4 files changed, 16 insertions, 14 deletions
diff --git a/spec/ruby/library/yaml/parse_file_spec.rb b/spec/ruby/library/yaml/parse_file_spec.rb
index 7bffcdc62f..a29377f163 100644
--- a/spec/ruby/library/yaml/parse_file_spec.rb
+++ b/spec/ruby/library/yaml/parse_file_spec.rb
@@ -5,6 +5,6 @@ require 'yaml'
 describe "YAML.parse_file" do
   it "returns a YAML::Syck::Map object after parsing a YAML file" do
     test_parse_file = fixture __FILE__, "test_yaml.yml"
-    YAML.parse_file(test_parse_file).should be_kind_of(Psych::Nodes::Document)
+    YAML.parse_file(test_parse_file).should.is_a?(Psych::Nodes::Document)
   end
 end
diff --git a/spec/ruby/library/yaml/parse_spec.rb b/spec/ruby/library/yaml/parse_spec.rb
index 37e2b7fa0a..832cd99d03 100644
--- a/spec/ruby/library/yaml/parse_spec.rb
+++ b/spec/ruby/library/yaml/parse_spec.rb
@@ -4,7 +4,7 @@ require 'yaml'
 
 describe "YAML.parse with an empty string" do
   it "returns false" do
-    YAML.parse('').should be_false
+    YAML.parse('').should == false
   end
 end
 
diff --git a/spec/ruby/library/yaml/shared/load.rb b/spec/ruby/library/yaml/shared/load.rb
index b8bb605b0a..7e5669f2d0 100644
--- a/spec/ruby/library/yaml/shared/load.rb
+++ b/spec/ruby/library/yaml/shared/load.rb
@@ -60,7 +60,7 @@ describe :yaml_load_safe, shared: true do
     else
       error = ArgumentError
     end
-    -> { YAML.send(@method, "key1: value\ninvalid_key") }.should raise_error(error)
+    -> { YAML.send(@method, "key1: value\ninvalid_key") }.should.raise(error)
   end
 
   it "accepts symbols" do
@@ -117,7 +117,7 @@ describe :yaml_load_unsafe, shared: true do
       ].should be_computed_by(:usec)
     end
 
-    it "rounds values smaller than 1 usec to 0 " do
+    it "rounds values smaller than 1 usec to 0" do
       YAML.send(@method, "2011-03-22t23:32:11.000000342222+01:00").usec.should == 0
     end
   end
@@ -137,6 +137,6 @@ describe :yaml_load_unsafe, shared: true do
     loaded = YAML.send(@method, "--- !ruby/object:File {}\n")
     -> {
       loaded.read(1)
-    }.should raise_error(IOError)
+    }.should.raise(IOError)
   end
 end
diff --git a/spec/ruby/library/yaml/to_yaml_spec.rb b/spec/ruby/library/yaml/to_yaml_spec.rb
index 547009c942..328ab25552 100644
--- a/spec/ruby/library/yaml/to_yaml_spec.rb
+++ b/spec/ruby/library/yaml/to_yaml_spec.rb
@@ -32,25 +32,25 @@ describe "Object#to_yaml" do
 
   it "returns the YAML representation of a FalseClass" do
     false_klass = false
-    false_klass.should be_kind_of(FalseClass)
+    false_klass.should.is_a?(FalseClass)
     false_klass.to_yaml.should match_yaml("--- false\n")
   end
 
   it "returns the YAML representation of a Float object" do
     float = 1.2
-    float.should be_kind_of(Float)
+    float.should.is_a?(Float)
     float.to_yaml.should match_yaml("--- 1.2\n")
   end
 
   it "returns the YAML representation of an Integer object" do
     int = 20
-    int.should be_kind_of(Integer)
+    int.should.is_a?(Integer)
     int.to_yaml.should match_yaml("--- 20\n")
   end
 
   it "returns the YAML representation of a NilClass object" do
     nil_klass = nil
-    nil_klass.should be_kind_of(NilClass)
+    nil_klass.should.is_a?(NilClass)
     nil_klass.to_yaml.should match_yaml("--- \n")
   end
 
@@ -65,6 +65,8 @@ describe "Object#to_yaml" do
   it "returns the YAML representation of a Struct object" do
     Person = Struct.new(:name, :gender)
     Person.new("Jane", "female").to_yaml.should match_yaml("--- !ruby/struct:Person\nname: Jane\ngender: female\n")
+  ensure
+    Object.send(:remove_const, :Person)
   end
 
   it "returns the YAML representation of an unnamed Struct object" do
@@ -82,7 +84,7 @@ describe "Object#to_yaml" do
 
   it "returns the YAML representation of a TrueClass" do
     true_klass = true
-    true_klass.should be_kind_of(TrueClass)
+    true_klass.should.is_a?(TrueClass)
     true_klass.to_yaml.should match_yaml("--- true\n")
   end
 
@@ -92,10 +94,10 @@ describe "Object#to_yaml" do
 
   it "returns the YAML representation for Range objects" do
     yaml = Range.new(1,3).to_yaml
-    yaml.include?("!ruby/range").should be_true
-    yaml.include?("begin: 1").should be_true
-    yaml.include?("end: 3").should be_true
-    yaml.include?("excl: false").should be_true
+    yaml.include?("!ruby/range").should == true
+    yaml.include?("begin: 1").should == true
+    yaml.include?("end: 3").should == true
+    yaml.include?("excl: false").should == true
   end
 
   it "returns the YAML representation of numeric constants" do