]; !ok {
|
||||
t.Fatalf("expected table `vt` to exist in tables")
|
||||
}
|
||||
|
||||
// check nothing in updatetest
|
||||
rows, err := db.Query(`select * from vt`)
|
||||
if err != nil {
|
||||
t.Fatalf("could not query vt, got: %v", err)
|
||||
}
|
||||
i, err := getRowCount(rows)
|
||||
if err != nil {
|
||||
t.Fatalf("expected no error, got: %v", err)
|
||||
}
|
||||
if i != 0 {
|
||||
t.Fatalf("expected no rows in vt, got: %d", i)
|
||||
}
|
||||
|
||||
_, err = db.Exec(`delete from vt where f1 = 'yes'`)
|
||||
if err != nil {
|
||||
t.Fatalf("expected error on delete, got nil")
|
||||
}
|
||||
|
||||
// test bad column name
|
||||
_, err = db.Exec(`insert into vt (f4) values('a')`)
|
||||
if err == nil {
|
||||
t.Fatalf("expected error on insert, got nil")
|
||||
}
|
||||
|
||||
// insert to vt
|
||||
res, err := db.Exec(`insert into vt (f1, f2, f3) values (115, 'b', 'c'), (116, 'd', 'e')`)
|
||||
if err != nil {
|
||||
t.Fatalf("expected no error on insert, got: %v", err)
|
||||
}
|
||||
n, err := res.RowsAffected()
|
||||
if err != nil {
|
||||
t.Fatalf("expected no error, got: %v", err)
|
||||
}
|
||||
if n != 2 {
|
||||
t.Fatalf("expected 1 row affected, got: %d", n)
|
||||
}
|
||||
|
||||
// check vt table
|
||||
vt := updateMod.tables["vt"]
|
||||
if len(vt.data) != 2 {
|
||||
t.Fatalf("expected table vt to have exactly 2 rows, got: %d", len(vt.data))
|
||||
}
|
||||
if !reflect.DeepEqual(vt.data[0], []interface{}{int64(115), "b", "c"}) {
|
||||
t.Fatalf("expected table vt entry 0 to be [115 b c], instead: %v", vt.data[0])
|
||||
}
|
||||
if !reflect.DeepEqual(vt.data[1], []interface{}{int64(116), "d", "e"}) {
|
||||
t.Fatalf("expected table vt entry 1 to be [116 d e], instead: %v", vt.data[1])
|
||||
}
|
||||
|
||||
// query vt
|
||||
var f1 int
|
||||
var f2, f3 string
|
||||
err = db.QueryRow(`select * from vt where f1 = 115`).Scan(&f1, &f2, &f3)
|
||||
if err != nil {
|
||||
t.Fatalf("expected no error on vt query, got: %v", err)
|
||||
}
|
||||
|
||||
// check column values
|
||||
if f1 != 115 || f2 != "b" || f3 != "c" {
|
||||
t.Errorf("expected f1==115, f2==b, f3==c, got: %d, %q, %q", f1, f2, f3)
|
||||
}
|
||||
|
||||
// update vt
|
||||
res, err = db.Exec(`update vt set f1=117, f2='f' where f3='e'`)
|
||||
if err != nil {
|
||||
t.Fatalf("expected no error, got: %v", err)
|
||||
}
|
||||
n, err = res.RowsAffected()
|
||||
if err != nil {
|
||||
t.Fatalf("expected no error, got: %v", err)
|
||||
}
|
||||
if n != 1 {
|
||||
t.Fatalf("expected exactly one row updated, got: %d", n)
|
||||
}
|
||||
|
||||
// check vt table
|
||||
if len(vt.data) != 2 {
|
||||
t.Fatalf("expected table vt to have exactly 2 rows, got: %d", len(vt.data))
|
||||
}
|
||||
if !reflect.DeepEqual(vt.data[0], []interface{}{int64(115), "b", "c"}) {
|
||||
t.Fatalf("expected table vt entry 0 to be [115 b c], instead: %v", vt.data[0])
|
||||
}
|
||||
