move test_reset_limits into test_viewer.py

glue/viewers/scatter/tests/test_viewer.py

@@ -1,3 +1,6 @@
+import numpy as np
+from numpy.testing import assert_allclose
+
 from glue.tests.visual.helpers import visual_test
 
 from glue.viewers.scatter.viewer import SimpleScatterViewer
@@ -24,3 +27,35 @@ def test_simple_viewer():
     app.data_collection.new_subset_group(label='subset1', subset_state=data1.id['x'] > 2)
 
     return viewer.figure
+
+
+def test_reset_limits():
+
+    data1 = Data(x=np.arange(1000), y=np.arange(1000) + 1000, label='data')
+
+    app = Application()
+    app.data_collection.append(data1)
+
+    viewer = app.new_data_viewer(SimpleScatterViewer)
+    viewer.add_data(data1)
+
+    viewer.state.reset_limits()
+
+    # Note that there is a margin included which is why the limits are not 0 to 999
+
+    assert_allclose(viewer.state.x_min, -39.96)
+    assert_allclose(viewer.state.x_max, 1038.96)
+
+    assert_allclose(viewer.state.y_min, 1000 - 39.96)
+    assert_allclose(viewer.state.y_max, 1000 + 1038.96)
+
+    viewer.state.x_limits_percentile = 90
+    viewer.state.y_limits_percentile = 80
+
+    viewer.state.reset_limits()
+
+    assert_allclose(viewer.state.x_min, 13.986)
+    assert_allclose(viewer.state.x_max, 985.014)
+
+    assert_allclose(viewer.state.y_min, 1000 + 67.932)
+    assert_allclose(viewer.state.y_max, 1000 + 931.068)