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a34db218ad
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61504 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
387 lines
10 KiB
Ruby
387 lines
10 KiB
Ruby
# -*- encoding: utf-8 -*-
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require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../fixtures/classes.rb', __FILE__)
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describe "String#chomp" do
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describe "when passed no argument" do
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before do
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# Ensure that $/ is set to the default value
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@dollar_slash, $/ = $/, "\n"
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end
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after do
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$/ = @dollar_slash
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end
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it "does not modify a String with no trailing carriage return or newline" do
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"abc".chomp.should == "abc"
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end
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it "returns a copy of the String when it is not modified" do
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str = "abc"
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str.chomp.should_not equal(str)
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end
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it "removes one trailing newline" do
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"abc\n\n".chomp.should == "abc\n"
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end
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it "removes one trailing carriage return" do
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"abc\r\r".chomp.should == "abc\r"
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end
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it "removes one trailing carrige return, newline pair" do
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"abc\r\n\r\n".chomp.should == "abc\r\n"
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end
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it "returns an empty String when self is empty" do
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"".chomp.should == ""
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end
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it "taints the result if self is tainted" do
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"abc".taint.chomp.tainted?.should be_true
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end
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it "returns subclass instances when called on a subclass" do
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str = StringSpecs::MyString.new("hello\n").chomp
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str.should be_an_instance_of(StringSpecs::MyString)
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end
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it "removes trailing characters that match $/ when it has been assigned a value" do
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$/ = "cdef"
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"abcdef".chomp.should == "ab"
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end
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end
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describe "when passed nil" do
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it "does not modify the String" do
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"abc\r\n".chomp(nil).should == "abc\r\n"
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end
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it "returns a copy of the String" do
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str = "abc"
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str.chomp(nil).should_not equal(str)
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end
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it "taints the result if self is tainted" do
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"abc".taint.chomp(nil).tainted?.should be_true
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end
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it "returns an empty String when self is empty" do
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"".chomp(nil).should == ""
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end
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end
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describe "when passed ''" do
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it "removes a final newline" do
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"abc\n".chomp("").should == "abc"
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end
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it "removes a final carriage return, newline" do
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"abc\r\n".chomp("").should == "abc"
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end
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it "does not remove a final carriage return" do
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"abc\r".chomp("").should == "abc\r"
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end
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it "removes more than one trailing newlines" do
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"abc\n\n\n".chomp("").should == "abc"
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end
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it "removes more than one trailing carriage return, newline pairs" do
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"abc\r\n\r\n\r\n".chomp("").should == "abc"
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end
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it "taints the result if self is tainted" do
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"abc".taint.chomp("").tainted?.should be_true
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end
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it "returns an empty String when self is empty" do
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"".chomp("").should == ""
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end
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end
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describe "when passed '\\n'" do
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it "removes one trailing newline" do
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"abc\n\n".chomp("\n").should == "abc\n"
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end
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it "removes one trailing carriage return" do
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"abc\r\r".chomp("\n").should == "abc\r"
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end
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it "removes one trailing carrige return, newline pair" do
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"abc\r\n\r\n".chomp("\n").should == "abc\r\n"
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end
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it "taints the result if self is tainted" do
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"abc".taint.chomp("\n").tainted?.should be_true
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end
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it "returns an empty String when self is empty" do
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"".chomp("\n").should == ""
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end
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end
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describe "when passed an Object" do
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it "calls #to_str to convert to a String" do
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arg = mock("string chomp")
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arg.should_receive(:to_str).and_return("bc")
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"abc".chomp(arg).should == "a"
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end
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it "raises a TypeError if #to_str does not return a String" do
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arg = mock("string chomp")
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arg.should_receive(:to_str).and_return(1)
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lambda { "abc".chomp(arg) }.should raise_error(TypeError)
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end
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end
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describe "when passed a String" do
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it "removes the trailing characters if they match the argument" do
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"abcabc".chomp("abc").should == "abc"
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end
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it "does not modify the String if the argument does not match the trailing characters" do
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"abc".chomp("def").should == "abc"
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end
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it "returns an empty String when self is empty" do
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"".chomp("abc").should == ""
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end
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it "taints the result if self is tainted" do
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"abc".taint.chomp("abc").tainted?.should be_true
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end
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it "does not taint the result when the argument is tainted" do
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"abc".chomp("abc".taint).tainted?.should be_false
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end
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end
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end
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describe "String#chomp!" do
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describe "when passed no argument" do
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before do
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# Ensure that $/ is set to the default value
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@dollar_slash, $/ = $/, "\n"
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end
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after do
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$/ = @dollar_slash
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end
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it "modifies self" do
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str = "abc\n"
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str.chomp!.should equal(str)
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end
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it "returns nil if self is not modified" do
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"abc".chomp!.should be_nil
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end
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it "removes one trailing newline" do
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"abc\n\n".chomp!.should == "abc\n"
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end
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it "removes one trailing carriage return" do
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"abc\r\r".chomp!.should == "abc\r"
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end
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it "removes one trailing carrige return, newline pair" do
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"abc\r\n\r\n".chomp!.should == "abc\r\n"
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end
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it "returns nil when self is empty" do
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"".chomp!.should be_nil
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end
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it "taints the result if self is tainted" do
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"abc\n".taint.chomp!.tainted?.should be_true
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end
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it "returns subclass instances when called on a subclass" do
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str = StringSpecs::MyString.new("hello\n").chomp!
