update tests to config system

Author: leotrs

tests/manim.cfg

@@ -0,0 +1,14 @@
+[CLI]
+frame_rate = 15
+pixel_height = 480
+pixel_width = 854
+from_at_animation_number = 0
+upto_at_animation_number = -1
+png_mode = RGB
+movie_file_extension = .mp4
+write_to_movie = False
+write_all = False
+save_last_frame = False
+save_pngs = False
+save_as_gif = False
+leave_progress_bars = False

tests/test_cli/manim.cfg

@@ -0,0 +1,6 @@
+[CLI]
+movie_file_extension = .mp4
+write_to_movie = True
+# write_all = False
+save_last_frame = True
+# save_pngs = False

tests/tests_data/manim.cfg

@@ -0,0 +1,6 @@
+[CLI]
+movie_file_extension = .mp4
+write_to_movie = True
+# write_all = False
+save_last_frame = False
+# save_pngs = False