Corrosion resistance testing method for coated metal material, corrosion resistance testing device, corrosion resistance testing program, and recording medium

The invention discloses a method for testing corrosion resistance of a coated metal material. The coated metal material is formed by arranging an electrophoretic coating film on a steel plate. The corrosion resistance test method includes: an energization step in which a change over time in a current and/or a voltage obtained by measuring the change over time in the current and/or the voltage in a state in which a corrosion factor is brought into contact with the surface of the electrophoretic coating film; in the evaluation step, the film quality of the electrophoretic coating film (4) is evaluated on the basis of at least one of the slope in the change over time, the integrated value, and the time average value of the integrated value by applying a voltage and/or a current between the surface of the electrophoretic coating film and the steel sheet, and in the evaluation step, the film quality of the electrophoretic coating film (4) is evaluated on the basis of the current and/or voltage generated between th