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str.should be_an_instance_of(StringSpecs::MyString)
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end
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it "removes trailing characters that match $/ when it has been assigned a value" do
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$/ = "cdef"
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"abcdef".chomp!.should == "ab"
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end
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end
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describe "when passed nil" do
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it "returns nil" do
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"abc\r\n".chomp!(nil).should be_nil
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end
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it "returns nil when self is empty" do
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"".chomp!(nil).should be_nil
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end
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end
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describe "when passed ''" do
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it "removes a final newline" do
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"abc\n".chomp!("").should == "abc"
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end
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it "removes a final carriage return, newline" do
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"abc\r\n".chomp!("").should == "abc"
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end
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it "does not remove a final carriage return" do
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"abc\r".chomp!("").should be_nil
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end
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it "removes more than one trailing newlines" do
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"abc\n\n\n".chomp!("").should == "abc"
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end
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it "removes more than one trailing carriage return, newline pairs" do
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"abc\r\n\r\n\r\n".chomp!("").should == "abc"
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end
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it "taints the result if self is tainted" do
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"abc\n".taint.chomp!("").tainted?.should be_true
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end
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it "returns nil when self is empty" do
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"".chomp!("").should be_nil
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end
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end
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describe "when passed '\\n'" do
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it "removes one trailing newline" do
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"abc\n\n".chomp!("\n").should == "abc\n"
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end
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it "removes one trailing carriage return" do
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"abc\r\r".chomp!("\n").should == "abc\r"
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end
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it "removes one trailing carrige return, newline pair" do
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"abc\r\n\r\n".chomp!("\n").should == "abc\r\n"
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end
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it "taints the result if self is tainted" do
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"abc\n".taint.chomp!("\n").tainted?.should be_true
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end
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it "returns nil when self is empty" do
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"".chomp!("\n").should be_nil
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end
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end
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describe "when passed an Object" do
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it "calls #to_str to convert to a String" do
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arg = mock("string chomp")
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arg.should_receive(:to_str).and_return("bc")
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"abc".chomp!(arg).should == "a"
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end
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it "raises a TypeError if #to_str does not return a String" do
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arg = mock("string chomp")
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arg.should_receive(:to_str).and_return(1)
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lambda { "abc".chomp!(arg) }.should raise_error(TypeError)
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end
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end
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describe "when passed a String" do
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it "removes the trailing characters if they match the argument" do
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"abcabc".chomp!("abc").should == "abc"
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end
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it "returns nil if the argument does not match the trailing characters" do
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"abc".chomp!("def").should be_nil
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end
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it "returns nil when self is empty" do
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"".chomp!("abc").should be_nil
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end
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it "taints the result if self is tainted" do
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"abc".taint.chomp!("abc").tainted?.should be_true
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end
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it "does not taint the result when the argument is tainted" do
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"abc".chomp!("abc".taint).tainted?.should be_false
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end
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end
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it "raises a #{frozen_error_class} on a frozen instance when it is modified" do
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a = "string\n\r"
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a.freeze
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lambda { a.chomp! }.should raise_error(frozen_error_class)
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end
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# see [ruby-core:23666]
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it "raises a #{frozen_error_class} on a frozen instance when it would not be modified" do
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a = "string\n\r"
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a.freeze
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lambda { a.chomp!(nil) }.should raise_error(frozen_error_class)
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lambda { a.chomp!("x") }.should raise_error(frozen_error_class)
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end
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end
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with_feature :encoding do
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describe "String#chomp" do
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before :each do
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@before_separator = $/
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end
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after :each do
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$/ = @before_separator
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end
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it "does not modify a multi-byte character" do
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"あれ".chomp.should == "あれ"
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end
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it "removes the final carriage return, newline from a multibyte String" do
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"あれ\r\n".chomp.should == "あれ"
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end
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it "removes the final carriage return, newline from a non-ASCII String" do
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str = "abc\r\n".encode "utf-32be"
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str.chomp.should == "abc".encode("utf-32be")
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end
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it "removes the final carriage return, newline from a non-ASCII String when the record separator is changed" do
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$/ = "\n".encode("utf-8")
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str = "abc\r\n".encode "utf-32be"
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str.chomp.should == "abc".encode("utf-32be")
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end
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end
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describe "String#chomp!" do
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before :each do
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@before_separator = $/
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end
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after :each do
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$/ = @before_separator
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end
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it "returns nil when the String is not modified" do
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"あれ".chomp!.should be_nil
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end
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it "removes the final carriage return, newline from a multibyte String" do
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"あれ\r\n".chomp!.should == "あれ"
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end
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it "removes the final carriage return, newline from a non-ASCII String" do
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str = "abc\r\n".encode "utf-32be"
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str.chomp!.should == "abc".encode("utf-32be")
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end
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it "removes the final carriage return, newline from a non-ASCII String when the record separator is changed" do
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$/ = "\n".encode("utf-8")
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str = "abc\r\n".encode "utf-32be"
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str.chomp!.should == "abc".encode("utf-32be")
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end
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end
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end
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