Make test "should rotate labels to avoid overlap" more lenient for float and update expected angle

Author: my-tien

test/jasmine/tests/axes_test.js

@@ -4902,7 +4902,7 @@ describe('Test axes', function() {
                     var t = d3Select(this).attr('transform');
                     var rotate = (t.split('rotate(')[1] || '').split(')')[0];
                     var angle = rotate.split(',')[0];
-                    expect(Number(angle)).toBe(exp.angle[i], msg + ' - node ' + i);
+                    expect(Number(angle)).toBeCloseTo(exp.angle[i], msg + ' - node ' + i);
                 });
             }
 
@@ -4920,7 +4920,7 @@ describe('Test axes', function() {
             })
             .then(function() {
                 _assert('base - rotated', {
-                    angle: [90, 90, 90]
+                    angle: [30, 30, 30]
                 });
 
                 return Plotly.relayout(gd, 'xaxis.range', [-0.4, 1.4]);