Remove mutations to semantically equivalent mutation on endless ranges

[Fix #1036]
mbj · Aug 25, 2020 · 2c33899 · 2c33899
1 parent 245a27b
commit 2c33899
Show file tree

Hide file tree

Showing 3 changed files with 9 additions and 4 deletions.
diff --git a/Changelog.md b/Changelog.md
@@ -1,3 +1,7 @@
+# v0.9.11 2020-08-25
+
+* Remove mutation to equivalent semantics on endless ranges [#1036](https://github.com/mbj/mutant/pull/1036).
+
 # v0.9.10 2020-08-25
 
 * Remove bounds to allow `diff-lcs 1.4.x` [#1032](https://github.com/mbj/mutant/pull/1032).

diff --git a/lib/mutant/mutator/node/literal/range.rb b/lib/mutant/mutator/node/literal/range.rb
@@ -21,9 +21,12 @@ class Range < self
 
           def dispatch
             emit_singletons
-            emit_inverse
             emit_lower_bound_mutations
-            emit_upper_bound_mutations if upper_bound
+
+            return unless upper_bound
+
+            emit_inverse
+            emit_upper_bound_mutations
           end
 
           def emit_inverse

diff --git a/meta/range.rb b/meta/range.rb
@@ -45,7 +45,6 @@
     singleton_mutations
     mutation '-1...'
     mutation '0...'
-    mutation '1..'
     mutation '2...'
     mutation 'nil...'
     mutation 'self...'
@@ -57,7 +56,6 @@
     singleton_mutations
     mutation '-1..'
     mutation '0..'
-    mutation '1...'
     mutation '2..'
     mutation 'nil..'
     mutation 'self..'