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event_test.go
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event_test.go
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// Copyright 2020 Frederik Zipp. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package canvas
import (
"strings"
"testing"
"github.com/google/go-cmp/cmp"
)
func TestModifierKeys(t *testing.T) {
type modifierKeyStates struct {
altKey bool
shiftKey bool
ctrlKey bool
metaKey bool
}
tests := []struct {
name string
modKeys ModifierKeys
want modifierKeyStates
}{
{
name: "AltKey",
modKeys: 0b0001,
want: modifierKeyStates{altKey: true},
},
{
name: "ShiftKey",
modKeys: 0b0010,
want: modifierKeyStates{shiftKey: true},
},
{
name: "CtrlKey",
modKeys: 0b0100,
want: modifierKeyStates{ctrlKey: true},
},
{
name: "MetaKey",
modKeys: 0b1000,
want: modifierKeyStates{metaKey: true},
},
{
name: "Multiple modifier keys",
modKeys: 0b1111,
want: modifierKeyStates{
altKey: true,
shiftKey: true,
ctrlKey: true,
metaKey: true,
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := modifierKeyStates{
altKey: tt.modKeys.AltKey(),
shiftKey: tt.modKeys.ShiftKey(),
ctrlKey: tt.modKeys.CtrlKey(),
metaKey: tt.modKeys.MetaKey(),
}
if got != tt.want {
t.Errorf("\ngot : %#v\nwant: %#v", got, tt.want)
}
})
}
}
func TestDecodeEvent(t *testing.T) {
tests := []struct {
name string
p []byte
want Event
}{
{
"MouseMoveEvent",
[]byte{
0x01, // Event type
0b00000000, // Buttons
0x00, 0x00, 0x00, 0xc8, // X
0x00, 0x00, 0x00, 0x96, // Y
0b00000101, // Modifier keys
},
MouseMoveEvent{
MouseEvent{
Buttons: ButtonNone,
X: 200,
Y: 150,
Mod: modKeyCtrl | modKeyAlt,
},
},
},
{
"MouseDownEvent",
[]byte{
0x02, // Event type
0b00010000, // Buttons
0x00, 0x00, 0x02, 0xfc, // X
0x00, 0x00, 0x03, 0xff, // Y
0b00001000, // Modifier keys
},
MouseDownEvent{
MouseEvent{
Buttons: Button5th,
X: 764,
Y: 1023,
Mod: modKeyMeta,
},
},
},
{
"MouseUpEvent",
[]byte{
0x03, // Event type
0b00000001, // Buttons
0x00, 0x00, 0x00, 0xf0, // X
0x00, 0x00, 0x0c, 0x8a, // Y
0b00000100, // Modifier keys
},
MouseUpEvent{
MouseEvent{
Buttons: ButtonPrimary,
X: 240,
Y: 3210,
Mod: modKeyCtrl,
},
},
},
{
"KeyDownEvent",
[]byte{
0x04, // Event type
0b00001010, // Modifier keys
0x00, 0x00, 0x00, 0x09, // len(Key)
0x41, 0x72, 0x72, 0x6f, 0x77, 0x4c, 0x65, 0x66, 0x74, // Key
},
KeyDownEvent{
KeyboardEvent{
Key: "ArrowLeft",
Mod: modKeyShift | modKeyMeta,
},
},
},
{
"KeyUpEvent",
[]byte{
0x05, // Event type
0b00000011, // Modifier keys
0x00, 0x00, 0x00, 0x0a, // len(Key)
0x41, 0x72, 0x72, 0x6f, 0x77, 0x52, 0x69, 0x67, 0x68, 0x74, // Key
},
KeyUpEvent{
KeyboardEvent{
Key: "ArrowRight",
Mod: modKeyAlt | modKeyShift,
},
},
},
{
"ClickEvent",
[]byte{
0x06, // Event type
0b00000010, // Buttons
0x00, 0x00, 0x07, 0x81, // X
0x00, 0x00, 0x02, 0x02, // Y
0b00000010, // Modifier keys
