diff --git a/testdata/drc/drcSimpleTests_20.drc b/testdata/drc/drcSimpleTests_20.drc
index a9622510b..0558a7940 100644
--- a/testdata/drc/drcSimpleTests_20.drc
+++ b/testdata/drc/drcSimpleTests_20.drc
@@ -1,12 +1,7 @@
 
 # Interact with count
 
-has_unbounded_range = false
-begin
-  r = eval("..2")
-  has_unbounded_range = true
-rescue => ex
-end
+has_unbounded_range = ((RUBY_VERSION.split(".").map(&:to_i) <=> [2,7,0]) <= 0)
 
 source($drc_test_source, "TOP")
 target($drc_test_target)
@@ -21,7 +16,7 @@ l1.interacting(l2, 1).output(100, 0)
 l1.interacting(l2, 2).output(101, 0)
 l1.interacting(l2, 1..2).output(102, 0)
 if has_unbounded_range
-  l1.interacting(l2, 2..).output(103, 0)
+  l1.interacting(l2, eval("2..")).output(103, 0)
 else
   l1.interacting(l2, 2..10000).output(103, 0)
 end
@@ -31,7 +26,7 @@ l1.overlapping(l2, 1).output(110, 0)
 l1.overlapping(l2, 2).output(111, 0)
 l1.overlapping(l2, 1..2).output(112, 0)
 if has_unbounded_range
-  l1.overlapping(l2, 2..).output(113, 0)
+  l1.overlapping(l2, eval("2..")).output(113, 0)
 else
   l1.overlapping(l2, 2..10000).output(113, 0)
 end
@@ -48,7 +43,7 @@ l.select_interacting(l2, 1..2)
 l.output(202, 0)
 l = l1.dup
 if has_unbounded_range
-  l.select_interacting(l2, 2..)
+  l.select_interacting(l2, eval("2.."))
 else
   l.select_interacting(l2, 2..10000)
 end
@@ -68,7 +63,7 @@ l.select_overlapping(l2, 1..2)
 l.output(212, 0)
 l = l1.dup
 if has_unbounded_range
-  l.select_overlapping(l2, 2..)
+  l.select_overlapping(l2, eval("2.."))
 else
   l.select_overlapping(l2, 2..10000)
 end
@@ -81,7 +76,7 @@ l1.not_interacting(l2, 1).output(300, 0)
 l1.not_interacting(l2, 2).output(301, 0)
 l1.not_interacting(l2, 1..2).output(302, 0)
 if has_unbounded_range
-  l1.not_interacting(l2, 2..).output(303, 0)
+  l1.not_interacting(l2, eval("2..")).output(303, 0)
 else
   l1.not_interacting(l2, 2..10000).output(303, 0)
 end
@@ -90,7 +85,7 @@ l1.not_interacting(l2, 1, 2).output(304, 0)
 l1.not_overlapping(l2, 1).output(310, 0)
 l1.not_overlapping(l2, 2).output(311, 0)
 l1.not_overlapping(l2, 1..2).output(312, 0)
-l1.not_overlapping(l2, 2..).output(313, 0)
+l1.not_overlapping(l2, eval("2..")).output(313, 0)
 l1.not_overlapping(l2, 1, 2).output(314, 0)
 
 l = l1.dup
@@ -104,7 +99,7 @@ l.select_not_interacting(l2, 1..2)
 l.output(402, 0)
 l = l1.dup
 if has_unbounded_range
-  l.select_not_interacting(l2, 2..)
+  l.select_not_interacting(l2, eval("2.."))
 else
   l.select_not_interacting(l2, 2..10000)
 end
@@ -124,7 +119,7 @@ l.select_not_overlapping(l2, 1..2)
 l.output(412, 0)
 l = l1.dup
 if has_unbounded_range
-  l.select_not_overlapping(l2, 2..)
+  l.select_not_overlapping(l2, eval("2.."))
 else
   l.select_not_overlapping(l2, 2..10000)
 end
diff --git a/testdata/drc/drcSimpleTests_26.drc b/testdata/drc/drcSimpleTests_26.drc
index a21f6ac44..549641cbb 100644
--- a/testdata/drc/drcSimpleTests_26.drc
+++ b/testdata/drc/drcSimpleTests_26.drc
@@ -1,10 +1,5 @@
 
-has_unbounded_range = false
-begin
-  r = eval("..2")
-  has_unbounded_range = true
-rescue => ex
-end
+has_unbounded_range = ((RUBY_VERSION.split(".").map(&:to_i) <=> [2,7,0]) <= 0)
 
 source $drc_test_source
 target $drc_test_target
@@ -37,7 +32,7 @@ l1.non_squares.output(111, 0)
 l2.with_bbox_aspect_ratio(2).output(120, 0)
 l2.with_bbox_aspect_ratio(1).output(121, 0)
 if has_unbounded_range
-  l2.with_bbox_aspect_ratio(..1).output(122, 0)
+  l2.with_bbox_aspect_ratio(eval("..1")).output(122, 0)
 else
   l2.with_bbox_aspect_ratio(0..1).output(122, 0)
 end
@@ -46,7 +41,7 @@ l2.without_bbox_aspect_ratio(0..2).output(123, 0)
 l2.with_relative_height(2).output(130, 0)
 l2.with_relative_height(1).output(131, 0)
 if has_unbounded_range
-  l2.with_relative_height(..1).output(132, 0)
+  l2.with_relative_height(eval("..1")).output(132, 0)
 else
   l2.with_relative_height(0..1).output(132, 0)
 end