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package layout
import "testing"
func TestNewRect(t *testing.T) {
r := NewRect(5, 10, 20, 15)
if r.X != 5 {
t.Errorf("NewRect().X = %d, want 5", r.X)
}
if r.Y != 10 {
t.Errorf("NewRect().Y = %d, want 10", r.Y)
}
if r.Width != 20 {
t.Errorf("NewRect().Width = %d, want 20", r.Width)
}
if r.Height != 15 {
t.Errorf("NewRect().Height = %d, want 15", r.Height)
}
}
func TestRect_RightBottom(t *testing.T) {
type tc struct {
rect Rect
right int
bottom int
}
tests := map[string]tc{
"standard rect": {
rect: NewRect(5, 10, 20, 15),
right: 25,
bottom: 25,
},
"zero position": {
rect: NewRect(0, 0, 10, 10),
right: 10,
bottom: 10,
},
"negative position": {
rect: NewRect(-5, -5, 10, 10),
right: 5,
bottom: 5,
},
"zero size": {
rect: NewRect(5, 5, 0, 0),
right: 5,
bottom: 5,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
if got := tt.rect.Right(); got != tt.right {
t.Errorf("Right() = %d, want %d", got, tt.right)
}
if got := tt.rect.Bottom(); got != tt.bottom {
t.Errorf("Bottom() = %d, want %d", got, tt.bottom)
}
})
}
}
func TestRect_Area(t *testing.T) {
type tc struct {
rect Rect
area int
}
tests := map[string]tc{
"standard rect": {
rect: NewRect(0, 0, 10, 5),
area: 50,
},
"zero width": {
rect: NewRect(0, 0, 0, 10),
area: 0,
},
"zero height": {
rect: NewRect(0, 0, 10, 0),
area: 0,
},
"negative width": {
rect: NewRect(0, 0, -5, 10),
area: 0,
},
"negative height": {
rect: NewRect(0, 0, 10, -5),
area: 0,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
if got := tt.rect.Area(); got != tt.area {
t.Errorf("Area() = %d, want %d", got, tt.area)
}
})
}
}
func TestRect_IsEmpty(t *testing.T) {
type tc struct {
rect Rect
isEmpty bool
}
tests := map[string]tc{
"standard rect": {
rect: NewRect(0, 0, 10, 5),
isEmpty: false,
},
"zero width": {
rect: NewRect(0, 0, 0, 10),
isEmpty: true,
},
"zero height": {
rect: NewRect(0, 0, 10, 0),
isEmpty: true,
},
"negative width": {
rect: NewRect(0, 0, -5, 10),
isEmpty: true,
},
"negative height": {
rect: NewRect(0, 0, 10, -5),
isEmpty: true,
},
"zero rect": {
rect: Rect{},
isEmpty: true,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
if got := tt.rect.IsEmpty(); got != tt.isEmpty {
t.Errorf("IsEmpty() = %v, want %v", got, tt.isEmpty)
}
})
}
}
func TestRect_Contains(t *testing.T) {
type tc struct {
rect Rect
x, y int
contains bool
}
r := NewRect(10, 20, 30, 40)
tests := map[string]tc{
"point inside": {
rect: r,
x: 20,
y: 30,
contains: true,
},
"top-left corner (inside)": {
rect: r,
x: 10,
y: 20,
contains: true,
},
"right edge (outside)": {
rect: r,
x: 40,
y: 30,
contains: false,
},
"bottom edge (outside)": {
rect: r,
x: 20,
y: 60,
contains: false,
},
"bottom-right corner (outside)": {
rect: r,
x: 40,
y: 60,
contains: false,
},
"point left of rect": {
rect: r,
x: 5,
y: 30,
contains: false,
},
"point above rect": {
rect: r,
x: 20,
y: 10,
contains: false,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
if got := tt.rect.Contains(tt.x, tt.y); got != tt.contains {
