def test_grid_by_count(self):
"""
Test error-free creation and return of a valid grid, with dimensions
provided as cell counts.
"""
grid = GridDimensions((2, 2), "count")
dims_by_count = grid.dims_by_count()
dims_by_count_expected = (2, 2)
self.assertEqual(dims_by_count, dims_by_count_expected)
def test_grid_width_to_count(self):
"""
Test error-free creation and return of a valid grid with dimensions
provided as cell widths, and the correct conversion of the grid to
a representation in cell counts.
"""
grid = GridDimensions((90, 90), "width")
dims_by_count = grid.dims_by_count()
dims_by_count_expected = (2, 4)
self.assertEqual(dims_by_count, dims_by_count_expected)
def test_tiny_grid_cells(self):
"""
Test correct conversion between grid representations when grid cell
widths are very small.
"""
grid = GridDimensions((2880, 2880), "count")
dims_by_width = grid.dims_by_width()
dims_by_width_expected = (0.0625, 0.125)
dims_by_count = grid.dims_by_count()
dims_by_count_expected = (2880, 2880)
self.assertEqual(dims_by_width, dims_by_width_expected)
self.assertEqual(dims_by_count, dims_by_count_expected)
def test_max_grid_dimensions(self):
"""
Test that a grid is successfully created when the maximum valid cell
widths are provided.
"""
grid = GridDimensions((180, 360), "width")
dims_by_width = grid.dims_by_width()
dims_by_width_expected = (180, 360)
dims_by_count = grid.dims_by_count()
dims_by_count_expected = (1, 1)
self.assertEqual(dims_by_width, dims_by_width_expected)
self.assertEqual(dims_by_count, dims_by_count_expected)
def test_float_grid_dims(self):
"""
Test the error-free creation of a valid grid with floating point
grid cell widths, and sensible conversion to a representation in
cell counts.
"""
grid = GridDimensions((0.5, 1.5), "width")
dims_by_width = grid.dims_by_width()
dims_by_width_expected = (0.5, 1.5)
dims_by_count = grid.dims_by_count()
dims_by_count_expected = (360, 240)
self.assertEqual(dims_by_width, dims_by_width_expected)
self.assertEqual(dims_by_count, dims_by_count_expected)
