Fix legend spec

c3.js

@@ -3091,7 +3091,7 @@
                          .style("fill-opacity", opacityForText));
     };
     c3_chart_internal_fn.getTextRect = function (text, cls) {
-        var svg = this.d3.select('body').append("svg").style('visibility', 'hidden'), rect;
+        var svg = this.d3.select('body').attr('class', 'c3').append("svg").style('visibility', 'hidden'), rect;
         svg.selectAll('.dummy')
             .data([text])
           .enter().append('text')

spec/legend-spec.js

@@ -23,7 +23,9 @@ describe('c3 chart legend', function () {
         }
         chart = window.c3.generate(args);
         d3 = chart.internal.d3;
-        chart.internal.d3.select('.jasmine_html-reporter').style('display', 'none');
+        chart.internal.d3.select('.jasmine_html-reporter')
+            .style('position', 'absolute')
+            .style('right', 0);
 
         window.setTimeout(function () {
             done();
@@ -34,7 +36,7 @@ describe('c3 chart legend', function () {
 
         it('should be located on the center of chart', function () {
             var box = chart.internal.legend.node().getBoundingClientRect();
-            expect(box.left + box.right).toBe(645);
+            expect(box.left + box.right).toBe(640);
         });
 
     });

src/text.js

@@ -48,7 +48,7 @@ c3_chart_internal_fn.addTransitionForText = function (transitions, xForText, yFo
                      .style("fill-opacity", opacityForText));
 };
 c3_chart_internal_fn.getTextRect = function (text, cls) {
-    var svg = this.d3.select('body').append("svg").style('visibility', 'hidden'), rect;
+    var svg = this.d3.select('body').attr('class', 'c3').append("svg").style('visibility', 'hidden'), rect;
     svg.selectAll('.dummy')
         .data([text])
       .enter().append('text')