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Diffstat (limited to 'spec/ruby/core/string/delete_spec.rb')
-rw-r--r-- | spec/ruby/core/string/delete_spec.rb | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/spec/ruby/core/string/delete_spec.rb b/spec/ruby/core/string/delete_spec.rb new file mode 100644 index 0000000000..536d4a95af --- /dev/null +++ b/spec/ruby/core/string/delete_spec.rb @@ -0,0 +1,119 @@ +# -*- encoding: utf-8 -*- +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes.rb', __FILE__) + +describe "String#delete" do + it "returns a new string with the chars from the intersection of sets removed" do + s = "hello" + s.delete("lo").should == "he" + s.should == "hello" + + "hello".delete("l", "lo").should == "heo" + + "hell yeah".delete("").should == "hell yeah" + end + + it "raises an ArgumentError when given no arguments" do + lambda { "hell yeah".delete }.should raise_error(ArgumentError) + end + + it "negates sets starting with ^" do + "hello".delete("aeiou", "^e").should == "hell" + "hello".delete("^leh").should == "hell" + "hello".delete("^o").should == "o" + "hello".delete("^").should == "hello" + "^_^".delete("^^").should == "^^" + "oa^_^o".delete("a^").should == "o_o" + end + + it "deletes all chars in a sequence" do + "hello".delete("ej-m").should == "ho" + "hello".delete("e-h").should == "llo" + "hel-lo".delete("e-").should == "hllo" + "hel-lo".delete("-h").should == "ello" + "hel-lo".delete("---").should == "hello" + "hel-012".delete("--2").should == "hel" + "hel-()".delete("(--").should == "hel" + "hello".delete("^e-h").should == "he" + "hello^".delete("^^-^").should == "^" + "hel--lo".delete("^---").should == "--" + + "abcdefgh".delete("a-ce-fh").should == "dg" + "abcdefgh".delete("he-fa-c").should == "dg" + "abcdefgh".delete("e-fha-c").should == "dg" + + "abcde".delete("ac-e").should == "b" + "abcde".delete("^ac-e").should == "acde" + + "ABCabc[]".delete("A-a").should == "bc" + end + + it "deletes multibyte characters" do + "四月".delete("月").should == "四" + '哥哥我倒'.delete('哥').should == "我倒" + end + + it "respects backslash for escaping a -" do + 'Non-Authoritative Information'.delete(' \-\'').should == + 'NonAuthoritativeInformation' + end + + it "raises if the given ranges are invalid" do + not_supported_on :opal do + xFF = [0xFF].pack('C') + range = "\x00 - #{xFF}".force_encoding('utf-8') + lambda { "hello".delete(range).should == "" }.should raise_error(ArgumentError) + end + lambda { "hello".delete("h-e") }.should raise_error(ArgumentError) + lambda { "hello".delete("^h-e") }.should raise_error(ArgumentError) + end + + it "taints result when self is tainted" do + "hello".taint.delete("e").tainted?.should == true + "hello".taint.delete("a-z").tainted?.should == true + + "hello".delete("e".taint).tainted?.should == false + end + + it "tries to convert each set arg to a string using to_str" do + other_string = mock('lo') + other_string.should_receive(:to_str).and_return("lo") + + other_string2 = mock('o') + other_string2.should_receive(:to_str).and_return("o") + + "hello world".delete(other_string, other_string2).should == "hell wrld" + end + + it "raises a TypeError when one set arg can't be converted to a string" do + lambda { "hello world".delete(100) }.should raise_error(TypeError) + lambda { "hello world".delete([]) }.should raise_error(TypeError) + lambda { "hello world".delete(mock('x')) }.should raise_error(TypeError) + end + + it "returns subclass instances when called on a subclass" do + StringSpecs::MyString.new("oh no!!!").delete("!").should be_an_instance_of(StringSpecs::MyString) + end +end + +describe "String#delete!" do + it "modifies self in place and returns self" do + a = "hello" + a.delete!("aeiou", "^e").should equal(a) + a.should == "hell" + end + + it "returns nil if no modifications were made" do + a = "hello" + a.delete!("z").should == nil + a.should == "hello" + end + + it "raises a RuntimeError when self is frozen" do + a = "hello" + a.freeze + + lambda { a.delete!("") }.should raise_error(RuntimeError) + lambda { a.delete!("aeiou", "^e") }.should raise_error(RuntimeError) + end +end |