Ruby

/*

* call-seq:

* File.absolute_path?(file_name) -> true or false

*

* Returns <code>true</code> if +file_name+ is an absolute path, and

* <code>false</code> otherwise.

*

* File.absolute_path?("c:/foo") #=> false (on Linux), true (on Windows)

*/

VALUE

rb_file_s_absolute_path_p(VALUE klass, VALUE fname)

{

VALUE path = rb_get_path(fname);

if (!rb_is_absolute_path(RSTRING_PTR(path))) return Qfalse;

return Qtrue;

}

rb_define_singleton_method(rb_cFile, "absolute_path?", rb_file_s_absolute_path_p, 1);

describe "File.absolute_path?" do

before :each do

@abs = File.expand_path(__FILE__)

end

it "returns true if it's an absolute pathname" do

File.absolute_path?(@abs).should == true

end

it "does not expand '~' to a home directory." do

File.absolute_path?('~').should == false

end

it "does not expand '~user' to a home directory." do

path = File.dirname(@abs)

Dir.chdir(path) do

File.absolute_path?('~user').should == false

end

end

it "calls #to_path on its argument" do

mock = mock_to_path(File.expand_path(__FILE__))

File.absolute_path?(mock).should == true

end

platform_is_not :windows do

it "takes into consideration the platform's root" do

File.absolute_path?("C:\\foo\\bar").should == false

File.absolute_path?("C:/foo/bar").should == false

File.absolute_path?("/foo/bar\\baz").should == true

end

end

platform_is :windows do

it "takes into consideration the platform path separator(s)" do

File.absolute_path?("C:\\foo\\bar").should == true

File.absolute_path?("C:/foo/bar").should == true

File.absolute_path?("/foo/bar\\baz").should == false

end

end

end