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author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
commit | a3736e97a6ca517c2cd7d3d93a8f2ef86e39e5b5 (patch) | |
tree | 9eef7f720314ebaff56845a74e203770e62284e4 /spec/rubyspec/core/kernel/String_spec.rb | |
parent | 52df1d0d3370919711c0577aaa42d1a864709885 (diff) | |
download | ruby-a3736e97a6ca517c2cd7d3d93a8f2ef86e39e5b5.tar.gz |
Add in-tree mspec and ruby/spec
* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
These files can therefore be updated like any other file in MRI.
Instructions are provided in spec/README.
[Feature #13156] [ruby-core:79246]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/rubyspec/core/kernel/String_spec.rb')
-rw-r--r-- | spec/rubyspec/core/kernel/String_spec.rb | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/spec/rubyspec/core/kernel/String_spec.rb b/spec/rubyspec/core/kernel/String_spec.rb new file mode 100644 index 0000000000..b24bc798e5 --- /dev/null +++ b/spec/rubyspec/core/kernel/String_spec.rb @@ -0,0 +1,106 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe :kernel_String, shared: true do + it "converts nil to a String" do + @object.send(@method, nil).should == "" + end + + it "converts a Float to a String" do + @object.send(@method, 1.12).should == "1.12" + end + + it "converts a boolean to a String" do + @object.send(@method, false).should == "false" + @object.send(@method, true).should == "true" + end + + it "converts a constant to a String" do + @object.send(@method, Object).should == "Object" + end + + it "calls #to_s to convert an arbitrary object to a String" do + obj = mock('test') + obj.should_receive(:to_s).and_return("test") + + @object.send(@method, obj).should == "test" + end + + it "raises a TypeError if #to_s does not exist" do + obj = mock('to_s') + class << obj + undef_method :to_s + end + + lambda { @object.send(@method, obj) }.should raise_error(TypeError) + end + + # #5158 + it "raises a TypeError if respond_to? returns false for #to_s" do + obj = mock("to_s") + class << obj + def respond_to?(meth, include_private=false) + meth == :to_s ? false : super + end + end + + lambda { @object.send(@method, obj) }.should raise_error(TypeError) + end + + it "raises a TypeError if #to_s is not defined, even though #respond_to?(:to_s) returns true" do + # cannot use a mock because of how RSpec affects #method_missing + obj = Object.new + class << obj + undef_method :to_s + def respond_to?(meth, include_private=false) + meth == :to_s ? true : super + end + end + + lambda { @object.send(@method, obj) }.should raise_error(TypeError) + end + + it "calls #to_s if #respond_to?(:to_s) returns true" do + obj = mock('to_s') + class << obj + undef_method :to_s + def method_missing(meth, *args) + meth == :to_s ? "test" : super + end + end + + @object.send(@method, obj).should == "test" + end + + it "raises a TypeError if #to_s does not return a String" do + (obj = mock('123')).should_receive(:to_s).and_return(123) + lambda { @object.send(@method, obj) }.should raise_error(TypeError) + end + + it "returns the same object if it is already a String" do + string = "Hello" + string.should_not_receive(:to_s) + string2 = @object.send(@method, string) + string.should equal(string2) + end + + it "returns the same object if it is an instance of a String subclass" do + subklass = Class.new(String) + string = subklass.new("Hello") + string.should_not_receive(:to_s) + string2 = @object.send(@method, string) + string.should equal(string2) + end +end + +describe "Kernel.String" do + it_behaves_like :kernel_String, :String, Kernel +end + +describe "Kernel#String" do + it_behaves_like :kernel_String, :String, Object.new + + it "is a private method" do + Kernel.should have_private_instance_method(:String) + end +end |