},
ClickEvent{
MouseEvent{
Buttons: ButtonSecondary,
X: 1921,
Y: 514,
Mod: modKeyShift,
},
},
},
{
"DblClickEvent",
[]byte{
0x07, // Event type
0b00000001, // Buttons
0x00, 0x00, 0x0f, 0xc0, // X
0x00, 0x00, 0x14, 0xdf, // Y
0b00000011, // Modifier keys
},
DblClickEvent{
MouseEvent{
Buttons: ButtonPrimary,
X: 4032,
Y: 5343,
Mod: modKeyAlt | modKeyShift,
},
},
},
{
"AuxClickEvent",
[]byte{
0x08, // Event type
0b00000001, // Buttons
0x00, 0x00, 0x01, 0x41, // X
0x00, 0x00, 0x02, 0x1f, // Y
0b00001100, // Modifier keys
},
AuxClickEvent{
MouseEvent{
Buttons: ButtonPrimary,
X: 321,
Y: 543,
Mod: modKeyCtrl | modKeyMeta,
},
},
},
{
"WheelEvent",
[]byte{
0x09, // Event type
0b00001100, // Buttons
0x00, 0x00, 0x00, 0x82, // X
0x00, 0x00, 0x01, 0x9A, // Y
0b00000010, // Modifier keys
0x40, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // DeltaX
0x40, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // DeltaY
0x40, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // DeltaZ
0x01, // Delta mode
},
WheelEvent{
MouseEvent: MouseEvent{
Buttons: ButtonAuxiliary | Button4th,
X: 130,
Y: 410,
Mod: modKeyShift,
},
DeltaX: 10,
DeltaY: 24,
DeltaZ: 4,
DeltaMode: DeltaLine,
},
},
{
"TouchStartEvent",
[]byte{
0x0a, // Event type
0x01, // len(Touches)
0x00, 0x00, 0x00, 0x00, // Touches[0].Identifier
0x00, 0x00, 0x01, 0x54, // Touches[0].X
0x00, 0x00, 0x00, 0xd2, // Touches[0].Y
0x00, // len(ChangedTouches)
0x00, // len(TargetTouches)
0b00001000, // Modifier keys
},
TouchStartEvent{
TouchEvent{
Touches: TouchList{
{Identifier: 0, X: 340, Y: 210},
},
ChangedTouches: TouchList{},
TargetTouches: TouchList{},
Mod: modKeyMeta,
},
},
},
{
"TouchMoveEvent",
[]byte{
0x0b, // Event type
0x02, // len(Touches)
0x00, 0x00, 0x00, 0x00, // Touches[0].Identifier
0x00, 0x00, 0x0f, 0x00, // Touches[0].X
0x00, 0x00, 0x00, 0xa5, // Touches[0].Y
0x00, 0x00, 0x00, 0x01, // Touches[1].Identifier
0x00, 0x00, 0x03, 0x10, // Touches[1].X
0x00, 0x00, 0x02, 0x05, // Touches[1].Y
0x01, // len(ChangedTouches)
0x00, 0x00, 0x00, 0x01, // ChangedTouches[0].Identifier
0x00, 0x00, 0x00, 0xf0, // ChangedTouches[0].X
0x00, 0x00, 0x00, 0xa2, // ChangedTouches[0].Y
0x01, // len(TargetTouches)
0x00, 0x00, 0x00, 0x02, // TargetTouches[0].Identifier
0x00, 0x00, 0x01, 0x00, // TargetTouches[0].X
0x00, 0x00, 0x02, 0x00, // TargetTouches[0].Y
0b00000101, // Modifier keys
},
TouchMoveEvent{
TouchEvent{
Touches: TouchList{
{Identifier: 0, X: 3840, Y: 165},
{Identifier: 1, X: 784, Y: 517},
},
ChangedTouches: TouchList{{Identifier: 1, X: 240, Y: 162}},
TargetTouches: TouchList{{Identifier: 2, X: 256, Y: 512}},
Mod: modKeyAlt | modKeyCtrl,
},
},
},
{
"TouchEndEvent",
[]byte{
0x0c, // Event type
0x00, // len(Touches)
0x01, // len(ChangedTouches)
0x00, 0x00, 0x00, 0x00, // Touches[0].Identifier
0x00, 0x00, 0x01, 0x54, // Touches[0].X
