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94 lines
2.3 KiB
Ruby
94 lines
2.3 KiB
Ruby
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require File.expand_path('../../spec_helper', __FILE__)
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describe "A Symbol literal" do
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it "is a ':' followed by any number of valid characters" do
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a = :foo
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a.should be_kind_of(Symbol)
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a.inspect.should == ':foo'
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end
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it "is a ':' followed by any valid variable, method, or constant name" do
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# Add more of these?
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[ :Foo,
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:foo,
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:@foo,
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:@@foo,
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:$foo,
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:_,
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:~,
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:- ,
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:FOO,
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:_Foo,
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:&,
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:_9
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].each { |s| s.should be_kind_of(Symbol) }
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end
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it "is a ':' followed by a single- or double-quoted string that may contain otherwise invalid characters" do
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[ [:'foo bar', ':"foo bar"'],
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[:'++', ':"++"'],
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[:'9', ':"9"'],
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[:"foo #{1 + 1}", ':"foo 2"'],
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[:"foo\nbar", ':"foo\nbar"'],
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].each { |sym, str|
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sym.should be_kind_of(Symbol)
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sym.inspect.should == str
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}
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end
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it "may contain '::' in the string" do
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:'Some::Class'.should be_kind_of(Symbol)
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end
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it "is converted to a literal, unquoted representation if the symbol contains only valid characters" do
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a, b, c = :'foo', :'+', :'Foo__9'
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a.should be_kind_of(Symbol)
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a.inspect.should == ':foo'
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b.should be_kind_of(Symbol)
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b.inspect.should == ':+'
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c.should be_kind_of(Symbol)
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c.inspect.should == ':Foo__9'
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end
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it "can be created by the %s-delimited expression" do
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a, b = :'foo bar', %s{foo bar}
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b.should be_kind_of(Symbol)
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b.inspect.should == ':"foo bar"'
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b.should == a
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end
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it "is the same object when created from identical strings" do
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var = "@@var"
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[ [:symbol, :symbol],
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[:'a string', :'a string'],
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[:"#{var}", :"#{var}"]
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].each { |a, b|
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a.should equal(b)
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}
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end
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it "can contain null in the string" do
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eval(':"\0" ').inspect.should == ':"\\x00"'
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end
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it "can be an empty string" do
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c = :''
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c.should be_kind_of(Symbol)
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c.inspect.should == ':""'
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end
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it "can be :!, :!=, or :!~" do
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%w{'!', '!=', '!~'}.each do |sym|
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sym.to_sym.to_s.should == sym
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end
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end
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it "can be created from list syntax %i{a b c} without interpolation" do
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%i{a b #{c}}.should == [:a, :b, :"\#{c}"]
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end
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it "can be created from list syntax %I{a b c} with interpolation" do
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%I{a b #{"c"}}.should == [:a, :b, :c]
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end
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end
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