add dagre_spacing_right test

e2etests/stable_test.go

@@ -2785,6 +2785,7 @@ scenarios: {
 		loadFromFile(t, "all_shapes_link"),
 		loadFromFile(t, "nested_shape_labels"),
 		loadFromFile(t, "dagre_spacing"),
+		loadFromFile(t, "dagre_spacing_right"),
 	}
 
 	runa(t, tcs)

e2etests/testdata/files/dagre_spacing_right.d2

@@ -0,0 +1,103 @@
+direction: right
+
+a: {
+  k.t -> f.i
+  f.g -> _.s.n
+}
+k
+k.s <-> u.o
+h.m.s -> a.f.g
+
+a.f.j -> u.s.j
+u: {
+  c -> _.s.z.c
+}
+
+s: {
+  n: {
+    style.stroke: red
+    f
+  }
+}
+
+s.n -> y.r: {style.stroke-width: 8; style.stroke: red}
+y.r -> a.g.i: 1\n2\n3\n4
+
+s.n.class: icon
+a.f.i: {
+  label: i\nii
+  class: OutsideTopCenter
+}
+u.s.j.class: OutsideBottomCenter
+u.s: {
+  label: s\ns\ns\ns
+  class: OutsideBottomCenter
+}
+a.f.j.class: [icon; IconOutsideLeftTop]
+u.c: {
+  label: cccccccccccccccccccc
+  class: OutsideRightMiddle
+}
+
+classes: {
+  icon: {
+    icon: https://icons.terrastruct.com/essentials/time.svg
+  }
+
+  OutsideTopLeft.label.near: outside-top-left
+  OutsideTopCenter.label.near: outside-top-center
+  OutsideTopRight.label.near: outside-top-right
+
+  OutsideLeftTop.label.near: outside-left-top
+  OutsideLeftMiddle.label.near: outside-left-center
+  OutsideLeftBottom.label.near: outside-left-bottom
+
+  OutsideRightTop.label.near: outside-right-top
+  OutsideRightMiddle.label.near: outside-right-center
+  OutsideRightBottom.label.near: outside-right-bottom
+
+  OutsideBottomLeft.label.near: outside-bottom-left
+  OutsideBottomCenter.label.near: outside-bottom-center
+  OutsideBottomRight.label.near: outside-bottom-right
+
+  InsideTopLeft.label.near: top-left
+  InsideTopCenter.label.near: top-center
+  InsideTopRight.label.near: top-right
+
+  InsideMiddleLeft.label.near: center-left
+  InsideMiddleCenter.label.near: center-center
+  InsideMiddleRight.label.near: center-right
+
+  InsideBottomLeft.label.near: bottom-left
+  InsideBottomCenter.label.near: bottom-center
+  InsideBottomRight.label.near: bottom-right
+
+  # Icon positions
+  IconOutsideTopLeft.icon.near: outside-top-left
+  IconOutsideTopCenter.icon.near: outside-top-center
+  IconOutsideTopRight.icon.near: outside-top-right
+
+  IconOutsideLeftTop.icon.near: outside-left-top
+  IconOutsideLeftMiddle.icon.near: outside-left-center
+  IconOutsideLeftBottom.icon.near: outside-left-bottom
+
+  IconOutsideRightTop.icon.near: outside-right-top
+  IconOutsideRightMiddle.icon.near: outside-right-center
+  IconOutsideRightBottom.icon.near: outside-right-bottom
+
+  IconOutsideBottomLeft.icon.near: outside-bottom-left
+  IconOutsideBottomCenter.icon.near: outside-bottom-center
+  IconOutsideBottomRight.icon.near: outside-bottom-right
+
+  IconInsideTopLeft.icon.near: top-left
+  IconInsideTopCenter.icon.near: top-center
+  IconInsideTopRight.icon.near: top-right
+
+  IconInsideMiddleLeft.icon.near: center-left
+  IconInsideMiddleCenter.icon.near: center-center
+  IconInsideMiddleRight.icon.near: center-right
+
+  IconInsideBottomLeft.icon.near: bottom-left
+  IconInsideBottomCenter.icon.near: bottom-center
+  IconInsideBottomRight.icon.near: bottom-right
+}