1------------------------------------------------------------------------------- 2 These tests are not unit or regression tests. 3------------------------------------------------------------------------------- 4 5This is because it is not possible to compare output from Image_Driver with an 6expected "value" (i.e. is this graph equal to this graph). The problem is similar 7to testing user interfaces. 8 9The provided test "cases" are visual test suites that renders Image_Driver output, 10the output should then be viewed and checked for inconsistencies on a visual base, 11fx. this line chart does not show as _expected_, this gradient fill does not fill 12to the edges of the area, the text does not align properly, etc.