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-rw-r--r--spec/rubyspec/core/string/chomp_spec.rb387
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diff --git a/spec/rubyspec/core/string/chomp_spec.rb b/spec/rubyspec/core/string/chomp_spec.rb
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--- a/spec/rubyspec/core/string/chomp_spec.rb
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-# -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes.rb', __FILE__)
-
-describe "String#chomp" do
- describe "when passed no argument" do
- before do
- # Ensure that $/ is set to the default value
- @dollar_slash, $/ = $/, "\n"
- end
-
- after do
- $/ = @dollar_slash
- end
-
- it "does not modify a String with no trailing carriage return or newline" do
- "abc".chomp.should == "abc"
- end
-
- it "returns a copy of the String when it is not modified" do
- str = "abc"
- str.chomp.should_not equal(str)
- end
-
- it "removes one trailing newline" do
- "abc\n\n".chomp.should == "abc\n"
- end
-
- it "removes one trailing carriage return" do
- "abc\r\r".chomp.should == "abc\r"
- end
-
- it "removes one trailing carrige return, newline pair" do
- "abc\r\n\r\n".chomp.should == "abc\r\n"
- end
-
- it "returns an empty String when self is empty" do
- "".chomp.should == ""
- end
-
- it "taints the result if self is tainted" do
- "abc".taint.chomp.tainted?.should be_true
- end
-
- it "returns subclass instances when called on a subclass" do
- str = StringSpecs::MyString.new("hello\n").chomp
- str.should be_an_instance_of(StringSpecs::MyString)
- end
-
- it "removes trailing characters that match $/ when it has been assigned a value" do
- $/ = "cdef"
- "abcdef".chomp.should == "ab"
- end
- end
-
- describe "when passed nil" do
- it "does not modify the String" do
- "abc\r\n".chomp(nil).should == "abc\r\n"
- end
-
- it "returns a copy of the String" do
- str = "abc"
- str.chomp(nil).should_not equal(str)
- end
-
- it "taints the result if self is tainted" do
- "abc".taint.chomp(nil).tainted?.should be_true
- end
-
- it "returns an empty String when self is empty" do
- "".chomp(nil).should == ""
- end
- end
-
- describe "when passed ''" do
- it "removes a final newline" do
- "abc\n".chomp("").should == "abc"
- end
-
- it "removes a final carriage return, newline" do
- "abc\r\n".chomp("").should == "abc"
- end
-
- it "does not remove a final carriage return" do
- "abc\r".chomp("").should == "abc\r"
- end
-
- it "removes more than one trailing newlines" do
- "abc\n\n\n".chomp("").should == "abc"
- end
-
- it "removes more than one trailing carriage return, newline pairs" do
- "abc\r\n\r\n\r\n".chomp("").should == "abc"
- end
-
- it "taints the result if self is tainted" do
- "abc".taint.chomp("").tainted?.should be_true
- end
-
- it "returns an empty String when self is empty" do
- "".chomp("").should == ""
- end
- end
-
- describe "when passed '\\n'" do
- it "removes one trailing newline" do
- "abc\n\n".chomp("\n").should == "abc\n"
- end
-
- it "removes one trailing carriage return" do
- "abc\r\r".chomp("\n").should == "abc\r"
- end
-
- it "removes one trailing carrige return, newline pair" do
- "abc\r\n\r\n".chomp("\n").should == "abc\r\n"
- end
-
- it "taints the result if self is tainted" do
- "abc".taint.chomp("\n").tainted?.should be_true
- end
-
- it "returns an empty String when self is empty" do
- "".chomp("\n").should == ""
- end
- end
-
- describe "when passed an Object" do
- it "calls #to_str to convert to a String" do
- arg = mock("string chomp")
- arg.should_receive(:to_str).and_return("bc")
- "abc".chomp(arg).should == "a"
- end
-
- it "raises a TypeError if #to_str does not return a String" do
- arg = mock("string chomp")
- arg.should_receive(:to_str).and_return(1)
- lambda { "abc".chomp(arg) }.should raise_error(TypeError)
- end
- end
-
- describe "when passed a String" do
- it "removes the trailing characters if they match the argument" do
- "abcabc".chomp("abc").should == "abc"
- end
-
- it "does not modify the String if the argument does not match the trailing characters" do
- "abc".chomp("def").should == "abc"
- end
-
- it "returns an empty String when self is empty" do
- "".chomp("abc").should == ""
- end
-
- it "taints the result if self is tainted" do
- "abc".taint.chomp("abc").tainted?.should be_true
- end
-
- it "does not taint the result when the argument is tainted" do
- "abc".chomp("abc".taint).tainted?.should be_false
- end
- end
-end
-
-describe "String#chomp!" do
- describe "when passed no argument" do
- before do
- # Ensure that $/ is set to the default value
- @dollar_slash, $/ = $/, "\n"
- end
-
- after do
- $/ = @dollar_slash
- end
-
- it "modifies self" do
- str = "abc\n"
- str.chomp!.should equal(str)
- end
-
- it "returns nil if self is not modified" do
- "abc".chomp!.should be_nil
- end
-
- it "removes one trailing newline" do
- "abc\n\n".chomp!.should == "abc\n"
- end
-
- it "removes one trailing carriage return" do
- "abc\r\r".chomp!.should == "abc\r"
- end
-
- it "removes one trailing carrige return, newline pair" do
- "abc\r\n\r\n".chomp!.should == "abc\r\n"
- end
-
- it "returns nil when self is empty" do
- "".chomp!.should be_nil
- end
-
- it "taints the result if self is tainted" do
- "abc\n".taint.chomp!.tainted?.should be_true
- end
-
- it "returns subclass instances when called on a subclass" do
- str = StringSpecs::MyString.new("hello\n").chomp!
