Change test_grdcontour.py to use static_earth_relief (GenericMappingT…

…ools#1741)

Co-authored-by: Dongdong Tian <[email protected]>

pygmt/tests/baseline/test_grdcontour.png.dvc

@@ -1,4 +1,4 @@
 outs:
-- md5: 9366e405a1be22b4c2515f24a3acae69
-  size: 217638
+- md5: 3a660b618cc84791f6dc85d67b6b10b8
+  size: 107934
   path: test_grdcontour.png

pygmt/tests/baseline/test_grdcontour_interval_file_full_opts.png.dvc

@@ -1,4 +1,4 @@
 outs:
-- md5: 25125246f541652071fac1771e5d7e88
-  size: 33966
+- md5: 8983696dc93da77fc1e9d7e8d8920836
+  size: 30055
   path: test_grdcontour_interval_file_full_opts.png

pygmt/tests/baseline/test_grdcontour_labels.png.dvc

@@ -1,4 +1,4 @@
 outs:
-- md5: 03a7cc6dea35f9383cbfb2683d7b7c1b
-  size: 223421
+- md5: cce113a8d8a9ba54c3bf08827b518287
+  size: 112762
   path: test_grdcontour_labels.png

pygmt/tests/baseline/test_grdcontour_slice.png.dvc

@@ -1,4 +1,4 @@
 outs:
-- md5: 48070d23c538d26eb96b5caaf440513a
-  size: 97314
+- md5: 66f1c57afea5075a02f5f90b2c225185
+  size: 53984
   path: test_grdcontour_slice.png

pygmt/tests/data/contours.txt

@@ -1,10 +1,8 @@
--6000 C
--5000 C
--4000 A
--3000 C 
--2000 C 
--1000 C
-0 A
-1000 C
-2000 A
-3000 C
+200 A
+300 C
+400 A
+500 C
+600 A
+700 C
+800 A
+900 C

pygmt/tests/test_grdcontour.py

@@ -6,8 +6,8 @@
 import numpy as np
 import pytest
 from pygmt import Figure
-from pygmt.datasets import load_earth_relief
 from pygmt.exceptions import GMTInvalidInput
+from pygmt.helpers.testing import load_static_earth_relief
 
 TEST_DATA_DIR = os.path.join(os.path.dirname(__file__), "data")
 TEST_CONTOUR_FILE = os.path.join(TEST_DATA_DIR, "contours.txt")
@@ -16,9 +16,9 @@
 @pytest.fixture(scope="module", name="grid")
 def fixture_grid():
     """
-    Load the grid data from the sample earth_relief file.
+    Load the grid data from the static_earth_relief file.
     """
-    return load_earth_relief(registration="gridline")
+    return load_static_earth_relief()
 
 
 @pytest.mark.mpl_image_compare
@@ -27,7 +27,9 @@ def test_grdcontour(grid):
     Plot a contour image using an xarray grid with fixed contour interval.
     """
     fig = Figure()
-    fig.grdcontour(grid, interval="1000", projection="W0/15c", frame=True)
+    fig.grdcontour(
+        grid=grid, interval=50, annotation=200, projection="M10c", frame=True
+    )
     return fig
 
 
@@ -39,10 +41,10 @@ def test_grdcontour_labels(grid):
     """
     fig = Figure()
     fig.grdcontour(
-        grid,
-        interval="1000",
-        annotation="5000",
-        projection="W0/15c",
+        grid=grid,
+        interval=50,
+        annotation=200,
+        projection="M10c",
         pen=["a1p,red", "c0.5p,black"],
         label_placement="d6c",
         frame=True,
@@ -55,28 +57,10 @@ def test_grdcontour_slice(grid):
     """
     Plot an contour image using an xarray grid that has been sliced.
     """
-    grid_ = grid.sel(lat=slice(-30, 30))
+    grid_ = grid.sel(lat=slice(-20, -10))
 
     fig = Figure()
-    fig.grdcontour(grid=grid_, interval="1000", projection="M15c", frame=True)
-    return fig
-
-
-@pytest.mark.mpl_image_compare
-def test_grdcontour_file():
-    """
-    Plot a contour image using grid file input.
-    """
-    fig = Figure()
-    fig.grdcontour(
-        "@earth_relief_01d_g",
-        interval="1000",
-        limit="0",
-        pen="0.5p,black",
-        region=[-180, 180, -70, 70],
-        projection="M15c",
-        frame=True,
-    )
+    fig.grdcontour(grid=grid_, interval=100, projection="M10c", frame=True)
     return fig
 
 
@@ -88,15 +72,19 @@ def test_grdcontour_interval_file_full_opts(grid):
     fig = Figure()
 
     comargs = {
-        "region": [-161.5, -154, 18.5, 23],
+        "region": [-53, -49, -20, -17],
         "interval": TEST_CONTOUR_FILE,
         "grid": grid,
-        "resample": "100",
+        "resample": 100,
         "projection": "M10c",
         "cut": 10,
     }
-    fig.grdcontour(**comargs, limit=(-25000, -1), pen=["a1p,blue", "c0.5p,blue"])
-    fig.grdcontour(**comargs, limit=0, pen=["a1p,black", "c0.5p,black"], frame=True)
+    # Plot contours below 650 in blue
+    fig.grdcontour(
+        **comargs, limit=(0, 649), pen=["a1p,blue", "c0.5p,blue"], frame=True
+    )
+    # Plot contours above 650 in black
+    fig.grdcontour(**comargs, limit=(650, 1000), pen=["a1p,black", "c0.5p,black"])
 
     return fig