Add tests for String Ranges

Range#each depends on String#upto which is implemented in mruby-string-ext
which is why these tests live there.

1 files changed, 12 insertions, 0 deletions

diff --git a/mrbgems/mruby-string-ext/test/range.rb b/mrbgems/mruby-string-ext/test/range.rb
new file mode 100644
index 000000000..4b42cd3a6
--- /dev/null
+++ b/mrbgems/mruby-string-ext/test/range.rb
@@ -0,0 +1,12 @@
+assert('Range#max') do
+  # string Range depends on String#upto
+  assert_equal 'l', ('f'..'l').max
+  assert_equal 'e', ('a'...'f').max
+  assert_equal nil, ('z'..'l').max
+end
+
+assert('Range#min') do
+  # string Range depends on String#upto
+  assert_equal 'f', ('f'..'l').min
+  assert_equal nil, ('z'..'l').min
+end