diff options
Diffstat (limited to 'spec/ruby/core/string/unpack_spec.rb')
-rw-r--r-- | spec/ruby/core/string/unpack_spec.rb | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/spec/ruby/core/string/unpack_spec.rb b/spec/ruby/core/string/unpack_spec.rb new file mode 100644 index 0000000000..52b4af3a95 --- /dev/null +++ b/spec/ruby/core/string/unpack_spec.rb @@ -0,0 +1,34 @@ +require_relative '../../spec_helper' + +describe "String#unpack" do + it "raises a TypeError when passed nil" do + -> { "abc".unpack(nil) }.should raise_error(TypeError) + end + + it "raises a TypeError when passed an Integer" do + -> { "abc".unpack(1) }.should raise_error(TypeError) + end + + ruby_version_is "3.1" do + it "starts unpacking from the given offset" do + "abc".unpack("CC", offset: 1).should == [98, 99] + end + + it "traits offset as a bytes offset" do + "؈".unpack("CC").should == [216, 136] + "؈".unpack("CC", offset: 1).should == [136, nil] + end + + it "raises an ArgumentError when the offset is negative" do + -> { "a".unpack("C", offset: -1) }.should raise_error(ArgumentError, "offset can't be negative") + end + + it "returns nil if the offset is at the end of the string" do + "a".unpack("C", offset: 1).should == [nil] + end + + it "raises an ArgumentError when the offset is larget than the string" do + -> { "a".unpack("C", offset: 2) }.should raise_error(ArgumentError, "offset outside of string") + end + end +end |