use assert_nil when nil assertion

2 files changed, 7 insertions, 7 deletions

diff --git a/test/psych/test_scalar_scanner.rb b/test/psych/test_scalar_scanner.rb
index 2599989..9b6d8c1 100644
--- a/test/psych/test_scalar_scanner.rb
+++ b/test/psych/test_scalar_scanner.rb
@@ -79,9 +79,9 @@ module Psych
     end
 
     def test_scan_null
-      assert_equal nil, ss.tokenize('null')
-      assert_equal nil, ss.tokenize('~')
-      assert_equal nil, ss.tokenize('')
+      assert_nil ss.tokenize('null')
+      assert_nil ss.tokenize('~')
+      assert_nil ss.tokenize('')
     end
 
     def test_scan_symbol
diff --git a/test/psych/visitors/test_yaml_tree.rb b/test/psych/visitors/test_yaml_tree.rb
index 5755f58..ea38f6d 100644
--- a/test/psych/visitors/test_yaml_tree.rb
+++ b/test/psych/visitors/test_yaml_tree.rb
@@ -165,10 +165,10 @@ module Psych
       # http://yaml.org/type/null.html
       def test_nil
         assert_cycle nil
-        assert_equal nil, Psych.load('null')
-        assert_equal nil, Psych.load('Null')
-        assert_equal nil, Psych.load('NULL')
-        assert_equal nil, Psych.load('~')
+        assert_nil Psych.load('null')
+        assert_nil Psych.load('Null')
+        assert_nil Psych.load('NULL')
+        assert_nil Psych.load('~')
         assert_equal({'foo' => nil}, Psych.load('foo: '))
 
         assert_cycle 'null'