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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
# These specs only illustrate the basic autoload cases
# and where toplevel autoload behaves differently from
# Module#autoload. See those specs for more examples.
autoload :KSAutoloadA, "autoload_a.rb"
autoload :KSAutoloadB, fixture(__FILE__, "autoload_b.rb")
autoload :KSAutoloadC, fixture(__FILE__, "autoload_c.rb")
def check_autoload(const)
autoload? const
end
describe "Kernel#autoload" do
before :each do
@loaded_features = $".dup
end
after :each do
$".replace @loaded_features
end
it "is a private method" do
Kernel.should have_private_instance_method(:autoload)
end
it "registers a file to load the first time the named constant is accessed" do
Object.autoload?(:KSAutoloadA).should == "autoload_a.rb"
end
it "registers a file to load the first time the named constant is accessed" do
check_autoload(:KSAutoloadA).should == "autoload_a.rb"
end
it "sets the autoload constant in Object's constant table" do
Object.should have_constant(:KSAutoloadA)
end
it "loads the file when the constant is accessed" do
KSAutoloadB.loaded.should == :ksautoload_b
end
it "does not call Kernel.require or Kernel.load to load the file" do
Kernel.should_not_receive(:require)
Kernel.should_not_receive(:load)
KSAutoloadC.loaded.should == :ksautoload_c
end
it "can autoload in instance_eval" do
Object.new.instance_eval do
autoload :KSAutoloadD, fixture(__FILE__, "autoload_d.rb")
KSAutoloadD.loaded.should == :ksautoload_d
end
end
describe "when Object is frozen" do
it "raises a FrozenError before defining the constant" do
ruby_exe(fixture(__FILE__, "autoload_frozen.rb")).should == "#{frozen_error_class} - nil"
end
end
end
describe "Kernel#autoload?" do
it "is a private method" do
Kernel.should have_private_instance_method(:autoload?)
end
it "returns the name of the file that will be autoloaded" do
check_autoload(:KSAutoloadA).should == "autoload_a.rb"
end
it "returns nil if no file has been registered for a constant" do
check_autoload(:Manualload).should be_nil
end
end
Kernel.autoload :KSAutoloadBB, "no_autoload.rb"
describe "Kernel.autoload" do
before :all do
@non_existent = fixture __FILE__, "no_autoload.rb"
end
before :each do
@loaded_features = $".dup
ScratchPad.clear
end
after :each do
$".replace @loaded_features
end
it "registers a file to load the first time the toplevel constant is accessed" do
Kernel.autoload :KSAutoloadAA, @non_existent
Kernel.autoload?(:KSAutoloadAA).should == @non_existent
end
it "sets the autoload constant in Object's constant table" do
Object.should have_constant(:KSAutoloadBB)
end
it "calls #to_path on non-String filenames" do
p = mock('path')
p.should_receive(:to_path).and_return @non_existent
Kernel.autoload :KSAutoloadAA, p
end
end
describe "Kernel.autoload?" do
it "returns the name of the file that will be autoloaded" do
Kernel.autoload :KSAutoload, "autoload.rb"
Kernel.autoload?(:KSAutoload).should == "autoload.rb"
end
it "returns nil if no file has been registered for a constant" do
Kernel.autoload?(:Manualload).should be_nil
end
end
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