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51 lines
1.5 KiB
Ruby
51 lines
1.5 KiB
Ruby
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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#lstrip" do
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it "returns a copy of self with leading whitespace removed" do
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" hello ".lstrip.should == "hello "
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" hello world ".lstrip.should == "hello world "
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"\n\r\t\n\v\r hello world ".lstrip.should == "hello world "
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"hello".lstrip.should == "hello"
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"\000 \000hello\000 \000".lstrip.should == "\000 \000hello\000 \000"
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end
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it "does not strip leading \\0" do
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"\x00hello".lstrip.should == "\x00hello"
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end
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it "taints the result when self is tainted" do
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"".taint.lstrip.tainted?.should == true
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"ok".taint.lstrip.tainted?.should == true
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" ok".taint.lstrip.tainted?.should == true
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end
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end
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describe "String#lstrip!" do
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it "modifies self in place and returns self" do
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a = " hello "
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a.lstrip!.should equal(a)
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a.should == "hello "
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a = "\000 \000hello\000 \000"
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a.lstrip!
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a.should == "\000 \000hello\000 \000"
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end
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it "returns nil if no modifications were made" do
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a = "hello"
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a.lstrip!.should == nil
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a.should == "hello"
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end
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it "raises a RuntimeError on a frozen instance that is modified" do
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lambda { " hello ".freeze.lstrip! }.should raise_error(RuntimeError)
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end
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# see [ruby-core:23657]
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it "raises a RuntimeError on a frozen instance that would not be modified" do
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lambda { "hello".freeze.lstrip! }.should raise_error(RuntimeError)
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lambda { "".freeze.lstrip! }.should raise_error(RuntimeError)
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end
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end
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