1 files changed, 81 insertions, 0 deletions
diff --git a/src/pybind/mgr/dashboard/frontend/src/app/ceph/cephfs/cephfs-chart/cephfs-chart.component.spec.ts b/src/pybind/mgr/dashboard/frontend/src/app/ceph/cephfs/cephfs-chart/cephfs-chart.component.spec.ts
new file mode 100644
index 000000000..4ba20fa89
--- /dev/null
+++ b/src/pybind/mgr/dashboard/frontend/src/app/ceph/cephfs/cephfs-chart/cephfs-chart.component.spec.ts
@@ -0,0 +1,81 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { ChartsModule } from 'ng2-charts';
+
+import { configureTestBed } from '~/testing/unit-test-helper';
+import { CephfsChartComponent } from './cephfs-chart.component';
+
+describe('CephfsChartComponent', () => {
+  let component: CephfsChartComponent;
+  let fixture: ComponentFixture<CephfsChartComponent>;
+
+  const counter = [
+    [0, 15],
+    [5, 15],
+    [10, 25],
+    [15, 50]
+  ];
+
+  configureTestBed({
+    imports: [ChartsModule],
+    declarations: [CephfsChartComponent]
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(CephfsChartComponent);
+    component = fixture.componentInstance;
+    component.mdsCounter = {
+      'mds_server.handle_client_request': counter,
+      'mds_mem.ino': counter,
+      name: 'a'
+    };
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('completed the chart', () => {
+    const lhs = component.chart.datasets[0].data;
+    expect(lhs.length).toBe(3);
+    expect(lhs).toEqual([
+      {
+        x: 5000,
+        y: 15
+      },
+      {
+        x: 10000,
+        y: 25
+      },
+      {
+        x: 15000,
+        y: 50
+      }
+    ]);
+
+    const rhs = component.chart.datasets[1].data;
+    expect(rhs.length).toBe(3);
+    expect(rhs).toEqual([
+      {
+        x: 5000,
+        y: 0
+      },
+      {
+        x: 10000,
+        y: 10
+      },
+      {
+        x: 15000,
+        y: 25
+      }
+    ]);
+  });
+
+  it('should force angular to update the chart datasets array in order to update the graph', () => {
+    const oldDatasets = component.chart.datasets;
+    component.ngOnChanges();
+    expect(oldDatasets).toEqual(component.chart.datasets);
+    expect(oldDatasets).not.toBe(component.chart.datasets);
+  });
+});