Reinstate image comparison tests

.github/workflows/CI.yml

@@ -27,7 +27,7 @@ jobs:
             requirements: requirements.txt
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
@@ -39,11 +39,26 @@ jobs:
         python -m pip install pytest pytest-cov pytest-xdist
         python -m pip install -r ${{ matrix.requirements }} 
 
+    - name: Install ghostscript on Ubuntu
+      if: ${{ matrix.os == 'ubuntu-latest' }}
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y ghostscript
+
+    - name: Install ghostscript on macOS
+      if: ${{ matrix.os == 'macos-latest' }}
+      run: brew install ghostscript
+
+    - name: Install ghostscript on Windows
+      if: ${{ matrix.os == 'windows-latest' }}
+      run: choco install ghostscript -y
+      shell: powershell
+
     - name: Test with pytest
-      run: python -m pytest --cov=fgivenx
+      run: python -m pytest --cov=fgivenx -s -vv
 
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v1
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
 

README.rst

@@ -3,7 +3,7 @@ fgivenx: Functional Posterior Plotter
 =====================================
 :fgivenx:  Functional Posterior Plotter 
 :Author: Will Handley
-:Version: 2.5.0
+:Version: 2.5.1
 :Homepage: https://github.com/handley-lab/fgivenx
 :Documentation: http://fgivenx.readthedocs.io/
 

fgivenx/test/test_plot.py

@@ -3,6 +3,7 @@
 from fgivenx.plot import plot, plot_lines
 import matplotlib.pyplot as plt
 import matplotlib
+from matplotlib.testing.decorators import image_comparison
 
 
 def gen_plot_data():
@@ -16,6 +17,7 @@ def gen_plot_data():
     return x, y, z
 
 
+@image_comparison(baseline_images=['plot'], extensions=['pdf'])
 def test_plot():
     x, y, z = gen_plot_data()
 
@@ -24,13 +26,16 @@ def test_plot():
     assert type(cbar) is matplotlib.contour.QuadContourSet
 
 
+@image_comparison(baseline_images=['plot_transparent'], extensions=['pdf'])
 def test_plot_transparent():
     x, y, z = gen_plot_data()
 
     fig, ax = plt.subplots()
     cbar = plot(x, y, z, ax, alpha=0.7)
     assert type(cbar) is matplotlib.contour.QuadContourSet
 
+
+@image_comparison(baseline_images=['plot_transparent'], extensions=['pdf'])
 def test_plot_fineness():
     x, y, z = gen_plot_data()
 
@@ -46,24 +51,28 @@ def test_plot_wrong_argument():
         plot(x, y, z, wrong_argument=None)
 
 
+@image_comparison(baseline_images=['plot'], extensions=['pdf'])
 def test_plot_no_ax():
     plt.subplots()
     x, y, z = gen_plot_data()
     plot(x, y, z)
 
 
+@image_comparison(baseline_images=['plot_smooth'], extensions=['pdf'])
 def test_plot_smooth():
     plt.subplots()
     x, y, z = gen_plot_data()
     plot(x, y, z, smooth=1)
 
 
+@image_comparison(baseline_images=['plot_rasterize'], extensions=['pdf'])
 def test_plot_rasterize():
     plt.subplots()
     x, y, z = gen_plot_data()
     plot(x, y, z, rasterize_contours=True)
 
 
+@image_comparison(baseline_images=['plot_nolines'], extensions=['pdf'])
 def test_plot_nolines():
     plt.subplots()
     x, y, z = gen_plot_data()
@@ -81,18 +90,21 @@ def gen_line_data():
     return x, fsamps
 
 
+@image_comparison(baseline_images=['plot_lines'], extensions=['pdf'])
 def test_plot_lines():
     x, fsamps = gen_line_data()
     fig, ax = plt.subplots()
     plot_lines(x, fsamps, ax)
 
 
+@image_comparison(baseline_images=['plot_lines'], extensions=['pdf'])
 def test_plot_lines_no_ax():
     x, fsamps = gen_line_data()
     plt.subplots()
     plot_lines(x, fsamps)
 
 
+@image_comparison(baseline_images=['plot_lines_downsample'], extensions=['pdf'])
 def test_plot_lines_downsample():
     x, fsamps = gen_line_data()
     plt.subplots()