0x00, 0x00, 0x00, 0xd2, // Touches[0].Y
0x00, // len(TargetTouches)
0b00000001, // Modifier keys
},
TouchEndEvent{
TouchEvent{
Touches: TouchList{},
ChangedTouches: TouchList{
{Identifier: 0, X: 340, Y: 210},
},
TargetTouches: TouchList{},
Mod: modKeyAlt,
},
},
},
{
"TouchCancelEvent",
[]byte{
0x0d, // Event type
0x00, // len(Touches)
0x00, // len(ChangedTouches)
0x01, // len(TargetTouches)
0x00, 0x00, 0x00, 0x00, // Touches[0].Identifier
0x00, 0x00, 0x01, 0x54, // Touches[0].X
0x00, 0x00, 0x00, 0xd2, // Touches[0].Y
0b00000011, // Modifier keys
},
TouchCancelEvent{
TouchEvent{
Touches: TouchList{},
ChangedTouches: TouchList{},
TargetTouches: TouchList{
{Identifier: 0, X: 340, Y: 210},
},
Mod: modKeyAlt | modKeyShift,
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := decodeEvent(tt.p)
if err != nil {
t.Errorf("did not expect error, but got error: %s", err)
return
}
if diff := cmp.Diff(tt.want, got); diff != "" {
t.Errorf("mismatch (-want, +got)\n%s", diff)
}
})
}
}
func TestUnsupportedEventType(t *testing.T) {
tests := []byte{
0x00,
0xfa,
0xfb,
0xfc,
}
wantErrorMessage := "unknown event type: "
for _, tt := range tests {
got, err := decodeEvent([]byte{tt})
if err == nil {
t.Errorf("expected error, but got none")
return
}
if wantType, ok := err.(errUnknownEventType); !ok {
t.Errorf("expected %T error, but got: %#v", wantType, err)
}
if !strings.HasPrefix(err.Error(), wantErrorMessage) {
t.Errorf("expected %q error message, but got: %q", wantErrorMessage, err)
}
if got != nil {
t.Errorf("expected nil event, but got: %#v", got)
}
}
}
func TestEventDataTooShort(t *testing.T) {
tests := []struct {
p []byte
}{
{[]byte{0x01}},
{[]byte{0x02, 0x00, 0x00, 0x00}},
{[]byte{0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}},
}
for _, tt := range tests {
got, err := decodeEvent(tt.p)
if err == nil {
t.Errorf("expected error, but got none")
return
}
if wantType, ok := err.(errDataTooShort); !ok {
t.Errorf("expected %T error, but got: %#v", wantType, err)
}
if got != nil {
t.Errorf("expected nil event, but got: %#v", got)
}
}
}
func TestEventMask(t *testing.T) {
tests := []struct {
event Event
want eventMask
}{
{CloseEvent{}, 0},
{MouseEvent{}, 0b11100111},
{MouseMoveEvent{}, 0b00000001},
{MouseDownEvent{}, 0b00000010},
{MouseUpEvent{}, 0b00000100},
{ClickEvent{}, 0b00100000},
{DblClickEvent{}, 0b01000000},
{AuxClickEvent{}, 0b10000000},
{WheelEvent{}, 0b100000000},
{KeyboardEvent{}, 0b00011000},
{KeyDownEvent{}, 0b00001000},
{KeyUpEvent{}, 0b00010000},
{TouchEvent{}, 0b1111000000000},
{TouchStartEvent{}, 0b0001000000000},
{TouchMoveEvent{}, 0b0010000000000},
{TouchEndEvent{}, 0b0100000000000},
{TouchCancelEvent{}, 0b1000000000000},
}
for _, tt := range tests {
got := tt.event.mask()
if got != tt.want {
t.Errorf("Event mask for %T; got: %#b, want: %#b", tt.event, got, tt.want)
}
}
}