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73 lines
2.3 KiB
Ruby
73 lines
2.3 KiB
Ruby
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describe :start_with, shared: true do
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# the @method should either be :to_s or :to_sym
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it "returns true only if beginning match" do
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s = "hello".send(@method)
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s.should.start_with?('h')
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s.should.start_with?('hel')
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s.should_not.start_with?('el')
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end
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it "returns true only if any beginning match" do
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"hello".send(@method).should.start_with?('x', 'y', 'he', 'z')
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end
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it "returns true if the search string is empty" do
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"hello".send(@method).should.start_with?("")
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"".send(@method).should.start_with?("")
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end
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it "converts its argument using :to_str" do
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s = "hello".send(@method)
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find = mock('h')
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find.should_receive(:to_str).and_return("h")
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s.should.start_with?(find)
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end
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it "ignores arguments not convertible to string" do
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"hello".send(@method).should_not.start_with?()
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-> { "hello".send(@method).start_with?(1) }.should raise_error(TypeError)
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-> { "hello".send(@method).start_with?(["h"]) }.should raise_error(TypeError)
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-> { "hello".send(@method).start_with?(1, nil, "h") }.should raise_error(TypeError)
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end
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it "uses only the needed arguments" do
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find = mock('h')
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find.should_not_receive(:to_str)
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"hello".send(@method).should.start_with?("h",find)
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end
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it "works for multibyte strings" do
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"céréale".send(@method).should.start_with?("cér")
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end
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it "supports regexps" do
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regexp = /[h1]/
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"hello".send(@method).should.start_with?(regexp)
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"1337".send(@method).should.start_with?(regexp)
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"foxes are 1337".send(@method).should_not.start_with?(regexp)
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"chunky\n12bacon".send(@method).should_not.start_with?(/12/)
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end
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it "supports regexps with ^ and $ modifiers" do
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regexp1 = /^\d{2}/
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regexp2 = /\d{2}$/
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"12test".send(@method).should.start_with?(regexp1)
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"test12".send(@method).should_not.start_with?(regexp1)
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"12test".send(@method).should_not.start_with?(regexp2)
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"test12".send(@method).should_not.start_with?(regexp2)
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end
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it "sets Regexp.last_match if it returns true" do
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regexp = /test-(\d+)/
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"test-1337".send(@method).start_with?(regexp).should be_true
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Regexp.last_match.should_not be_nil
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Regexp.last_match[1].should == "1337"
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$1.should == "1337"
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"test-asdf".send(@method).start_with?(regexp).should be_false
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Regexp.last_match.should be_nil
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$1.should be_nil
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end
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end
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