t.Errorf("Contains(%d, %d) = %v, want %v", tt.x, tt.y, got, tt.contains)
}
})
}
}
func TestRect_ContainsRect(t *testing.T) {
type tc struct {
outer Rect
inner Rect
contains bool
}
tests := map[string]tc{
"fully contained": {
outer: NewRect(0, 0, 100, 100),
inner: NewRect(10, 10, 20, 20),
contains: true,
},
"same rect": {
outer: NewRect(10, 10, 20, 20),
inner: NewRect(10, 10, 20, 20),
contains: true,
},
"partial overlap left": {
outer: NewRect(10, 10, 20, 20),
inner: NewRect(5, 15, 10, 10),
contains: false,
},
"disjoint": {
outer: NewRect(0, 0, 10, 10),
inner: NewRect(20, 20, 10, 10),
contains: false,
},
"empty inner": {
outer: NewRect(0, 0, 10, 10),
inner: NewRect(5, 5, 0, 0),
contains: true,
},
"empty outer": {
outer: NewRect(0, 0, 0, 0),
inner: NewRect(0, 0, 10, 10),
contains: false,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
if got := tt.outer.ContainsRect(tt.inner); got != tt.contains {
t.Errorf("ContainsRect() = %v, want %v", got, tt.contains)
}
})
}
}
func TestRect_Inset(t *testing.T) {
type tc struct {
rect Rect
edges Edges
expectedX, expectedY int
expectedWidth, expectedHeight int
}
tests := map[string]tc{
"uniform positive inset": {
rect: NewRect(10, 10, 100, 100),
edges: EdgeAll(5),
expectedX: 15,
expectedY: 15,
expectedWidth: 90,
expectedHeight: 90,
},
"different insets": {
rect: NewRect(0, 0, 100, 100),
edges: EdgeTRBL(10, 20, 30, 40),
expectedX: 40,
expectedY: 10,
expectedWidth: 40,
expectedHeight: 60,
},
"negative insets (expand)": {
rect: NewRect(10, 10, 50, 50),
edges: EdgeAll(-5),
expectedX: 5,
expectedY: 5,
expectedWidth: 60,
expectedHeight: 60,
},
"inset to zero": {
rect: NewRect(0, 0, 10, 10),
edges: EdgeAll(5),
expectedX: 5,
expectedY: 5,
expectedWidth: 0,
expectedHeight: 0,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
got := tt.rect.Inset(tt.edges)
if got.X != tt.expectedX || got.Y != tt.expectedY ||
got.Width != tt.expectedWidth || got.Height != tt.expectedHeight {
t.Errorf("Inset() = {%d, %d, %d, %d}, want {%d, %d, %d, %d}",
got.X, got.Y, got.Width, got.Height,
tt.expectedX, tt.expectedY, tt.expectedWidth, tt.expectedHeight)
}
})
}
}
func TestRect_Outset(t *testing.T) {
type tc struct {
rect Rect
edges Edges
expectedX, expectedY int
expectedWidth, expectedHeight int
}
tests := map[string]tc{
"uniform positive outset": {
rect: NewRect(10, 10, 100, 100),
edges: EdgeAll(5),
expectedX: 5,
expectedY: 5,
expectedWidth: 110,
expectedHeight: 110,
},
"different outsets": {
rect: NewRect(50, 50, 100, 100),
edges: EdgeTRBL(10, 20, 30, 40),
expectedX: 10,
expectedY: 40,
expectedWidth: 160,
expectedHeight: 140,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
got := tt.rect.Outset(tt.edges)
if got.X != tt.expectedX || got.Y != tt.expectedY ||
got.Width != tt.expectedWidth || got.Height != tt.expectedHeight {
t.Errorf("Outset() = {%d, %d, %d, %d}, want {%d, %d, %d, %d}",
got.X, got.Y, got.Width, got.Height,
tt.expectedX, tt.expectedY, tt.expectedWidth, tt.expectedHeight)
}
})
}
}
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