Add more unit tests.

execution/internal/null_types.go

@@ -62,7 +62,7 @@ func (nt *NullTime) Scan(value interface{}) (err error) {
 		nt.Time, nt.Valid = parseTime(v)
 		return
 	default:
-		return fmt.Errorf("can't scan time from %v", value)
+		return fmt.Errorf("can't scan time.Time from %v", value)
 	}
 }
 

execution/internal/null_types_test.go

@@ -0,0 +1,147 @@
+package internal
+
+import (
+	"fmt"
+	"gotest.tools/assert"
+	"testing"
+	"time"
+)
+
+func TestNullByteArray(t *testing.T) {
+	var array NullByteArray
+
+	assert.NilError(t, array.Scan(nil))
+	assert.Equal(t, array.Valid, false)
+
+	assert.NilError(t, array.Scan([]byte("bytea")))
+	assert.Equal(t, array.Valid, true)
+	assert.Equal(t, string(array.ByteArray), string([]byte("bytea")))
+
+	assert.Error(t, array.Scan(12), "can't scan []byte from 12")
+}
+
+func TestNullTime(t *testing.T) {
+	var array NullTime
+
+	assert.NilError(t, array.Scan(nil))
+	assert.Equal(t, array.Valid, false)
+
+	time := time.Now()
+	assert.NilError(t, array.Scan(time))
+	assert.Equal(t, array.Valid, true)
+	value, _ := array.Value()
+	assert.Equal(t, value, time)
+
+	assert.NilError(t, array.Scan([]byte("13:10:11")))
+	assert.Equal(t, array.Valid, true)
+	value, _ = array.Value()
+	assert.Equal(t, fmt.Sprintf("%v", value), "0000-01-01 13:10:11 +0000 UTC")
+
+	assert.NilError(t, array.Scan("13:10:11"))
+	assert.Equal(t, array.Valid, true)
+	value, _ = array.Value()
+	assert.Equal(t, fmt.Sprintf("%v", value), "0000-01-01 13:10:11 +0000 UTC")
+
+	assert.Error(t, array.Scan(12), "can't scan time.Time from 12")
+}
+
+func TestNullInt8(t *testing.T) {
+	var array NullInt8
+
+	assert.NilError(t, array.Scan(nil))
+	assert.Equal(t, array.Valid, false)
+
+	assert.NilError(t, array.Scan(int64(11)))
+	assert.Equal(t, array.Valid, true)
+	value, _ := array.Value()
+	assert.Equal(t, value, int8(11))
+
+	assert.Error(t, array.Scan("text"), "can't scan int8 from text")
+}
+
+func TestNullInt16(t *testing.T) {
+	var array NullInt16
+
+	assert.NilError(t, array.Scan(nil))
+	assert.Equal(t, array.Valid, false)
+
+	assert.NilError(t, array.Scan(int64(11)))
+	assert.Equal(t, array.Valid, true)
+	value, _ := array.Value()
+	assert.Equal(t, value, int16(11))
+
+	assert.NilError(t, array.Scan(int16(20)))
+	assert.Equal(t, array.Valid, true)
+	value, _ = array.Value()
+	assert.Equal(t, value, int16(20))
+
+	assert.NilError(t, array.Scan(int8(30)))
+	assert.Equal(t, array.Valid, true)
+	value, _ = array.Value()
+	assert.Equal(t, value, int16(30))
+
+	assert.NilError(t, array.Scan(uint8(30)))
+	assert.Equal(t, array.Valid, true)
+	value, _ = array.Value()
+	assert.Equal(t, value, int16(30))
+
+	assert.Error(t, array.Scan("text"), "can't scan int16 from text")
+}
+
+func TestNullInt32(t *testing.T) {
+	var array NullInt32
+
+	assert.NilError(t, array.Scan(nil))
+	assert.Equal(t, array.Valid, false)
+
+	assert.NilError(t, array.Scan(int64(11)))
+	assert.Equal(t, array.Valid, true)
+	value, _ := array.Value()
+	assert.Equal(t, value, int32(11))
+
+	assert.NilError(t, array.Scan(int32(32)))
+	assert.Equal(t, array.Valid, true)
+	value, _ = array.Value()
+	assert.Equal(t, value, int32(32))
+
+	assert.NilError(t, array.Scan(int16(20)))
+	assert.Equal(t, array.Valid, true)
+	value, _ = array.Value()
+	assert.Equal(t, value, int32(20))
+
+	assert.NilError(t, array.Scan(uint16(16)))
+	assert.Equal(t, array.Valid, true)
+	value, _ = array.Value()
+	assert.Equal(t, value, int32(16))
+
+	assert.NilError(t, array.Scan(int8(30)))
+	assert.Equal(t, array.Valid, true)
+	value, _ = array.Value()
+	assert.Equal(t, value, int32(30))
+
+	assert.NilError(t, array.Scan(uint8(30)))
+	assert.Equal(t, array.Valid, true)
+	value, _ = array.Value()
+	assert.Equal(t, value, int32(30))
+
+	assert.Error(t, array.Scan("text"), "can't scan int32 from text")
+}
+
+func TestNullFloat32(t *testing.T) {
+	var array NullFloat32
+
+	assert.NilError(t, array.Scan(nil))
+	assert.Equal(t, array.Valid, false)
+
+	assert.NilError(t, array.Scan(float64(64)))
+	assert.Equal(t, array.Valid, true)
+	value, _ := array.Value()
+	assert.Equal(t, value, float32(64))
+
+	assert.NilError(t, array.Scan(float32(32)))
+	assert.Equal(t, array.Valid, true)
+	value, _ = array.Value()
+	assert.Equal(t, value, float32(32))
+
+	assert.Error(t, array.Scan(12), "can't scan float32 from 12")
+}