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libraries/framework/vendor/plugins/c3charts/spec/legend-spec.js

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+var describe = window.describe,
+    expect = window.expect,
+    it = window.it,
+    beforeEach = window.beforeEach;
+
+describe('c3 chart legend', function () {
+    'use strict';
+
+    var chart, d3;
+
+    var args = {
+        data: {
+            columns: [
+                ['data1', 30, 200, 100, 400, 150, 250],
+                ['data2', 50, 20, 10, 40, 15, 25]
+            ]
+        }
+    };
+
+    beforeEach(function (done) {
+        if (typeof chart === 'undefined') {
+            window.initDom();
+        }
+        chart = window.c3.generate(args);
+        d3 = chart.internal.d3;
+        chart.internal.d3.select('.jasmine_html-reporter')
+            .style('position', 'absolute')
+            .style('right', 0);
+
+        window.setTimeout(function () {
+            done();
+        }, 10);
+    });
+
+    describe('legend position', function () {
+
+        it('should be located on the center of chart', function () {
+            var box = chart.internal.legend.node().getBoundingClientRect();
+            expect(box.left + box.right).toBe(640);
+        });
+
+    });
+
+    describe('legend as inset', function () {
+
+        it('should change the legend to "inset" successfully', function () {
+            args.legend = {
+                position: 'inset',
+                inset: {
+                    step: null
+                }
+            };
+            expect(true).toBeTruthy();
+        });
+
+        it('should be positioned properly', function () {
+            var box = d3.select('.c3-legend-background').node().getBoundingClientRect();
+            expect(box.top).toBe(5.5);
+            expect(box.left).toBe(60.5);
+        });
+
+        it('should have automatically calculated height', function () {
+            var box = d3.select('.c3-legend-background').node().getBoundingClientRect();
+            expect(box.height).toBe(48);
+        });
+
+        it('should change the legend step to 1 successfully', function () {
+            args.legend.inset.step = 1;
+            expect(true).toBeTruthy();
+        });
+
+        it('should have automatically calculated height', function () {
+            var box = d3.select('.c3-legend-background').node().getBoundingClientRect();
+            expect(box.height).toBe(28);
+        });
+
+        it('should change the legend step to 2 successfully', function () {
+            args.legend.inset.step = 2;
+            expect(true).toBeTruthy();
+        });
+
+        it('should have automatically calculated height', function () {
+            var box = d3.select('.c3-legend-background').node().getBoundingClientRect();
+            expect(box.height).toBe(48);
+        });
+
+        it('should update args to have only one series', function () {
+            args = {
+                data: {
+                    columns: [
+                        ['data1', 30, 200, 100, 400, 150, 250],
+                    ]
+                },
+                legend: {
+                    position: 'inset'
+                }
+            };
+            expect(true).toBeTruthy();
+        });
+
+        it('should locate legend properly', function () {
+            var box = d3.select('.c3-legend-background').node().getBoundingClientRect();
+            expect(box.height).toBe(28);
+            expect(box.width).toBeGreaterThan(64);
+        });
+
+    });
+
+    describe('legend.hide', function () {
+
+        it('should update args', function () {
+            args = {
+                data: {
+                    columns: [
+                        ['data1', 30, 200, 100, 400, 150, 250],
+                        ['data2', 130, 100, 200, 100, 250, 150]
+                    ]
+                },
+                legend: {
+                    hide: true
+                }
+            };
+            expect(true).toBeTruthy();
+        });
+
+        it('should not show legends', function () {
+            d3.selectAll('.c3-legend-item').each(function () {
+                expect(d3.select(this).style('visibility')).toBe('hidden');
+            });
+        });
+
+        it('should update args', function () {
+            args = {
+                data: {
+                    columns: [
+                        ['data1', 30, 200, 100, 400, 150, 250],
+                        ['data2', 130, 100, 200, 100, 250, 150]
+                    ]
+                },
+                legend: {
+                    hide: 'data2'
+                }
+            };
+            expect(true).toBeTruthy();
+        });
+
+        it('should not show legends', function () {
+            expect(d3.select('.c3-legend-item-data1').style('visibility')).toBe('visible');
+            expect(d3.select('.c3-legend-item-data2').style('visibility')).toBe('hidden');
+        });
+
+    });
+
+    describe('legend.show', function () {
+
+        it('should update args', function () {
+            args = {
+                data: {
+                    columns: [
+                        ['data1', 30, 200, 100, 400, 150, 250],
+                        ['data2', 130, 100, 200, 100, 250, 150]
+                    ]
+                },
+                legend: {
+                    show: false
+                }
+            };
+            expect(true).toBeTruthy();
+        });
+
+        it('should not initially have rendered any legend items', function () {
+            expect(d3.selectAll('.c3-legend-item').empty()).toBe(true);
+        });
+
+        it('allows us to show the legend on showLegend call', function () {
+            chart.legend.show();
+            d3.selectAll('.c3-legend-item').each(function () {
+                expect(d3.select(this).style('visibility')).toBe('visible');
+                // This selects all the children, but we expect it to be empty
+                expect(d3.select(this).selectAll("*").length).not.toEqual(0);
+            });
+        });
+
+    });
+
+});