diff --git a/courses/ruby/ex05_string_method_missing/ex05_string_method_missing_test.rb b/courses/ruby/ex05_string_method_missing/ex05_string_method_missing_test.rb
new file mode 100644
index 00000000..22dadb7c
--- /dev/null
+++ b/courses/ruby/ex05_string_method_missing/ex05_string_method_missing_test.rb
@@ -0,0 +1,60 @@
+require "minitest/autorun"
+require "minitest/pride"
+
+require_relative "ex05"
+
+class Ex05Test < Minitest::Test
+  
+  def test_initialize
+    skip 
+    line = "hello world!"
+
+    string = line.ask
+
+    assert_equal line, string
+  end
+
+  def test_check_method_name
+    skip
+    line = "check"
+    string = line.ask
+    res = string.check?
+
+    assert_equal true, res
+  end
+  
+  def test_check_other_method_name
+    skip
+    line = "other_check"
+    string = line.ask
+    res = string.check?
+
+    assert_equal false, res
+  end
+
+  def test_check_class
+    skip
+    line = "hello world"
+    string = line.ask
+    cls = string.class
+
+    assert_equal StringAsk, cls
+  end
+
+  def test_check_parent_class
+    skip
+    line = "hello world"
+    string = line.ask
+    cls = string.parent
+
+    assert_equal String, cls
+  end
+
+  def test_length
+    skip
+    line = "hello world"
+    string = line.ask
+    
+    assert_equal line.length, string.length
+  end
+end