159 lines
3.5 KiB
Go
159 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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float64JSON = []byte(`1.2345`)
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)
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func TestFloat64From(t *testing.T) {
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f := Float64From(1.2345)
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assertFloat64(t, f, "Float64From()")
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zero := Float64From(0)
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if !zero.Valid {
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t.Error("Float64From(0)", "is invalid, but should be valid")
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}
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}
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func TestFloat64FromPtr(t *testing.T) {
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n := float64(1.2345)
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iptr := &n
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f := Float64FromPtr(iptr)
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assertFloat64(t, f, "Float64FromPtr()")
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null := Float64FromPtr(nil)
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assertNullFloat64(t, null, "Float64FromPtr(nil)")
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}
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func TestUnmarshalFloat64(t *testing.T) {
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var f Float64
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err := json.Unmarshal(float64JSON, &f)
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maybePanic(err)
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assertFloat64(t, f, "float64 json")
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var null Float64
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err = json.Unmarshal(nullJSON, &null)
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maybePanic(err)
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assertNullFloat64(t, null, "null json")
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var badType Float64
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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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assertNullFloat64(t, badType, "wrong type json")
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var invalid Float64
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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 TestTextUnmarshalFloat64(t *testing.T) {
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var f Float64
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err := f.UnmarshalText([]byte("1.2345"))
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maybePanic(err)
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assertFloat64(t, f, "UnmarshalText() float64")
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var blank Float64
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err = blank.UnmarshalText([]byte(""))
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maybePanic(err)
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assertNullFloat64(t, blank, "UnmarshalText() empty float64")
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}
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func TestMarshalFloat64(t *testing.T) {
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f := Float64From(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 := NewFloat64(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 TestMarshalFloat64Text(t *testing.T) {
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f := Float64From(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 := NewFloat64(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 TestFloat64Pointer(t *testing.T) {
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f := Float64From(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 float64: %#v ≠ %v\n", "pointer", ptr, 1.2345)
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}
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null := NewFloat64(0, false)
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ptr = null.Ptr()
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if ptr != nil {
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t.Errorf("bad %s float64: %#v ≠ %s\n", "nil pointer", ptr, "nil")
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}
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}
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func TestFloat64IsZero(t *testing.T) {
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f := Float64From(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 := NewFloat64(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 := NewFloat64(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 TestFloat64SetValid(t *testing.T) {
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change := NewFloat64(0, false)
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assertNullFloat64(t, change, "SetValid()")
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change.SetValid(1.2345)
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assertFloat64(t, change, "SetValid()")
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}
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func TestFloat64Scan(t *testing.T) {
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var f Float64
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err := f.Scan(1.2345)
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maybePanic(err)
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assertFloat64(t, f, "scanned float64")
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var null Float64
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err = null.Scan(nil)
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maybePanic(err)
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assertNullFloat64(t, null, "scanned null")
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}
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func assertFloat64(t *testing.T, f Float64, from string) {
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if f.Float64 != 1.2345 {
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t.Errorf("bad %s float64: %f ≠ %f\n", from, f.Float64, 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 assertNullFloat64(t *testing.T, f Float64, 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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