diff options
Diffstat (limited to 'spec/rubyspec/core/basicobject/instance_eval_spec.rb')
| -rw-r--r-- | spec/rubyspec/core/basicobject/instance_eval_spec.rb | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/spec/rubyspec/core/basicobject/instance_eval_spec.rb b/spec/rubyspec/core/basicobject/instance_eval_spec.rb deleted file mode 100644 index 3898e96b8b..0000000000 --- a/spec/rubyspec/core/basicobject/instance_eval_spec.rb +++ /dev/null @@ -1,180 +0,0 @@ -require File.expand_path('../../../spec_helper', __FILE__) -require File.expand_path('../fixtures/classes', __FILE__) - -describe "BasicObject#instance_eval" do - before :each do - ScratchPad.clear - end - - it "is a public instance method" do - BasicObject.should have_public_instance_method(:instance_eval) - end - - it "sets self to the receiver in the context of the passed block" do - a = BasicObject.new - a.instance_eval { self }.equal?(a).should be_true - end - - it "evaluates strings" do - a = BasicObject.new - a.instance_eval('self').equal?(a).should be_true - end - - it "expects a block with no arguments" do - lambda { "hola".instance_eval }.should raise_error(ArgumentError) - end - - it "takes no arguments with a block" do - lambda { "hola".instance_eval(4, 5) {|a,b| a + b } }.should raise_error(ArgumentError) - end - - it "yields the object to the block" do - "hola".instance_eval {|o| ScratchPad.record o } - ScratchPad.recorded.should == "hola" - end - - it "returns the result of the block" do - "hola".instance_eval { :result }.should == :result - end - - it "only binds the eval to the receiver" do - f = Object.new - f.instance_eval do - def foo - 1 - end - end - f.foo.should == 1 - lambda { Object.new.foo }.should raise_error(NoMethodError) - end - - it "preserves self in the original block when passed a block argument" do - prc = proc { self } - - old_self = prc.call - - new_self = Object.new - new_self.instance_eval(&prc).should == new_self - - prc.call.should == old_self - end - - # 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 "binds self to the receiver" do - s = "hola" - (s == s.instance_eval { self }).should be_true - o = mock('o') - (o == o.instance_eval("self")).should be_true - end - - it "executes in the context of the receiver" do - "Ruby-fu".instance_eval { size }.should == 7 - "hola".instance_eval("size").should == 4 - Object.class_eval { "hola".instance_eval("to_s") }.should == "hola" - Object.class_eval { "Ruby-fu".instance_eval{ to_s } }.should == "Ruby-fu" - - end - - it "has access to receiver's instance variables" do - BasicObjectSpecs::IVars.new.instance_eval { @secret }.should == 99 - BasicObjectSpecs::IVars.new.instance_eval("@secret").should == 99 - end - - it "treats block-local variables as local to the block" do - prc = instance_eval <<-CODE - proc do |x, prc| - if x - n = 2 - else - n = 1 - prc.call(true, prc) - n - end - end - CODE - - prc.call(false, prc).should == 1 - end - - it "sets class variables in the receiver" do - BasicObjectSpecs::InstEvalCVar.class_variables.should include(:@@count) - BasicObjectSpecs::InstEvalCVar.send(:class_variable_get, :@@count).should == 2 - end - - it "makes the receiver metaclass the scoped class when used with a string" do - obj = Object.new - obj.instance_eval %{ - class B; end - B - } - obj.singleton_class.const_get(:B).should be_an_instance_of(Class) - end - - it "gets constants in the receiver if a string given" do - BasicObjectSpecs::InstEvalOuter::Inner::X_BY_STR.should == 2 - end - - it "doesn't get constants in the receiver if a block given" do - BasicObjectSpecs::InstEvalOuter::Inner::X_BY_BLOCK.should be_nil - end - - it "raises a TypeError when defining methods on an immediate" do - lambda do - 1.instance_eval { def foo; end } - end.should raise_error(TypeError) - lambda do - :foo.instance_eval { def foo; end } - end.should raise_error(TypeError) - end - -quarantine! do # Not clean, leaves cvars lying around to break other specs - it "scopes class var accesses in the caller when called on a Fixnum" do - # Fixnum can take instance vars - Fixnum.class_eval "@@__tmp_instance_eval_spec = 1" - (defined? @@__tmp_instance_eval_spec).should be_nil - - @@__tmp_instance_eval_spec = 2 - 1.instance_eval { @@__tmp_instance_eval_spec }.should == 2 - Fixnum.__send__(:remove_class_variable, :@@__tmp_instance_eval_spec) - end -end - - it "raises a TypeError when defining methods on numerics" do - lambda do - (1.0).instance_eval { def foo; end } - end.should raise_error(TypeError) - lambda do - (1 << 64).instance_eval { def foo; end } - end.should raise_error(TypeError) - end - - it "evaluates procs originating from methods" do - def meth(arg); arg; end - - m = method(:meth) - obj = Object.new - - obj.instance_eval(&m).should == obj - end - - it "evaluates string with given filename and linenumber" do - err = begin - Object.new.instance_eval("raise", "a_file", 10) - rescue => e - e - end - err.backtrace.first.split(":")[0..1].should == ["a_file", "10"] - end - - it "evaluates string with given filename and negative linenumber" do - err = begin - Object.new.instance_eval("\n\nraise\n", "b_file", -100) - rescue => e - e - end - err.backtrace.first.split(":")[0..1].should == ["b_file", "-98"] - end -end |
