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describe :file_zero, shared: true do
before :each do
@zero_file = tmp("test.txt")
@nonzero_file = tmp("test2.txt")
@dir = tmp("dir")
Dir.mkdir @dir
touch @zero_file
touch(@nonzero_file) { |f| f.puts "hello" }
end
after :each do
rm_r @zero_file, @nonzero_file
rm_r @dir
end
it "returns true if the file is empty" do
@object.send(@method, @zero_file).should == true
end
it "returns false if the file is not empty" do
@object.send(@method, @nonzero_file).should == false
end
it "accepts an object that has a #to_path method" do
@object.send(@method, mock_to_path(@zero_file)).should == true
end
platform_is :windows do
it "returns true for NUL" do
@object.send(@method, 'NUL').should == true
@object.send(@method, 'nul').should == true
end
end
platform_is_not :windows do
it "returns true for /dev/null" do
@object.send(@method, File.realpath('/dev/null')).should == true
end
end
it "raises an ArgumentError if not passed one argument" do
lambda { File.zero? }.should raise_error(ArgumentError)
end
it "raises a TypeError if not passed a String type" do
lambda { @object.send(@method, nil) }.should raise_error(TypeError)
lambda { @object.send(@method, true) }.should raise_error(TypeError)
lambda { @object.send(@method, false) }.should raise_error(TypeError)
end
it "returns true inside a block opening a file if it is empty" do
File.open(@zero_file,'w') do
@object.send(@method, @zero_file).should == true
end
end
# See https://bugs.ruby-lang.org/issues/449 for background
it "returns true or false for a directory" do
@object.send(@method, @dir).should be_true_or_false
end
end
describe :file_zero_missing, shared: true do
it "returns false if the file does not exist" do
@object.send(@method, 'fake_file').should == false
end
end
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