1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe :kernel_remove_instance_variable, :shared => true do
it "returns the instance variable's value" do
value = @instance.send :remove_instance_variable, @object
value.should == "hello"
end
it "removes the instance variable" do
@instance.send :remove_instance_variable, @object
@instance.instance_variable_defined?(@object).should be_false
end
end
describe "Kernel#remove_instance_variable" do
before do
@instance = KernelSpecs::InstanceVariable.new
end
it "is a private method" do
Kernel.should have_private_instance_method(:remove_instance_variable)
end
it "raises a NameError if the instance variable is not defined" do
lambda do
@instance.send :remove_instance_variable, :@unknown
end.should raise_error(NameError)
end
it "raises a TypeError if passed an Object not defining #to_str" do
lambda do
obj = mock("kernel remove_instance_variable")
@instance.send :remove_instance_variable, obj
end.should raise_error(TypeError)
end
describe "when passed a String" do
it_behaves_like :kernel_remove_instance_variable, nil, "@greeting"
end
describe "when passed a Symbol" do
it_behaves_like :kernel_remove_instance_variable, nil, :@greeting
end
describe "when passed an Object" do
it "calls #to_str to convert the argument" do
name = mock("kernel remove_instance_variable")
name.should_receive(:to_str).and_return("@greeting")
@instance.send :remove_instance_variable, name
end
end
end
|
