1 files changed, 14 insertions, 0 deletions
diff --git a/mrbgems/mruby-array-ext/test/array.rb b/mrbgems/mruby-array-ext/test/array.rb
index d157a5b4d..1fdfabe49 100644
--- a/mrbgems/mruby-array-ext/test/array.rb
+++ b/mrbgems/mruby-array-ext/test/array.rb
@@ -169,3 +169,17 @@ assert("Array#rotate!") do
   assert_equal ["c", "d", "a", "b"], a.rotate(10)
   assert_equal [], [].rotate!
 end
+
+assert("Array#delete_if") do
+  a = [1, 2, 3, 4, 5]
+  assert_equal [1, 2, 3, 4, 5], a.delete_if { false }
+  assert_equal [1, 2, 3, 4, 5], a
+
+  a = [1, 2, 3, 4, 5]
+  assert_equal [], a.delete_if { true }
+  assert_equal [], a
+
+  a = [1, 2, 3, 4, 5]
+  assert_equal [1, 2, 3], a.delete_if { |i| i > 3 }
+  assert_equal [1, 2, 3], a
+end