initial commit

testutil_test.go

@@ -0,0 +1,80 @@
+package gel
+
+import (
+	"image"
+	"image/color"
+	"testing"
+
+	"github.com/p9c/p9/pkg/gel/fonts/p9fonts"
+	"github.com/p9c/p9/pkg/opts/binary"
+	"github.com/p9c/p9/pkg/opts/meta"
+	"github.com/p9c/p9/pkg/qu"
+
+	l "github.com/p9c/p9/pkg/gel/gio/layout"
+	"github.com/p9c/p9/pkg/gel/gio/op"
+)
+
+// testWindow creates a Window suitable for testing without actual GUI.
+func testWindow(t *testing.T) *Window {
+	t.Helper()
+	quit := qu.T()
+	th := NewTheme(
+		binary.New(meta.Data{}, false, nil),
+		p9fonts.Collection(),
+		quit,
+	)
+	w := &Window{
+		Theme: th,
+		scale: &scaledConfig{1},
+	}
+	th.WidgetPool = w.NewPool()
+	return w
+}
+
+// testContext creates a layout.Context for testing with the given size.
+func testContext(t *testing.T, size image.Point) l.Context {
+	t.Helper()
+	ops := new(op.Ops)
+	return l.Context{
+		Ops: ops,
+		Constraints: l.Constraints{
+			Min: image.Point{},
+			Max: size,
+		},
+	}
+}
+
+// assertDimensionsNonZero checks that dimensions have non-zero width and height.
+func assertDimensionsNonZero(t *testing.T, dims l.Dimensions, msg string) {
+	t.Helper()
+	if dims.Size.X == 0 && dims.Size.Y == 0 {
+		t.Errorf("%s: got zero dimensions", msg)
+	}
+}
+
+// assertDimensionsWithin checks dimensions are within expected bounds.
+func assertDimensionsWithin(t *testing.T, dims l.Dimensions, maxX, maxY int, msg string) {
+	t.Helper()
+	if dims.Size.X > maxX {
+		t.Errorf("%s: width %d exceeds max %d", msg, dims.Size.X, maxX)
+	}
+	if dims.Size.Y > maxY {
+		t.Errorf("%s: height %d exceeds max %d", msg, dims.Size.Y, maxY)
+	}
+}
+
+// assertColorEqual checks two colors are equal.
+func assertColorEqual(t *testing.T, got, want color.NRGBA, msg string) {
+	t.Helper()
+	if got != want {
+		t.Errorf("%s: got color %v, want %v", msg, got, want)
+	}
+}
+
+// assertNoError fails the test if err is not nil.
+func assertNoError(t *testing.T, err error, msg string) {
+	t.Helper()
+	if err != nil {
+		t.Errorf("%s: unexpected error: %v", msg, err)
+	}
+}