def test_shortcut(self):
"""Test that we can use display shortcuts with __getattr__."""
# Create map
grass_renderer = gj.GrassRenderer()
# Use shortcut
grass_renderer.d_rast(map="elevation")
grass_renderer.d_vect(map="roadsmajor")
def test_filename_property(self):
"""Test of GrassRenderer filename property."""
# Create map with unique filename
grass_renderer = gj.GrassRenderer()
grass_renderer.run("d.rast", map="elevation")
# Make sure image was created
self.assertFileExists(grass_renderer.filename)
def test_defaults(self):
"""Test that GrassRenderer can create a map with default settings."""
# Create a map with default inputs
grass_renderer = gj.GrassRenderer()
# Adding vectors and rasters to the map
grass_renderer.run("d.rast", map="elevation")
grass_renderer.run("d.vect", map="roadsmajor")
# Make sure image was created
self.assertFileExists(grass_renderer._filename)
def test_shortcut_error(self):
"""Test that passing an incorrect attribute raises
appropriate error"""
# Create map
grass_renderer = gj.GrassRenderer()
# Pass bad shortcuts
with self.assertRaisesRegex(AttributeError, "Module must begin with 'd_'"):
grass_renderer.r_watersheds()
with self.assertRaisesRegex(AttributeError, "d.module.does.not.exist"):
grass_renderer.d_module_does_not_exist()
def test_filename(self):
"""Test that GrassRenderer creates maps with unique filenames."""
# Create map with unique filename
custom_filename = "test_filename.png"
grass_renderer = gj.GrassRenderer(filename=custom_filename)
# Add files to self for cleanup later
self.files.append(custom_filename)
self.files.append(f"{custom_filename}.grass_vector_legend")
# Add a vector and a raster to the map
grass_renderer.run("d.rast", map="elevation")
grass_renderer.run("d.vect", map="roadsmajor")
# Make sure image was created
self.assertFileExists(custom_filename)
def test_image_creation(self):
"""Test that show() returns an image object."""
# Create map
grass_renderer = gj.GrassRenderer()
grass_renderer.d_rast(map="elevation")
self.assertTrue(grass_renderer.show(), "Failed to open PNG image")
def test_text(self):
"""Test that we can set a unique text_size in GrassRenderer."""
# Create map with unique text_size parameter
grass_renderer = gj.GrassRenderer(text_size=10)
grass_renderer.run("d.vect", map="roadsmajor")
grass_renderer.run("d.rast", map="elevation")
def test_env(self):
"""Test that we can hand an environment to GrassRenderer."""
# Create map with environment parameter
grass_renderer = gj.GrassRenderer(env=os.environ.copy())
# Add just a raster (again for variety)
grass_renderer.run("d.rast", map="elevation")
def test_hw(self):
"""Test that GrassRenderer creates maps with custom height and widths."""
# Create map with height and width parameters
grass_renderer = gj.GrassRenderer(width=400, height=400)
# Add just a vector (for variety here)
grass_renderer.run("d.vect", map="roadsmajor")