func TestQueryRowCoreTypes(t *testing.T) {
t.Parallel()
conn := mustConnect(t, *defaultConnConfig)
defer closeConn(t, conn)
type allTypes struct {
s string
f32 float32
f64 float64
b bool
t time.Time
oid pgx.Oid
}
var actual, zero allTypes
tests := []struct {
sql string
queryArgs []interface{}
scanArgs []interface{}
expected allTypes
}{
{"select $1::text", []interface{}{"Jack"}, []interface{}{&actual.s}, allTypes{s: "Jack"}},
{"select $1::float4", []interface{}{float32(1.23)}, []interface{}{&actual.f32}, allTypes{f32: 1.23}},
{"select $1::float8", []interface{}{float64(1.23)}, []interface{}{&actual.f64}, allTypes{f64: 1.23}},
{"select $1::bool", []interface{}{true}, []interface{}{&actual.b}, allTypes{b: true}},
{"select $1::timestamptz", []interface{}{time.Unix(123, 5000)}, []interface{}{&actual.t}, allTypes{t: time.Unix(123, 5000)}},
{"select $1::timestamp", []interface{}{time.Date(2010, 1, 2, 3, 4, 5, 0, time.Local)}, []interface{}{&actual.t}, allTypes{t: time.Date(2010, 1, 2, 3, 4, 5, 0, time.Local)}},
{"select $1::date", []interface{}{time.Date(1987, 1, 2, 0, 0, 0, 0, time.Local)}, []interface{}{&actual.t}, allTypes{t: time.Date(1987, 1, 2, 0, 0, 0, 0, time.Local)}},
{"select $1::oid", []interface{}{pgx.Oid(42)}, []interface{}{&actual.oid}, allTypes{oid: 42}},
}
for i, tt := range tests {
actual = zero
err := conn.QueryRow(tt.sql, tt.queryArgs...).Scan(tt.scanArgs...)
if err != nil {
t.Errorf("%d. Unexpected failure: %v (sql -> %v, queryArgs -> %v)", i, err, tt.sql, tt.queryArgs)
}
if actual != tt.expected {
t.Errorf("%d. Expected %v, got %v (sql -> %v, queryArgs -> %v)", i, tt.expected, actual, tt.sql, tt.queryArgs)
}
ensureConnValid(t, conn)
// Check that Scan errors when a core type is null
err = conn.QueryRow(tt.sql, nil).Scan(tt.scanArgs...)
if err == nil {
t.Errorf("%d. Expected null to cause error, but it didn't (sql -> %v)", i, tt.sql)
}
if err != nil && !strings.Contains(err.Error(), "Cannot decode null") {
t.Errorf(`%d. Expected null to cause error "Cannot decode null..." but it was %v (sql -> %v)`, i, err, tt.sql)
}
ensureConnValid(t, conn)
}
}
func TestConnQueryValues(t *testing.T) {
t.Parallel()
conn := mustConnect(t, *defaultConnConfig)
defer closeConn(t, conn)
var rowCount int32
rows, err := conn.Query("select 'foo'::text, 'bar'::varchar, n, null, n::oid from generate_series(1,$1) n", 10)
if err != nil {
t.Fatalf("conn.Query failed: %v", err)
}
defer rows.Close()
for rows.Next() {
rowCount++
values, err := rows.Values()
if err != nil {
t.Fatalf("rows.Values failed: %v", err)
}
if len(values) != 5 {
t.Errorf("Expected rows.Values to return 5 values, but it returned %d", len(values))
}
if values[0] != "foo" {
t.Errorf(`Expected values[0] to be "foo", but it was %v`, values[0])
}
if values[1] != "bar" {
t.Errorf(`Expected values[1] to be "bar", but it was %v`, values[1])
}
if values[2] != rowCount {
t.Errorf(`Expected values[2] to be %d, but it was %d`, rowCount, values[2])
}
if values[3] != nil {
t.Errorf(`Expected values[3] to be %v, but it was %d`, nil, values[3])
}
if values[4] != pgx.Oid(rowCount) {
t.Errorf(`Expected values[4] to be %d, but it was %d`, rowCount, values[4])
}
}
if rows.Err() != nil {
t.Fatalf("conn.Query failed: %v", err)
}
if rowCount != 10 {
t.Error("Select called onDataRow wrong number of times")
}
}