Add basic test for dotplot layer artist.

glue_plotly/common/dotplot.py

@@ -4,17 +4,18 @@
 
 from glue.core import BaseData
 
-from .common import color_info
+from .common import color_info, dimensions
 
 
 def dot_radius(viewer, layer_state):
     edges = layer_state.histogram[0]
     viewer_state = viewer.state
     diam_world = min([edges[i + 1] - edges[i] for i in range(len(edges) - 1)])
-    diam = diam_world * viewer.figure.layout.width / abs(viewer_state.x_max - viewer_state.x_min)
+    width, height = dimensions(viewer)
+    diam = diam_world * width / abs(viewer_state.x_max - viewer_state.x_min)
     if viewer_state.y_min is not None and viewer_state.y_max is not None:
         max_diam_world_v = 1
-        diam_pixel_v = max_diam_world_v * viewer.figure.layout.height / abs(viewer_state.y_max - viewer_state.y_min)
+        diam_pixel_v = max_diam_world_v * height / abs(viewer_state.y_max - viewer_state.y_min)
         diam = min(diam_pixel_v, diam)
     return diam / 2
 

glue_plotly/common/tests/test_dotplot.py

@@ -0,0 +1,78 @@
+from numpy import unique
+from plotly.graph_objs import Scatter
+
+from glue.core import Data
+from glue_qt.app import GlueApplication
+from glue_qt.viewers.histogram import HistogramViewer
+
+from glue_plotly.common import sanitize
+from glue_plotly.common.dotplot import traces_for_layer
+
+from glue_plotly.viewers.histogram.viewer import PlotlyHistogramView
+from glue_plotly.viewers.histogram.dotplot_layer_artist import PlotlyDotplotLayerArtist
+
+
+class SimpleDotplotViewer(PlotlyHistogramView):
+    _data_artist_cls = PlotlyDotplotLayerArtist
+    _subset_artist_cls = PlotlyDotplotLayerArtist
+
+
+class TestDotplot:
+
+    def setup_method(self, method):
+        x = [86,  86,  76,  78,  93, 100,  90,  87,  73,  61,  71,  68,  78,
+             9,  87,  32,  34,   2,  57,  79,  48,   5,   8,  19,   7,  78,
+             16,  15,  58,  34,  20,  63,  96,  97,  86,  92,  35,  59,  75,
+             0,  53,  45,  59,  74,  59,   4,  69,  76,  97,  77,  24,  99,
+             50,   6,   1,  55,  13,  40,  27,  17,  92,  72,  40,  29,  64,
+             38,  77,  11,  91,  23,  59,  92,   5,  88,  15,  90,  40, 100,
+             47,  28,   3,  44,  89,  75,  13,  94,  95,  43,  17,  88,   6,
+             94, 100,  28,  45,  36,  63,  14,  90,  66]
+        self.data = Data(label="dotplot", x=x)
+        self.app = GlueApplication()
+        self.app.session.data_collection.append(self.data)
+        self.viewer = self.app.new_data_viewer(HistogramViewer)
+        self.viewer.add_data(self.data)
+        self.mask, self.sanitized = sanitize(self.data['x'])
+
+        viewer_state = self.viewer.state
+        viewer_state.hist_n_bin = 18
+        viewer_state.x_axislabel_size = 14
+        viewer_state.y_axislabel_size = 8
+        viewer_state.x_ticklabel_size = 18
+        viewer_state.y_ticklabel_size = 20
+        viewer_state.x_min = 0
+        viewer_state.x_max = 100
+        viewer_state.y_min = 0
+        viewer_state.y_max = 15
+        viewer_state.x_axislabel = 'X Axis'
+        viewer_state.y_axislabel = 'Y Axis'
+
+        self.layer = self.viewer.layers[0]
+        self.layer.state.color = '#0e1dab'
+        self.layer.state.alpha = 0.85
+
+    def teardown_method(self, method):
+        self.viewer.close(warn=False)
+        self.viewer = None
+        self.app.close()
+        self.app = None
+
+    def test_basic_dots(self):
+        traces = traces_for_layer(self.viewer, self.layer.state)
+        assert len(traces) == 1
+        dots = traces[0]
+        assert isinstance(dots, Scatter)
+
+        assert len(unique(dots.x)) == 18
+        expected_y = (1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 1,
+                      2, 3, 4, 5, 6, 1, 2, 3, 4, 1, 2, 3, 1, 2,
+                      3, 4, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2,
+                      3, 4, 5, 1, 2, 1, 2, 3, 4, 5, 6, 7, 1, 2,
+                      3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 5, 6, 7, 8,
+                      1, 2, 3, 4, 1, 2, 3, 4, 5, 6, 7, 1, 2, 3,
+                      4, 5, 6, 7, 8, 9, 10, 11, 1, 2, 3, 4, 5,
+                      6, 7, 8)
+
+        assert dots.y == expected_y
+        assert dots.marker.size == 16  # Default figure is 640x480