- str.should be_an_instance_of(StringSpecs::MyString)
- end
-
- it "removes trailing characters that match $/ when it has been assigned a value" do
- $/ = "cdef"
- "abcdef".chomp!.should == "ab"
- end
- end
-
- describe "when passed nil" do
- it "returns nil" do
- "abc\r\n".chomp!(nil).should be_nil
- end
-
- it "returns nil when self is empty" do
- "".chomp!(nil).should be_nil
- end
- end
-
- describe "when passed ''" do
- it "removes a final newline" do
- "abc\n".chomp!("").should == "abc"
- end
-
- it "removes a final carriage return, newline" do
- "abc\r\n".chomp!("").should == "abc"
- end
-
- it "does not remove a final carriage return" do
- "abc\r".chomp!("").should be_nil
- end
-
- it "removes more than one trailing newlines" do
- "abc\n\n\n".chomp!("").should == "abc"
- end
-
- it "removes more than one trailing carriage return, newline pairs" do
- "abc\r\n\r\n\r\n".chomp!("").should == "abc"
- end
-
- it "taints the result if self is tainted" do
- "abc\n".taint.chomp!("").tainted?.should be_true
- end
-
- it "returns nil when self is empty" do
- "".chomp!("").should be_nil
- end
- end
-
- describe "when passed '\\n'" do
- it "removes one trailing newline" do
- "abc\n\n".chomp!("\n").should == "abc\n"
- end
-
- it "removes one trailing carriage return" do
- "abc\r\r".chomp!("\n").should == "abc\r"
- end
-
- it "removes one trailing carrige return, newline pair" do
- "abc\r\n\r\n".chomp!("\n").should == "abc\r\n"
- end
-
- it "taints the result if self is tainted" do
- "abc\n".taint.chomp!("\n").tainted?.should be_true
- end
-
- it "returns nil when self is empty" do
- "".chomp!("\n").should be_nil
- end
- end
-
- describe "when passed an Object" do
- it "calls #to_str to convert to a String" do
- arg = mock("string chomp")
- arg.should_receive(:to_str).and_return("bc")
- "abc".chomp!(arg).should == "a"
- end
-
- it "raises a TypeError if #to_str does not return a String" do
- arg = mock("string chomp")
- arg.should_receive(:to_str).and_return(1)
- lambda { "abc".chomp!(arg) }.should raise_error(TypeError)
- end
- end
-
- describe "when passed a String" do
- it "removes the trailing characters if they match the argument" do
- "abcabc".chomp!("abc").should == "abc"
- end
-
- it "returns nil if the argument does not match the trailing characters" do
- "abc".chomp!("def").should be_nil
- end
-
- it "returns nil when self is empty" do
- "".chomp!("abc").should be_nil
- end
-
- it "taints the result if self is tainted" do
- "abc".taint.chomp!("abc").tainted?.should be_true
- end
-
- it "does not taint the result when the argument is tainted" do
- "abc".chomp!("abc".taint).tainted?.should be_false
- end
- end
-
- it "raises a RuntimeError on a frozen instance when it is modified" do
- a = "string\n\r"
- a.freeze
-
- lambda { a.chomp! }.should raise_error(RuntimeError)
- end
-
- # see [ruby-core:23666]
- it "raises a RuntimeError on a frozen instance when it would not be modified" do
- a = "string\n\r"
- a.freeze
- lambda { a.chomp!(nil) }.should raise_error(RuntimeError)
- lambda { a.chomp!("x") }.should raise_error(RuntimeError)
- end
-end
-
-with_feature :encoding do
- describe "String#chomp" do
- before :each do
- @before_separator = $/
- end
-
- after :each do
- $/ = @before_separator
- end
-
- it "does not modify a multi-byte character" do
- "あれ".chomp.should == "あれ"
- end
-
- it "removes the final carriage return, newline from a multibyte String" do
- "あれ\r\n".chomp.should == "あれ"
- end
-
- it "removes the final carriage return, newline from a non-ASCII String" do
- str = "abc\r\n".encode "utf-32be"
- str.chomp.should == "abc".encode("utf-32be")
- end
-
- it "removes the final carriage return, newline from a non-ASCII String when the record separator is changed" do
- $/ = "\n".encode("utf-8")
- str = "abc\r\n".encode "utf-32be"
- str.chomp.should == "abc".encode("utf-32be")
- end
- end
-
- describe "String#chomp!" do
- before :each do
- @before_separator = $/
- end
-
- after :each do
- $/ = @before_separator
- end
-
- it "returns nil when the String is not modified" do
- "あれ".chomp!.should be_nil
- end
-
- it "removes the final carriage return, newline from a multibyte String" do
- "あれ\r\n".chomp!.should == "あれ"
- end
-
- it "removes the final carriage return, newline from a non-ASCII String" do
- str = "abc\r\n".encode "utf-32be"
- str.chomp!.should == "abc".encode("utf-32be")
- end
-
- it "removes the final carriage return, newline from a non-ASCII String when the record separator is changed" do
- $/ = "\n".encode("utf-8")
- str = "abc\r\n".encode "utf-32be"
- str.chomp!.should == "abc".encode("utf-32be")
- end
- end
-end