diff options
author | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2018-10-07 13:02:46 +0900 |
---|---|---|
committer | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2021-07-16 17:49:53 +0900 |
commit | 301d194ee3b49e6b078eccb999dd538e9bfa8c7c (patch) | |
tree | 8488af78fa5c0f0dab79905a577e365acef7ca01 /spec/ruby/core/integer/try_convert_spec.rb | |
parent | eee709595cecdbc35d7bca9e779c36523c4659c5 (diff) | |
download | ruby-301d194ee3b49e6b078eccb999dd538e9bfa8c7c.tar.gz |
Add Integer.try_convert [Feature #15211]
Diffstat (limited to 'spec/ruby/core/integer/try_convert_spec.rb')
-rw-r--r-- | spec/ruby/core/integer/try_convert_spec.rb | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/spec/ruby/core/integer/try_convert_spec.rb b/spec/ruby/core/integer/try_convert_spec.rb new file mode 100644 index 0000000000..45c66eec79 --- /dev/null +++ b/spec/ruby/core/integer/try_convert_spec.rb @@ -0,0 +1,40 @@ +require_relative '../../spec_helper' +require_relative 'fixtures/classes' + +ruby_version_is "3.1" do + describe "Integer.try_convert" do + it "returns the argument if it's an Integer" do + x = 42 + Integer.try_convert(x).should equal(x) + end + + it "returns nil when the argument does not respond to #to_int" do + Integer.try_convert(Object.new).should be_nil + end + + it "sends #to_int to the argument and returns the result if it's nil" do + obj = mock("to_int") + obj.should_receive(:to_int).and_return(nil) + Integer.try_convert(obj).should be_nil + end + + it "sends #to_int to the argument and returns the result if it's an Integer" do + x = 234 + obj = mock("to_int") + obj.should_receive(:to_int).and_return(x) + Integer.try_convert(obj).should equal(x) + end + + it "sends #to_int to the argument and raises TypeError if it's not a kind of Integer" do + obj = mock("to_int") + obj.should_receive(:to_int).and_return(Object.new) + -> { Integer.try_convert obj }.should raise_error(TypeError) + end + + it "does not rescue exceptions raised by #to_int" do + obj = mock("to_int") + obj.should_receive(:to_int).and_raise(RuntimeError) + -> { Integer.try_convert obj }.should raise_error(RuntimeError) + end + end +end |