add some scatterpolargl tests

Author: etpinard

test/image/baselines/glpolar_style.png

@@ -0,0 +1,74 @@
+{
+  "data": [{
+    "type": "scatterpolargl",
+    "r": [1, 2, 3],
+    "theta": [50, 100, 200],
+    "marker": {"symbol": "square"}
+  }, {
+    "type": "scatterpolargl",
+    "r": [1, 2, 3],
+    "theta": [1, 2, 3],
+    "thetaunit": "radians"
+  }, {
+    "type": "scatterpolargl",
+    "r": ["a", "b", "c", "b"],
+    "theta": ["D", "C", "B", "A"],
+    "subplot": "polar2"
+  }, {
+    "type": "scatterpolargl",
+    "r": [50, 300, 900],
+    "theta": [0, 90, 180],
+    "subplot": "polar3"
+  }, {
+    "type": "scatterpolargl",
+    "mode": "lines",
+    "r": [3, 3, 4, 3],
+    "theta": [0, 45, 90, 270],
+    "fill": "toself",
+    "subplot": "polar4"
+  }],
+  "layout": {
+    "polar": {
+      "domain": {
+        "x": [0, 0.46],
+        "y": [0.56, 1]
+      },
+      "radialaxis": {
+        "range": [1, 4]
+      },
+      "angularaxis": {
+        "thetaunit": "radians"
+      }
+    },
+    "polar2": {
+      "domain": {
+        "x": [0, 0.46],
+        "y": [0, 0.42]
+      }
+    },
+    "polar3": {
+      "domain": {
+        "x": [0.54, 1],
+        "y": [0.56, 1]
+      },
+      "radialaxis": {
+        "type": "log",
+        "tickangle": 45
+      },
+      "sector": [0, 180]
+    },
+    "polar4": {
+      "domain": {
+        "x": [0.54, 1],
+        "y": [0, 0.44]
+      },
+      "radialaxis": {
+          "visible": false,
+          "range": [0, 6]
+      }
+    },
+    "showlegend": false,
+    "width": 600,
+    "height": 500
+  }
+}

test/image/mocks/glpolar_style.json

@@ -0,0 +1,88 @@
+var Plotly = require('@lib');
+var Lib = require('@src/lib');
+
+var createGraphDiv = require('../assets/create_graph_div');
+var destroyGraphDiv = require('../assets/destroy_graph_div');
+var fail = require('../assets/fail_test');
+var mouseEvent = require('../assets/mouse_event');
+
+var customAssertions = require('../assets/custom_assertions');
+var assertHoverLabelContent = customAssertions.assertHoverLabelContent;
+
+describe('Test scatterpolargl hover:', function() {
+    var gd;
+
+    afterEach(function() {
+        Plotly.purge(gd);
+        destroyGraphDiv();
+    });
+
+    function run(specs) {
+        gd = createGraphDiv();
+
+        var fig = Lib.extendDeep(
+            {width: 700, height: 500},
+            specs.mock || require('@mocks/glpolar_scatter.json')
+        );
+
+        if(specs.patch) {
+            fig = specs.patch(fig);
+        }
+
+        var pos = specs.pos || [200, 200];
+
+        return Plotly.newPlot(gd, fig).then(function() {
+            mouseEvent('mousemove', pos[0], pos[1]);
+            assertHoverLabelContent(specs);
+        });
+    }
+
+    [{
+        desc: 'base',
+        nums: 'r: 2.920135\nθ: 138.2489°',
+        name: 'Trial 4'
+    }, {
+        desc: '(no labels - out of sector)',
+        patch: function(fig) {
+            fig.layout.polar.sector = [15, 75];
+            return fig;
+        },
+        pos: [144, 350],
+        nums: '',
+        name: ''
+    }, {
+        desc: 'on a `thetaunit: radians` polar subplot',
+        patch: function(fig) {
+            fig.layout.polar.angularaxis.thetaunit = 'radians';
+            return fig;
+        },
+        nums: 'r: 2.920135\nθ: 2.412898',
+        name: 'Trial 4'
+    }, {
+        desc: 'on log radial axis',
+        patch: function(fig) {
+            fig.layout.polar.radialaxis.type = 'log';
+            return fig;
+        },
+        nums: 'r: 1.108937\nθ: 115.4969°',
+        name: 'Trial 3'
+    }, {
+        desc: 'on category axes',
+        mock: require('@mocks/polar_categories.json'),
+        patch: function(fig) {
+            fig.data.forEach(function(t) {
+                t.type = 'scatterpolargl';
+                t.fill = 'none';
+            });
+            return fig;
+        },
+        pos: [470, 80],
+        nums: 'r: 4\nθ: d',
+        name: 'angular cate...'
+    }]
+    .forEach(function(specs) {
+        it('should generate correct hover labels ' + specs.desc, function(done) {
+            run(specs).catch(fail).then(done);
+        });
+    });
+});