158 lines
3.5 KiB
Go
158 lines
3.5 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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float32JSON = []byte(`1.2345`)
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)
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func TestFloat32From(t *testing.T) {
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f := Float32From(1.2345)
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assertFloat32(t, f, "Float32From()")
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zero := Float32From(0)
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if !zero.Valid {
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t.Error("Float32From(0)", "is invalid, but should be valid")
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}
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}
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func TestFloat32FromPtr(t *testing.T) {
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n := float32(1.2345)
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iptr := &n
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f := Float32FromPtr(iptr)
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assertFloat32(t, f, "Float32FromPtr()")
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null := Float32FromPtr(nil)
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assertNullFloat32(t, null, "Float32FromPtr(nil)")
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}
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func TestUnmarshalFloat32(t *testing.T) {
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var f Float32
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err := json.Unmarshal(float32JSON, &f)
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maybePanic(err)
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assertFloat32(t, f, "float32 json")
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var null Float32
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err = json.Unmarshal(nullJSON, &null)
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maybePanic(err)
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assertNullFloat32(t, null, "null json")
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var badType Float32
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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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assertNullFloat32(t, badType, "wrong type json")
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var invalid Float32
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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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}
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func TestTextUnmarshalFloat32(t *testing.T) {
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var f Float32
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err := f.UnmarshalText([]byte("1.2345"))
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maybePanic(err)
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assertFloat32(t, f, "UnmarshalText() float32")
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var blank Float32
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err = blank.UnmarshalText([]byte(""))
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maybePanic(err)
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assertNullFloat32(t, blank, "UnmarshalText() empty float32")
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}
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func TestMarshalFloat32(t *testing.T) {
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f := Float32From(1.2345)
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data, err := json.Marshal(f)
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maybePanic(err)
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assertJSONEquals(t, data, "1.2345", "non-empty json marshal")
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// invalid values should be encoded as null
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null := NewFloat32(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 TestMarshalFloat32Text(t *testing.T) {
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f := Float32From(1.2345)
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data, err := f.MarshalText()
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maybePanic(err)
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assertJSONEquals(t, data, "1.2345", "non-empty text marshal")
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// invalid values should be encoded as null
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null := NewFloat32(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 TestFloat32Pointer(t *testing.T) {
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f := Float32From(1.2345)
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ptr := f.Ptr()
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if *ptr != 1.2345 {
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t.Errorf("bad %s float32: %#v ≠ %v\n", "pointer", ptr, 1.2345)
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}
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null := NewFloat32(0, false)
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ptr = null.Ptr()
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if ptr != nil {
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t.Errorf("bad %s float32: %#v ≠ %s\n", "nil pointer", ptr, "nil")
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}
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}
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func TestFloat32IsZero(t *testing.T) {
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f := Float32From(1.2345)
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if f.IsZero() {
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t.Errorf("IsZero() should be false")
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}
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null := NewFloat32(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 := NewFloat32(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 TestFloat32SetValid(t *testing.T) {
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change := NewFloat32(0, false)
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assertNullFloat32(t, change, "SetValid()")
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change.SetValid(1.2345)
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assertFloat32(t, change, "SetValid()")
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}
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func TestFloat32Scan(t *testing.T) {
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var f Float32
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err := f.Scan(1.2345)
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maybePanic(err)
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assertFloat32(t, f, "scanned float32")
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var null Float32
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err = null.Scan(nil)
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maybePanic(err)
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assertNullFloat32(t, null, "scanned null")
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}
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func assertFloat32(t *testing.T, f Float32, from string) {
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if f.Float32 != 1.2345 {
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t.Errorf("bad %s float32: %f ≠ %f\n", from, f.Float32, 1.2345)
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}
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if !f.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 assertNullFloat32(t *testing.T, f Float32, from string) {
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if f.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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