Method run_test

Test/testlib/encoder.py:220–258

Run the test N times. Args: image: The test image to compress. block_size: The block size to use. preset: The quality-performance preset to use. repeats: The number of test runs. keep_output: Should the test preserve outpu

(self, image: TestImage, block_size: str, preset: str,
                 repeats: int, keep_output: bool = True,
                 threads: Optional[int] = None)

        return re.compile('^(?!x)x$')

    def run_test(self, image: TestImage, block_size: str, preset: str,
                 repeats: int, keep_output: bool = True,
                 threads: Optional[int] = None) -> RunResult:
        '''
        Run the test N times.

        Args:
            image: The test image to compress.
            block_size: The block size to use.
            preset: The quality-performance preset to use.
            repeats: The number of test runs.
            keep_output: Should the test preserve output images?
            threads: The thread count to use.

        Return:
            Tuple containing PSNR in dB, total time in seconds, coding time
            in seconds, and coding rate in MT/s.
        '''
        # pylint: disable=assignment-from-no-return
        command = self.build_cli(image, block_size, preset, keep_output,
                                 threads)

        # Execute test runs keeping best results
        best_psnr = 0.0
        best_total_time = sys.float_info.max
        best_coding_time = sys.float_info.max
        best_coding_rate = 0.0

        for _ in range(0, repeats):
            output = self.execute(command)
            result = self.parse_output(image, output)

            # Keep the best results (highest PSNR, lowest times, highest rate)
            best_psnr = max(best_psnr, result[0])
            best_total_time = min(best_total_time, result[1])
            best_coding_time = min(best_coding_time, result[2])
            best_coding_rate = max(best_coding_rate, result[3])

        return (best_psnr, best_total_time, best_coding_time, best_coding_rate)


class Encoder2x(EncoderBase):