tests of histogram hover label range format, and log-negative format

Author: alexcjohnson

test/jasmine/tests/hover_label_test.js

@@ -458,12 +458,12 @@ describe('hover info', function() {
         });
     });
 
-    describe('\'hover info for x/y/z traces', function() {
-        function _hover(gd, xpx, ypx) {
-            Fx.hover(gd, { xpx: xpx, ypx: ypx }, 'xy');
-            Lib.clearThrottle();
-        }
+    function _hover(gd, xpx, ypx) {
+        Fx.hover(gd, { xpx: xpx, ypx: ypx }, 'xy');
+        Lib.clearThrottle();
+    }
 
+    describe('\'hover info for x/y/z traces', function() {
         it('should display correct label content', function(done) {
             var gd = createGraphDiv();
 
@@ -501,6 +501,128 @@ describe('hover info', function() {
         });
     });
 
+    describe('hover info for negative data on a log axis', function() {
+        it('shows negative data even though it is infinitely off-screen', function(done) {
+            var gd = createGraphDiv();
+
+            Plotly.plot(gd, [{x: [1, 2, 3], y: [1, -5, 10]}], {
+                yaxis: {type: 'log'},
+                width: 500,
+                height: 400,
+                margin: {l: 0, t: 0, r: 0, b: 0}
+            })
+            .then(function() {
+                _hover(gd, 250, 200);
+                assertHoverLabelContent({
+                    nums: '\u22125', // unicode minus
+                    axis: '2'
+                });
+            })
+            .catch(fail)
+            .then(done);
+        });
+    });
+
+    describe('histogram hover info', function() {
+        it('shows the data range when bins have multiple values', function(done) {
+            var gd = createGraphDiv();
+
+            Plotly.plot(gd, [{
+                x: [0, 2, 3, 4, 5, 6, 7],
+                xbins: {start: -0.5, end: 8.5, size: 3},
+                type: 'histogram'
+            }], {
+                width: 500,
+                height: 400,
+                margin: {l: 0, t: 0, r: 0, b: 0}
+            })
+            .then(function() {
+                _hover(gd, 250, 200);
+                assertHoverLabelContent({
+                    nums: '3',
+                    axis: '3 - 5'
+                });
+            })
+            .catch(fail)
+            .then(done);
+        });
+
+        it('shows the exact data when bins have single values', function(done) {
+            var gd = createGraphDiv();
+
+            Plotly.plot(gd, [{
+                // even though the data aren't regularly spaced, each bin only has
+                // one data value in it so we see exactly that value
+                x: [0, 0, 3.3, 3.3, 3.3, 7, 7],
+                xbins: {start: -0.5, end: 8.5, size: 3},
+                type: 'histogram'
+            }], {
+                width: 500,
+                height: 400,
+                margin: {l: 0, t: 0, r: 0, b: 0}
+            })
+            .then(function() {
+                _hover(gd, 250, 200);
+                assertHoverLabelContent({
+                    nums: '3',
+                    axis: '3.3'
+                });
+            })
+            .catch(fail)
+            .then(done);
+        });
+    });
+
+    describe('histogram2d hover info', function() {
+        it('shows the data range when bins have multiple values', function(done) {
+            var gd = createGraphDiv();
+
+            Plotly.plot(gd, [{
+                x: [0, 2, 3, 4, 5, 6, 7],
+                y: [1, 3, 4, 5, 6, 7, 8],
+                xbins: {start: -0.5, end: 8.5, size: 3},
+                ybins: {start: 0.5, end: 9.5, size: 3},
+                type: 'histogram2d'
+            }], {
+                width: 500,
+                height: 400,
+                margin: {l: 0, t: 0, r: 0, b: 0}
+            })
+            .then(function() {
+                _hover(gd, 250, 200);
+                assertHoverLabelContent({
+                    nums: 'x: 3 - 5\ny: 4 - 6\nz: 3'
+                });
+            })
+            .catch(fail)
+            .then(done);
+        });
+
+        it('shows the exact data when bins have single values', function(done) {
+            var gd = createGraphDiv();
+
+            Plotly.plot(gd, [{
+                x: [0, 0, 3.3, 3.3, 3.3, 7, 7],
+                y: [2, 2, 4.2, 4.2, 4.2, 8.8, 8.8],
+                xbins: {start: -0.5, end: 8.5, size: 3},
+                ybins: {start: 0.5, end: 9.5, size: 3},
+                type: 'histogram2d'
+            }], {
+                width: 500,
+                height: 400,
+                margin: {l: 0, t: 0, r: 0, b: 0}
+            })
+            .then(function() {
+                _hover(gd, 250, 200);
+                assertHoverLabelContent({
+                    nums: 'x: 3.3\ny: 4.2\nz: 3'
+                });
+            })
+            .catch(fail)
+            .then(done);
+        });
+    });
+
     describe('hoverformat', function() {
         var data = [{
                 x: [1, 2, 3],