if !reflect.DeepEqual(vt.data[1], []interface{}{int64(117), "f", "e"}) {
|
||||
t.Fatalf("expected table vt entry 1 to be [117 f e], instead: %v", vt.data[1])
|
||||
}
|
||||
|
||||
// delete from vt
|
||||
res, err = db.Exec(`delete from vt where f1 = 117`)
|
||||
if err != nil {
|
||||
t.Fatalf("expected no error, got: %v", err)
|
||||
}
|
||||
n, err = res.RowsAffected()
|
||||
if err != nil {
|
||||
t.Fatalf("expected no error, got: %v", err)
|
||||
}
|
||||
if n != 1 {
|
||||
t.Fatalf("expected exactly one row deleted, got: %d", n)
|
||||
}
|
||||
|
||||
// check vt table
|
||||
if len(vt.data) != 1 {
|
||||
t.Fatalf("expected table vt to have exactly 1 row, got: %d", len(vt.data))
|
||||
}
|
||||
if !reflect.DeepEqual(vt.data[0], []interface{}{int64(115), "b", "c"}) {
|
||||
t.Fatalf("expected table vt entry 0 to be [115 b c], instead: %v", vt.data[0])
|
||||
}
|
||||
|
||||
// check updatetest has 1 result
|
||||
rows, err = db.Query(`select * from vt`)
|
||||
if err != nil {
|
||||
t.Fatalf("could not query vt, got: %v", err)
|
||||
}
|
||||
i, err = getRowCount(rows)
|
||||
if err != nil {
|
||||
t.Fatalf("expected no error, got: %v", err)
|
||||
}
|
||||
if i != 1 {
|
||||
t.Fatalf("expected 1 row in vt, got: %d", i)
|
||||
}
|
||||
}
|
||||
|
||||
func getRowCount(rows *sql.Rows) (int, error) {
|
||||
var i int
|
||||
for rows.Next() {
|
||||
i++
|
||||
}
|
||||
return i, nil
|
||||
}
|
||||
|
||||
type vtabUpdateModule struct {
|
||||
t *testing.T
|
||||
tables map[string]*vtabUpdateTable
|
||||
}
|
||||
|
||||
func (m *vtabUpdateModule) Create(c *SQLiteConn, args []string) (VTab, error) {
|
||||
if len(args) < 2 {
|
||||
return nil, errors.New("must declare at least one column")
|
||||
}
|
||||
|
||||
// get database name, table name, and column declarations ...
|
||||
dbname, tname, decls := args[1], args[2], args[3:]
|
||||
|
||||
// extract column names + types from parameters declarations
|
||||
cols, typs := make([]string, len(decls)), make([]string, len(decls))
|
||||
for i := 0; i < len(decls); i++ {
|
||||
n, typ := decls[i], ""
|
||||
if j := strings.IndexAny(n, " \t\n"); j != -1 {
|
||||
typ, n = strings.TrimSpace(n[j+1:]), n[:j]
|
||||
}
|
||||
cols[i], typs[i] = n, typ
|
||||
}
|
||||
|
||||
// declare table
|
||||
err := c.DeclareVTab(fmt.Sprintf(`CREATE TABLE "%s"."%s" (%s)`, dbname, tname, strings.Join(decls, ",")))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// create table
|
||||
vtab := &vtabUpdateTable{m.t, dbname, tname, cols, typs, make([][]interface{}, 0)}
|
||||
m.tables[tname] = vtab
|
||||
return vtab, nil
|
||||
}
|
||||
|
||||
func (m *vtabUpdateModule) Connect(c *SQLiteConn, args []string) (VTab, error) {
|
||||
return m.Create(c, args)
|
||||
}
|
||||
|
||||
func (m *vtabUpdateModule) DestroyModule() {}
|
||||
|
||||
type vtabUpdateTable struct {
|
||||
t *testing.T
|
||||
db string
|
||||
name string
|
||||
cols []string
|
||||
