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describe :module_class_eval, shared: true do
# TODO: This should probably be replaced with a "should behave like" that uses
# the many scoping/binding specs from kernel/eval_spec, since most of those
# behaviors are the same for instance_eval. See also module_eval/class_eval.
it "evaluates a given string in the context of self" do
ModuleSpecs.send(@method, "self").should == ModuleSpecs
ModuleSpecs.send(@method, "1 + 1").should == 2
end
it "does not add defined methods to other classes" do
FalseClass.send(@method) do
def foo
'foo'
end
end
-> {42.foo}.should raise_error(NoMethodError)
end
it "resolves constants in the caller scope" do
ModuleSpecs::ClassEvalTest.get_constant_from_scope.should == ModuleSpecs::Lookup
end
it "resolves constants in the caller scope ignoring send" do
ModuleSpecs::ClassEvalTest.get_constant_from_scope_with_send(@method).should == ModuleSpecs::Lookup
end
it "resolves constants in the receiver's scope" do
ModuleSpecs.send(@method, "Lookup").should == ModuleSpecs::Lookup
ModuleSpecs.send(@method, "Lookup::LOOKIE").should == ModuleSpecs::Lookup::LOOKIE
end
it "defines constants in the receiver's scope" do
ModuleSpecs.send(@method, "module NewEvaluatedModule;end")
ModuleSpecs.const_defined?(:NewEvaluatedModule, false).should == true
end
it "evaluates a given block in the context of self" do
ModuleSpecs.send(@method) { self }.should == ModuleSpecs
ModuleSpecs.send(@method) { 1 + 1 }.should == 2
end
it "passes the module as the first argument of the block" do
given = nil
ModuleSpecs.send(@method) do |block_parameter|
given = block_parameter
end
given.should equal ModuleSpecs
end
it "uses the optional filename and lineno parameters for error messages" do
ModuleSpecs.send(@method, "[__FILE__, __LINE__]", "test", 102).should == ["test", 102]
end
ruby_version_is "3.3" do
it "uses the caller location as default filename" do
ModuleSpecs.send(@method, "[__FILE__, __LINE__]").should == ["(eval at #{__FILE__}:#{__LINE__})", 1]
end
end
it "converts a non-string filename to a string using to_str" do
(file = mock(__FILE__)).should_receive(:to_str).and_return(__FILE__)
ModuleSpecs.send(@method, "1+1", file)
(file = mock(__FILE__)).should_receive(:to_str).and_return(__FILE__)
ModuleSpecs.send(@method, "1+1", file, 15)
end
it "raises a TypeError when the given filename can't be converted to string using to_str" do
(file = mock('123')).should_receive(:to_str).and_return(123)
-> { ModuleSpecs.send(@method, "1+1", file) }.should raise_error(TypeError, /can't convert MockObject to String/)
end
it "converts non string eval-string to string using to_str" do
(o = mock('1 + 1')).should_receive(:to_str).and_return("1 + 1")
ModuleSpecs.send(@method, o).should == 2
(o = mock('1 + 1')).should_receive(:to_str).and_return("1 + 1")
ModuleSpecs.send(@method, o, "file.rb").should == 2
(o = mock('1 + 1')).should_receive(:to_str).and_return("1 + 1")
ModuleSpecs.send(@method, o, "file.rb", 15).should == 2
end
it "raises a TypeError when the given eval-string can't be converted to string using to_str" do
o = mock('x')
-> { ModuleSpecs.send(@method, o) }.should raise_error(TypeError, "no implicit conversion of MockObject into String")
(o = mock('123')).should_receive(:to_str).and_return(123)
-> { ModuleSpecs.send(@method, o) }.should raise_error(TypeError, /can't convert MockObject to String/)
end
it "raises an ArgumentError when no arguments and no block are given" do
-> { ModuleSpecs.send(@method) }.should raise_error(ArgumentError, "wrong number of arguments (given 0, expected 1..3)")
end
it "raises an ArgumentError when more than 3 arguments are given" do
-> {
ModuleSpecs.send(@method, "1 + 1", "some file", 0, "bogus")
}.should raise_error(ArgumentError, "wrong number of arguments (given 4, expected 1..3)")
end
it "raises an ArgumentError when a block and normal arguments are given" do
-> {
ModuleSpecs.send(@method, "1 + 1") { 1 + 1 }
}.should raise_error(ArgumentError, "wrong number of arguments (given 1, expected 0)")
end
# This case was found because Rubinius was caching the compiled
# version of the string and not duping the methods within the
# eval, causing the method addition to change the static scope
# of the shared CompiledCode.
it "adds methods respecting the lexical constant scope" do
code = "def self.attribute; C; end"
a = Class.new do
self::C = "A"
end
b = Class.new do
self::C = "B"
end
a.send @method, code
b.send @method, code
a.attribute.should == "A"
b.attribute.should == "B"
end
it "activates refinements from the eval scope" do
refinery = Module.new do
refine ModuleSpecs::NamedClass do
def foo
"bar"
end
end
end
mid = @method
result = nil
Class.new do
using refinery
result = send(mid, "ModuleSpecs::NamedClass.new.foo")
end
result.should == "bar"
end
it "activates refinements from the eval scope with block" do
refinery = Module.new do
refine ModuleSpecs::NamedClass do
def foo
"bar"
end
end
end
mid = @method
result = nil
Class.new do
using refinery
result = send(mid) do
ModuleSpecs::NamedClass.new.foo
end
end
result.should == "bar"
end
end
|
