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query_test.go
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package pgxmock
import (
"context"
"fmt"
"testing"
)
func ExampleQueryMatcher() {
// configure to use case sensitive SQL query matcher
// instead of default regular expression matcher
mock, err := NewConn(QueryMatcherOption(QueryMatcherEqual))
if err != nil {
fmt.Println("failed to open pgxmock database:", err)
}
// defer db.Close()
rows := NewRows([]string{"id", "title"}).
AddRow(1, "one").
AddRow(2, "two")
mock.ExpectQuery("SELECT * FROM users").WillReturnRows(rows)
rs, err := mock.Query(context.Background(), "SELECT * FROM users")
if err != nil {
fmt.Println("failed to match expected query")
return
}
defer rs.Close()
for rs.Next() {
var id int
var title string
_ = rs.Scan(&id, &title)
fmt.Println("scanned id:", id, "and title:", title)
}
if rs.Err() != nil {
fmt.Println("got rows error:", rs.Err())
}
// Output: scanned id: 1 and title: one
// scanned id: 2 and title: two
}
func ExampleQueryMatcherAny() {
mock, err := NewConn(QueryMatcherOption(QueryMatcherAny))
if err != nil {
fmt.Println("failed to open pgxmock database:", err)
}
// defer db.Close()
rows := NewRows([]string{"id", "title"}).
AddRow(1, "one").
AddRow(2, "two")
mock.ExpectQuery("").WillReturnRows(rows)
rs, err := mock.Query(context.Background(), "SELECT * FROM users")
if err != nil {
fmt.Println("failed to match expected query")
return
}
defer rs.Close()
for rs.Next() {
var id int
var title string
_ = rs.Scan(&id, &title)
fmt.Println("scanned id:", id, "and title:", title)
}
if rs.Err() != nil {
fmt.Println("got rows error:", rs.Err())
}
// Output: scanned id: 1 and title: one
// scanned id: 2 and title: two
}
func TestQueryStringStripping(t *testing.T) {
assert := func(actual, expected string) {
if res := stripQuery(actual); res != expected {
t.Errorf("Expected '%s' to be '%s', but got '%s'", actual, expected, res)
}
}
assert(" SELECT 1", "SELECT 1")
assert("SELECT 1 FROM d", "SELECT 1 FROM d")
assert(`
SELECT c
FROM D
`, "SELECT c FROM D")
assert("UPDATE (.+) SET ", "UPDATE (.+) SET")
}
func TestQueryMatcherRegexp(t *testing.T) {
type testCase struct {
expected string
actual string
err error
}
cases := []testCase{
{"?\\l", "SEL", fmt.Errorf("error parsing regexp: missing argument to repetition operator: `?`")},
{"SELECT (.+) FROM users", "SELECT name, email FROM users WHERE id = ?", nil},
{"Select (.+) FROM users", "SELECT name, email FROM users WHERE id = ?", fmt.Errorf(`could not match actual sql: "SELECT name, email FROM users WHERE id = ?" with expected regexp "Select (.+) FROM users"`)},
{"SELECT (.+) FROM\nusers", "SELECT name, email\n FROM users\n WHERE id = ?", nil},
}
for i, c := range cases {
err := QueryMatcherRegexp.Match(c.expected, c.actual)
if err == nil && c.err != nil {
t.Errorf(`got no error, but expected "%v" at %d case`, c.err, i)
continue
}
if err != nil && c.err == nil {
t.Errorf(`got unexpected error "%v" at %d case`, err, i)
continue
}
if err == nil {
continue
}
if err.Error() != c.err.Error() {
t.Errorf(`expected error "%v", but got "%v" at %d case`, c.err, err, i)
}
}
}
func TestQueryMatcherEqual(t *testing.T) {
type testCase struct {
expected string
actual string
err error
}
cases := []testCase{
{"SELECT name, email FROM users WHERE id = ?", "SELECT name, email\n FROM users\n WHERE id = ?", nil},
{"SELECT", "Select", fmt.Errorf(`actual sql: "Select" does not equal to expected "SELECT"`)},
{"SELECT from users", "SELECT from table", fmt.Errorf(`actual sql: "SELECT from table" does not equal to expected "SELECT from users"`)},
}
for i, c := range cases {
err := QueryMatcherEqual.Match(c.expected, c.actual)
if err == nil && c.err != nil {
t.Errorf(`got no error, but expected "%v" at %d case`, c.err, i)
continue
}
if err != nil && c.err == nil {
t.Errorf(`got unexpected error "%v" at %d case`, err, i)
continue
}
if err == nil {
continue
}
if err.Error() != c.err.Error() {
t.Errorf(`expected error "%v", but got "%v" at %d case`, c.err, err, i)
}
}
}
func TestQueryMatcherAny(t *testing.T) {
err := QueryMatcherAny.Match("foo", "SELECT * FROM users")
if err != nil {
t.Errorf("expected no error, but got %v", err)
}
}