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package query_test
import (
"context"
"database/sql"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/lxc/incus/v6/internal/server/db/query"
)
// Exercise possible failure modes.
func TestSelectObjects_Error(t *testing.T) {
cases := []struct {
dest query.Dest
query string
error string
}{
{
func(scan func(dest ...any) error) error {
var row any
return scan(row)
},
"SELECT id, name FROM test",
"sql: expected 2 destination arguments in Scan, not 1",
},
}
for _, c := range cases {
t.Run(c.query, func(t *testing.T) {
tx := newTxForObjects(t)
stmt, err := tx.Prepare(c.query)
require.NoError(t, err)
err = query.SelectObjects(context.TODO(), stmt, c.dest)
assert.EqualError(t, err, c.error)
})
}
}
// Scan rows yielded by the query.
func TestSelectObjects(t *testing.T) {
tx := newTxForObjects(t)
objects := make([]struct {
ID int
Name string
}, 1)
object := objects[0]
count := 0
dest := func(scan func(dest ...any) error) error {
require.Equal(t, 0, count, "expected at most one row to be yielded")
count++
return scan(&object.ID, &object.Name)
}
stmt, err := tx.Prepare("SELECT id, name FROM test WHERE name=?")
require.NoError(t, err)
err = query.SelectObjects(context.TODO(), stmt, dest, "bar")
require.NoError(t, err)
assert.Equal(t, 1, object.ID)
assert.Equal(t, "bar", object.Name)
}
// Exercise possible failure modes.
func TestUpsertObject_Error(t *testing.T) {
cases := []struct {
columns []string
values []any
error string
}{
{
[]string{},
[]any{},
"columns length is zero",
},
{
[]string{"id"},
[]any{2, "egg"},
"columns length does not match values length",
},
}
for _, c := range cases {
t.Run(c.error, func(t *testing.T) {
tx := newTxForObjects(t)
id, err := query.UpsertObject(tx, "foo", c.columns, c.values)
assert.Equal(t, int64(-1), id)
assert.EqualError(t, err, c.error)
})
}
}
// Insert a new row.
func TestUpsertObject_Insert(t *testing.T) {
tx := newTxForObjects(t)
id, err := query.UpsertObject(tx, "test", []string{"name"}, []any{"egg"})
require.NoError(t, err)
assert.Equal(t, int64(2), id)
objects := make([]struct {
ID int
Name string
}, 1)
object := objects[0]
count := 0
dest := func(scan func(dest ...any) error) error {
require.Equal(t, 0, count, "expected at most one row to be yielded")
count++
return scan(&object.ID, &object.Name)
}
sql := "SELECT id, name FROM test WHERE name=?"
err = query.Scan(context.TODO(), tx, sql, dest, "egg")
require.NoError(t, err)
assert.Equal(t, 2, object.ID)
assert.Equal(t, "egg", object.Name)
}
// Update an existing row.
func TestUpsertObject_Update(t *testing.T) {
tx := newTxForObjects(t)
id, err := query.UpsertObject(tx, "test", []string{"id", "name"}, []any{1, "egg"})
require.NoError(t, err)
assert.Equal(t, int64(1), id)
objects := make([]struct {
ID int
Name string
}, 1)
object := objects[0]
count := 0
dest := func(scan func(dest ...any) error) error {
require.Equal(t, 0, count, "expected at most one row to be yielded")
count++
return scan(&object.ID, &object.Name)
}
sql := "SELECT id, name FROM test WHERE name=?"
require.NoError(t, err)
err = query.Scan(context.TODO(), tx, sql, dest, "egg")
require.NoError(t, err)
assert.Equal(t, 1, object.ID)
assert.Equal(t, "egg", object.Name)
}
// Exercise possible failure modes.
func TestDeleteObject_Error(t *testing.T) {
tx := newTxForObjects(t)
deleted, err := query.DeleteObject(tx, "foo", 1)
assert.False(t, deleted)
assert.EqualError(t, err, "no such table: foo")
}
// If an row was actually deleted, the returned flag is true.
func TestDeleteObject_Deleted(t *testing.T) {
tx := newTxForObjects(t)
deleted, err := query.DeleteObject(tx, "test", 1)
assert.True(t, deleted)
assert.NoError(t, err)
}
// If no row was actually deleted, the returned flag is false.
func TestDeleteObject_NotDeleted(t *testing.T) {
tx := newTxForObjects(t)
deleted, err := query.DeleteObject(tx, "test", 1000)
assert.False(t, deleted)
assert.NoError(t, err)
}
// Return a new transaction against an in-memory SQLite database with a single
// test table populated with a few rows for testing object-related queries.
func newTxForObjects(t *testing.T) *sql.Tx {
db, err := sql.Open("sqlite3", ":memory:")
assert.NoError(t, err)
_, err = db.Exec("CREATE TABLE test (id INTEGER PRIMARY KEY, name TEXT)")
assert.NoError(t, err)
_, err = db.Exec("INSERT INTO test VALUES (0, 'foo'), (1, 'bar')")
assert.NoError(t, err)
tx, err := db.Begin()
assert.NoError(t, err)
return tx
}
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