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require File.expand_path('../../spec_helper', __FILE__)
describe "A Symbol literal" do
it "is a ':' followed by any number of valid characters" do
a = :foo
a.should be_kind_of(Symbol)
a.inspect.should == ':foo'
end
it "is a ':' followed by any valid variable, method, or constant name" do
# Add more of these?
[ :Foo,
:foo,
:@foo,
:@@foo,
:$foo,
:_,
:~,
:- ,
:FOO,
:_Foo,
:&,
:_9
].each { |s| s.should be_kind_of(Symbol) }
end
it "is a ':' followed by a single- or double-quoted string that may contain otherwise invalid characters" do
[ [:'foo bar', ':"foo bar"'],
[:'++', ':"++"'],
[:'9', ':"9"'],
[:"foo #{1 + 1}", ':"foo 2"'],
[:"foo\nbar", ':"foo\nbar"'],
].each { |sym, str|
sym.should be_kind_of(Symbol)
sym.inspect.should == str
}
end
it "may contain '::' in the string" do
:'Some::Class'.should be_kind_of(Symbol)
end
it "is converted to a literal, unquoted representation if the symbol contains only valid characters" do
a, b, c = :'foo', :'+', :'Foo__9'
a.should be_kind_of(Symbol)
a.inspect.should == ':foo'
b.should be_kind_of(Symbol)
b.inspect.should == ':+'
c.should be_kind_of(Symbol)
c.inspect.should == ':Foo__9'
end
it "can be created by the %s-delimited expression" do
a, b = :'foo bar', %s{foo bar}
b.should be_kind_of(Symbol)
b.inspect.should == ':"foo bar"'
b.should == a
end
it "is the same object when created from identical strings" do
var = "@@var"
[ [:symbol, :symbol],
[:'a string', :'a string'],
[:"#{var}", :"#{var}"]
].each { |a, b|
a.should equal(b)
}
end
ruby_version_is ""..."1.9" do
it "does not contain null in the string" do
lambda { eval ':"\0" ' }.should raise_error(SyntaxError)
end
end
ruby_version_is "1.9"..."2.0" do
it "can contain null in the string" do
eval(':"\0" ').inspect.should == ':"\\x00"'
end
end
ruby_version_is "2.0" do
it "can contain null in the string" do
eval(':"\0" ').inspect.should == ':"\\0"'
end
end
ruby_version_is "2.1"..."" do
it "can contain null in the string" do
eval(':"\0" ').inspect.should == ':"\\000"'
end
end
end
language_version __FILE__, 'symbol'
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