162 lines
3.4 KiB
Go
162 lines
3.4 KiB
Go
package null
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import (
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"encoding/json"
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"testing"
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)
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var (
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byteJSON = []byte(`"b"`)
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)
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func TestByteFrom(t *testing.T) {
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i := ByteFrom('b')
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assertByte(t, i, "ByteFrom()")
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zero := ByteFrom(0)
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if !zero.Valid {
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t.Error("ByteFrom(0)", "is invalid, but should be valid")
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}
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}
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func TestByteFromPtr(t *testing.T) {
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n := byte('b')
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iptr := &n
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i := ByteFromPtr(iptr)
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assertByte(t, i, "ByteFromPtr()")
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null := ByteFromPtr(nil)
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assertNullByte(t, null, "ByteFromPtr(nil)")
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}
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func TestUnmarshalByte(t *testing.T) {
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var null Byte
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err := json.Unmarshal(nullJSON, &null)
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maybePanic(err)
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assertNullByte(t, null, "null json")
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var badType Byte
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err = json.Unmarshal(boolJSON, &badType)
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if err == nil {
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panic("err should not be nil")
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}
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assertNullByte(t, badType, "wrong type json")
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var invalid Byte
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err = invalid.UnmarshalJSON(invalidJSON)
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if _, ok := err.(*json.SyntaxError); !ok {
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t.Errorf("expected json.SyntaxError, not %T", err)
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}
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assertNullByte(t, invalid, "invalid json")
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}
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func TestUnmarshalNonByteegerNumber(t *testing.T) {
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var i Byte
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err := json.Unmarshal(float64JSON, &i)
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if err == nil {
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panic("err should be present; non-integer number coerced to int")
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}
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}
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func TestTextUnmarshalByte(t *testing.T) {
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var i Byte
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err := i.UnmarshalText([]byte("b"))
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maybePanic(err)
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assertByte(t, i, "UnmarshalText() int")
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var blank Byte
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err = blank.UnmarshalText([]byte(""))
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maybePanic(err)
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assertNullByte(t, blank, "UnmarshalText() empty int")
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}
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func TestMarshalByte(t *testing.T) {
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i := ByteFrom('b')
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data, err := json.Marshal(i)
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maybePanic(err)
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assertJSONEquals(t, data, `"b"`, "non-empty json marshal")
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// invalid values should be encoded as null
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null := NewByte(0, false)
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data, err = json.Marshal(null)
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maybePanic(err)
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assertJSONEquals(t, data, "null", "null json marshal")
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}
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func TestMarshalByteText(t *testing.T) {
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i := ByteFrom('b')
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data, err := i.MarshalText()
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maybePanic(err)
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assertJSONEquals(t, data, "b", "non-empty text marshal")
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// invalid values should be encoded as null
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null := NewByte(0, false)
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data, err = null.MarshalText()
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maybePanic(err)
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assertJSONEquals(t, data, "", "null text marshal")
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}
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func TestBytePointer(t *testing.T) {
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i := ByteFrom('b')
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ptr := i.Ptr()
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if *ptr != 'b' {
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t.Errorf("bad %s int: %#v ≠ %d\n", "pointer", ptr, 'b')
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}
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null := NewByte(0, false)
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ptr = null.Ptr()
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if ptr != nil {
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t.Errorf("bad %s int: %#v ≠ %s\n", "nil pointer", ptr, "nil")
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}
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}
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func TestByteIsZero(t *testing.T) {
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i := ByteFrom('b')
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if i.IsZero() {
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t.Errorf("IsZero() should be false")
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}
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null := NewByte(0, false)
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if !null.IsZero() {
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t.Errorf("IsZero() should be true")
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}
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zero := NewByte(0, true)
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if zero.IsZero() {
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t.Errorf("IsZero() should be false")
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}
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}
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func TestByteSetValid(t *testing.T) {
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change := NewByte(0, false)
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assertNullByte(t, change, "SetValid()")
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change.SetValid('b')
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assertByte(t, change, "SetValid()")
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}
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func TestByteScan(t *testing.T) {
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var i Byte
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err := i.Scan("b")
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maybePanic(err)
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assertByte(t, i, "scanned int")
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var null Byte
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err = null.Scan(nil)
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maybePanic(err)
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assertNullByte(t, null, "scanned null")
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}
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func assertByte(t *testing.T, i Byte, from string) {
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if i.Byte != 'b' {
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t.Errorf("bad %s int: %d ≠ %d\n", from, i.Byte, 'b')
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}
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if !i.Valid {
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t.Error(from, "is invalid, but should be valid")
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}
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}
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func assertNullByte(t *testing.T, i Byte, from string) {
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if i.Valid {
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t.Error(from, "is valid, but should be invalid")
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}
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}
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