matplotlib
diff --git a/‎…s/test_axes_grid/imagegrid_cbar_mode.png‎ ‎…/test_axes_grid1/imagegrid_cbar_mode.png‎lib/mpl_toolkits/tests/baseline_images/test_axes_grid/imagegrid_cbar_mode.png renamed to lib/mpl_toolkits/tests/baseline_images/test_axes_grid1/imagegrid_cbar_mode.png b/‎…s/test_axes_grid/imagegrid_cbar_mode.png‎ ‎…/test_axes_grid1/imagegrid_cbar_mode.png‎lib/mpl_toolkits/tests/baseline_images/test_axes_grid/imagegrid_cbar_mode.png renamed to lib/mpl_toolkits/tests/baseline_images/test_axes_grid1/imagegrid_cbar_mode.png
diff --git a/‎lib/mpl_toolkits/tests/test_axes_grid.py‎
Lines changed: 0 additions & 56 deletions b/‎lib/mpl_toolkits/tests/test_axes_grid.py‎
Lines changed: 0 additions & 56 deletions
diff --git a/‎lib/mpl_toolkits/tests/test_axes_grid1.py‎
Lines changed: 50 additions & 0 deletions b/‎lib/mpl_toolkits/tests/test_axes_grid1.py‎
Lines changed: 50 additions & 0 deletions
@@ -3,6 +3,7 @@
 
 import matplotlib as mpl
 import matplotlib.pyplot as plt
+import matplotlib.ticker as mticker
 from matplotlib import cbook
 from matplotlib.backend_bases import MouseEvent
 from matplotlib.colors import LogNorm
@@ -568,3 +569,52 @@ def test_rgb_axes():
     g = rng.random((5, 5))
     b = rng.random((5, 5))
     ax.imshow_rgb(r, g, b, interpolation='none')
+
+
+# The original version of this test relied on mpl_toolkits's slightly different
+# colorbar implementation; moving to matplotlib's own colorbar implementation
+# caused the small image comparison error.
+@image_comparison(['imagegrid_cbar_mode.png'],
+                  remove_text=True, style='mpl20', tol=0.3)
+def test_imagegrid_cbar_mode_edge():
+    # Remove this line when this test image is regenerated.
+    plt.rcParams['pcolormesh.snap'] = False
+
+    X, Y = np.meshgrid(np.linspace(0, 6, 30), np.linspace(0, 6, 30))
+    arr = np.sin(X) * np.cos(Y) + 1j*(np.sin(3*Y) * np.cos(Y/2.))
+
+    fig = plt.figure(figsize=(18, 9))
+
+    positions = (241, 242, 243, 244, 245, 246, 247, 248)
+    directions = ['row']*4 + ['column']*4
+    cbar_locations = ['left', 'right', 'top', 'bottom']*2
+
+    for position, direction, location in zip(
+            positions, directions, cbar_locations):
+        grid = ImageGrid(fig, position,
+                         nrows_ncols=(2, 2),
+                         direction=direction,
+                         cbar_location=location,
+                         cbar_size='20%',
+                         cbar_mode='edge')
+        ax1, ax2, ax3, ax4, = grid
+
+        ax1.imshow(arr.real, cmap='nipy_spectral')
+        ax2.imshow(arr.imag, cmap='hot')
+        ax3.imshow(np.abs(arr), cmap='jet')
+        ax4.imshow(np.arctan2(arr.imag, arr.real), cmap='hsv')
+
+        # In each row/column, the "first" colorbars must be overwritten by the
+        # "second" ones.  To achieve this, clear out the axes first.
+        for ax in grid:
+            ax.cax.cla()
+            cb = ax.cax.colorbar(ax.images[0])
+
+
+def test_imagegrid():
+    fig = plt.figure()
+    grid = ImageGrid(fig, 111, nrows_ncols=(1, 1))
+    ax = grid[0]
+    im = ax.imshow([[1, 2]], norm=mpl.colors.LogNorm())
+    cb = ax.cax.colorbar(im)
+    assert isinstance(cb.locator, mticker.LogLocator)