typs []string
|
||||
data [][]interface{}
|
||||
}
|
||||
|
||||
func (t *vtabUpdateTable) Open() (VTabCursor, error) {
|
||||
return &vtabUpdateCursor{t, 0}, nil
|
||||
}
|
||||
|
||||
func (t *vtabUpdateTable) BestIndex(cst []InfoConstraint, ob []InfoOrderBy) (*IndexResult, error) {
|
||||
return &IndexResult{Used: make([]bool, len(cst))}, nil
|
||||
}
|
||||
|
||||
func (t *vtabUpdateTable) Disconnect() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (t *vtabUpdateTable) Destroy() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (t *vtabUpdateTable) Insert(id interface{}, vals []interface{}) (int64, error) {
|
||||
var i int64
|
||||
if id == nil {
|
||||
i, t.data = int64(len(t.data)), append(t.data, vals)
|
||||
return i, nil
|
||||
}
|
||||
|
||||
var ok bool
|
||||
i, ok = id.(int64)
|
||||
if !ok {
|
||||
return 0, fmt.Errorf("id is invalid type: %T", id)
|
||||
}
|
||||
|
||||
t.data[i] = vals
|
||||
|
||||
return i, nil
|
||||
}
|
||||
|
||||
func (t *vtabUpdateTable) Update(id interface{}, vals []interface{}) error {
|
||||
i, ok := id.(int64)
|
||||
if !ok {
|
||||
return fmt.Errorf("id is invalid type: %T", id)
|
||||
}
|
||||
|
||||
if int(i) >= len(t.data) || i < 0 {
|
||||
return fmt.Errorf("invalid row id %d", i)
|
||||
}
|
||||
|
||||
t.data[int(i)] = vals
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (t *vtabUpdateTable) Delete(id interface{}) error {
|
||||
i, ok := id.(int64)
|
||||
if !ok {
|
||||
return fmt.Errorf("id is invalid type: %T", id)
|
||||
}
|
||||
|
||||
if int(i) >= len(t.data) || i < 0 {
|
||||
return fmt.Errorf("invalid row id %d", i)
|
||||
}
|
||||
|
||||
t.data = append(t.data[:i], t.data[i+1:]...)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
type vtabUpdateCursor struct {
|
||||
t *vtabUpdateTable
|
||||
i int
|
||||
}
|
||||
|
||||
func (c *vtabUpdateCursor) Column(ctxt *SQLiteContext, col int) error {
|
||||
switch x := c.t.data[c.i][col].(type) {
|
||||
case []byte:
|
||||
ctxt.ResultBlob(x)
|
||||
case bool:
|
||||
ctxt.ResultBool(x)
|
||||
case float64:
|
||||
ctxt.ResultDouble(x)
|
||||
case int:
|
||||
ctxt.ResultInt(x)
|
||||
case int64:
|
||||
ctxt.ResultInt64(x)
|
||||
case nil:
|
||||
ctxt.ResultNull()
|
||||
case string:
|
||||
ctxt.ResultText(x)
|
||||
default:
|
||||
ctxt.ResultText(fmt.Sprintf("%v", x))
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *vtabUpdateCursor) Filter(ixNum int, ixName string, vals []interface{}) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *vtabUpdateCursor) Next() error {
|
||||
c.i++
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *vtabUpdateCursor) EOF() bool {
|
||||
return c.i >= len(c.t.data)
|
||||
}
|
||||
|
||||
func (c *vtabUpdateCursor) Rowid() (int64, error) {
|
||||
return int64(c.i), nil
|
||||
}
|
||||
|
||||
func (c *vtabUpdateCursor) Close() error {
|
||||
return nil
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user