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package tui
import (
"testing"
)
func TestNewStyle(t *testing.T) {
s := NewStyle()
if !s.Fg.IsDefault() {
t.Error("NewStyle().Fg should be default color")
}
if !s.Bg.IsDefault() {
t.Error("NewStyle().Bg should be default color")
}
if s.Attrs != AttrNone {
t.Errorf("NewStyle().Attrs = %v, want AttrNone", s.Attrs)
}
}
func TestStyle_Foreground(t *testing.T) {
s := NewStyle().Foreground(Red)
if !s.Fg.Equal(Red) {
t.Errorf("Foreground(Red).Fg = %v, want Red", s.Fg)
}
if !s.Bg.IsDefault() {
t.Error("Foreground() should not affect background")
}
}
func TestStyle_Background(t *testing.T) {
s := NewStyle().Background(Blue)
if !s.Bg.Equal(Blue) {
t.Errorf("Background(Blue).Bg = %v, want Blue", s.Bg)
}
if !s.Fg.IsDefault() {
t.Error("Background() should not affect foreground")
}
}
func TestStyle_FluentChaining(t *testing.T) {
s := NewStyle().
Foreground(Red).
Background(Blue).
Bold().
Italic().
Underline()
if !s.Fg.Equal(Red) {
t.Errorf("chained style Fg = %v, want Red", s.Fg)
}
if !s.Bg.Equal(Blue) {
t.Errorf("chained style Bg = %v, want Blue", s.Bg)
}
if !s.HasAttr(AttrBold) {
t.Error("chained style should have AttrBold")
}
if !s.HasAttr(AttrItalic) {
t.Error("chained style should have AttrItalic")
}
if !s.HasAttr(AttrUnderline) {
t.Error("chained style should have AttrUnderline")
}
}
func TestStyle_AllAttributes(t *testing.T) {
type tc struct {
method func(Style) Style
attr Attr
}
tests := map[string]tc{
"Bold": {method: Style.Bold, attr: AttrBold},
"Dim": {method: Style.Dim, attr: AttrDim},
"Italic": {method: Style.Italic, attr: AttrItalic},
"Underline": {method: Style.Underline, attr: AttrUnderline},
"Blink": {method: Style.Blink, attr: AttrBlink},
"Reverse": {method: Style.Reverse, attr: AttrReverse},
"Strikethrough": {method: Style.Strikethrough, attr: AttrStrikethrough},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
s := tt.method(NewStyle())
if !s.HasAttr(tt.attr) {
t.Errorf("%s() should set %v attribute", name, tt.attr)
}
})
}
}
func TestStyle_Equal(t *testing.T) {
type tc struct {
a, b Style
equal bool
}
tests := map[string]tc{
"empty styles": {
a: NewStyle(),
b: NewStyle(),
equal: true,
},
"same foreground": {
a: NewStyle().Foreground(Red),
b: NewStyle().Foreground(Red),
equal: true,
},
"different foreground": {
a: NewStyle().Foreground(Red),
b: NewStyle().Foreground(Blue),
equal: false,
},
"same background": {
a: NewStyle().Background(Green),
b: NewStyle().Background(Green),
equal: true,
},
"different background": {
a: NewStyle().Background(Green),
b: NewStyle().Background(Yellow),
equal: false,
},
"same attributes": {
a: NewStyle().Bold().Italic(),
b: NewStyle().Bold().Italic(),
equal: true,
},
"different attributes": {
a: NewStyle().Bold(),
b: NewStyle().Italic(),
equal: false,
},
"full match": {
a: NewStyle().Foreground(Red).Background(Blue).Bold().Underline(),
b: NewStyle().Foreground(Red).Background(Blue).Bold().Underline(),
equal: true,
},
"full mismatch on attr": {
a: NewStyle().Foreground(Red).Background(Blue).Bold(),
b: NewStyle().Foreground(Red).Background(Blue).Italic(),
equal: false,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
if got := tt.a.Equal(tt.b); got != tt.equal {
t.Errorf("Equal() = %v, want %v", got, tt.equal)
}
if got := tt.b.Equal(tt.a); got != tt.equal {
t.Errorf("(symmetric) Equal() = %v, want %v", got, tt.equal)
}
})
}
}
func TestStyle_HasAttr(t *testing.T) {
s := NewStyle().Bold().Italic()
if !s.HasAttr(AttrBold) {
t.Error("HasAttr(AttrBold) should return true")
}
if !s.HasAttr(AttrItalic) {
t.Error("HasAttr(AttrItalic) should return true")
}
if !s.HasAttr(AttrBold | AttrItalic) {
t.Error("HasAttr(AttrBold|AttrItalic) should return true")
}
if s.HasAttr(AttrUnderline) {
t.Error("HasAttr(AttrUnderline) should return false")
}
if !s.HasAttr(AttrNone) {
t.Error("HasAttr(AttrNone) should return true")
}
}
func TestStyle_Immutability(t *testing.T) {
original := NewStyle()
modified := original.Bold().Foreground(Red)
if original.HasAttr(AttrBold) {
t.Error("original style should not be modified")
}
if !original.Fg.IsDefault() {
t.Error("original style foreground should be unchanged")
}
if !modified.HasAttr(AttrBold) {
t.Error("modified style should have bold")
}
if !modified.Fg.Equal(Red) {
t.Error("modified style should have red foreground")
}
}
func TestAttr_BitfieldValues(t *testing.T) {
type tc struct {
attr Attr
}
tests := map[string]tc{
"Bold": {attr: AttrBold},
"Dim": {attr: AttrDim},
"Italic": {attr: AttrItalic},
"Underline": {attr: AttrUnderline},
"Blink": {attr: AttrBlink},
"Reverse": {attr: AttrReverse},
"Strikethrough": {attr: AttrStrikethrough},
}
var allAttrs []Attr
var attrNames []string
for name, tt := range tests {
allAttrs = append(allAttrs, tt.attr)
attrNames = append(attrNames, name)
}
for i, a := range allAttrs {
for j, b := range allAttrs {
if i != j && a&b != 0 {
t.Errorf("Attr %s and %s overlap in bits", attrNames[i], attrNames[j])
}
}
}
var combined Attr
for _, a := range allAttrs {
combined |= a
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
if combined&tt.attr == 0 {
t.Errorf("Combined attrs missing %v", tt.attr)
}
})
}
}
func TestStyle_ZeroValue(t *testing.T) {
var s Style
if !s.Equal(NewStyle()) {
t.Error("zero value Style should equal NewStyle()")
}
if !s.Fg.IsDefault() {
t.Error("zero value Style.Fg should be default")
}
if !s.Bg.IsDefault() {
t.Error("zero value Style.Bg should be default")
}
if s.Attrs != AttrNone {
t.Errorf("zero value Style.Attrs = %v, want AttrNone", s.Attrs)
}
}
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