init layout, notifications, tabs & more

Signed-off-by: Hadi <112569860+anotherhadi@users.noreply.github.com>

layout/geometry_test.go

@@ -0,0 +1,89 @@
+package layout
+
+import "testing"
+
+func TestComputeLayoutEvenSplit(t *testing.T) {
+	root := HSplit(0.5, Leaf("a", newStub()), Leaf("b", newStub()))
+	leaves := computeLayout(root, Rect{W: 100, H: 40})
+
+	want := map[string]Rect{
+		"a": {X: 0, Y: 0, W: 50, H: 40},
+		"b": {X: 50, Y: 0, W: 50, H: 40},
+	}
+	assertLeafRects(t, leaves, want)
+}
+
+func TestComputeLayoutVerticalRatio(t *testing.T) {
+	root := VSplit(0.25, Leaf("top", newStub()), Leaf("bottom", newStub()))
+	leaves := computeLayout(root, Rect{W: 80, H: 40})
+
+	want := map[string]Rect{
+		"top":    {X: 0, Y: 0, W: 80, H: 10},
+		"bottom": {X: 0, Y: 10, W: 80, H: 30},
+	}
+	assertLeafRects(t, leaves, want)
+}
+
+func TestComputeLayoutMinimum(t *testing.T) {
+	root := HSplit(0.1, Leaf("a", newStub()), Leaf("b", newStub())).WithMinimum(20)
+	leaves := computeLayout(root, Rect{W: 100, H: 10})
+
+	want := map[string]Rect{
+		"a": {X: 0, Y: 0, W: 20, H: 10},
+		"b": {X: 20, Y: 0, W: 80, H: 10},
+	}
+	assertLeafRects(t, leaves, want)
+}
+
+func TestComputeLayoutMaximum(t *testing.T) {
+	root := HSplit(0.9, Leaf("a", newStub()), Leaf("b", newStub())).WithMaximum(20)
+	leaves := computeLayout(root, Rect{W: 100, H: 10})
+
+	want := map[string]Rect{
+		"a": {X: 0, Y: 0, W: 20, H: 10},
+		"b": {X: 20, Y: 0, W: 80, H: 10},
+	}
+	assertLeafRects(t, leaves, want)
+}
+
+func TestComputeLayoutFixedWhenMinEqualsMax(t *testing.T) {
+	root := HSplit(0.9, Leaf("a", newStub()), Leaf("b", newStub())).WithMinimum(20).WithMaximum(20)
+	leaves := computeLayout(root, Rect{W: 100, H: 10})
+
+	want := map[string]Rect{
+		"a": {X: 0, Y: 0, W: 20, H: 10},
+		"b": {X: 20, Y: 0, W: 80, H: 10},
+	}
+	assertLeafRects(t, leaves, want)
+}
+
+func TestComputeLayoutNested(t *testing.T) {
+	root := HSplit(0.3,
+		Leaf("sidebar", newStub()),
+		VSplit(0.5, Leaf("top", newStub()), Leaf("bottom", newStub())),
+	)
+	leaves := computeLayout(root, Rect{W: 100, H: 20})
+
+	want := map[string]Rect{
+		"sidebar": {X: 0, Y: 0, W: 30, H: 20},
+		"top":     {X: 30, Y: 0, W: 70, H: 10},
+		"bottom":  {X: 30, Y: 10, W: 70, H: 10},
+	}
+	assertLeafRects(t, leaves, want)
+}
+
+func assertLeafRects(t *testing.T, leaves []LeafRect, want map[string]Rect) {
+	t.Helper()
+	if len(leaves) != len(want) {
+		t.Fatalf("got %d leaves, want %d (%v)", len(leaves), len(want), leaves)
+	}
+	for _, lr := range leaves {
+		wr, ok := want[lr.ID]
+		if !ok {
+			t.Fatalf("unexpected leaf %q", lr.ID)
+		}
+		if lr.Rect != wr {
+			t.Errorf("leaf %q: got %+v, want %+v", lr.ID, lr.Rect, wr)
+		}
+	}
+}