k9s/internal/resource/cluster_test.go

102 lines
2.8 KiB
Go

package resource_test
import (
"fmt"
"testing"
"github.com/derailed/k9s/internal/k8s"
"github.com/derailed/k9s/internal/resource"
m "github.com/petergtz/pegomock"
"github.com/stretchr/testify/assert"
v1 "k8s.io/api/core/v1"
mv1beta1 "k8s.io/metrics/pkg/apis/metrics/v1beta1"
)
func TestClusterVersion(t *testing.T) {
mm, mx := NewMockClusterMeta(), NewMockMetricsServer()
m.When(mm.Version()).ThenReturn("1.2.3", nil)
ci := resource.NewClusterWithArgs(mm, mx)
assert.Equal(t, "1.2.3", ci.Version())
}
func TestClusterNoVersion(t *testing.T) {
mm, mx := NewMockClusterMeta(), NewMockMetricsServer()
m.When(mm.Version()).ThenReturn("bad", fmt.Errorf("No data"))
ci := resource.NewClusterWithArgs(mm, mx)
assert.Equal(t, "n/a", ci.Version())
}
func TestClusterName(t *testing.T) {
mm, mx := NewMockClusterMeta(), NewMockMetricsServer()
m.When(mm.ClusterName()).ThenReturn("fred")
ci := resource.NewClusterWithArgs(mm, mx)
assert.Equal(t, "fred", ci.ClusterName())
}
func TestContextName(t *testing.T) {
mm, mx := NewMockClusterMeta(), NewMockMetricsServer()
m.When(mm.ContextName()).ThenReturn("fred")
ci := resource.NewClusterWithArgs(mm, mx)
assert.Equal(t, "fred", ci.ContextName())
}
func TestUserName(t *testing.T) {
mm, mx := NewMockClusterMeta(), NewMockMetricsServer()
m.When(mm.UserName()).ThenReturn("fred")
ci := resource.NewClusterWithArgs(mm, mx)
assert.Equal(t, "fred", ci.UserName())
}
func TestClusterMetrics(t *testing.T) {
mm, mx := NewMockClusterMeta(), NewMockMetricsServer()
m.When(mx.ClusterLoad([]v1.Node{}, []mv1beta1.NodeMetrics{})).ThenReturn(clusterMetric())
c := resource.NewClusterWithArgs(mm, mx)
assert.Equal(t, clusterMetric(), c.Metrics([]v1.Node{}, []mv1beta1.NodeMetrics{}))
}
func TestClusterGetNodes(t *testing.T) {
mm, mx := NewMockClusterMeta(), NewMockMetricsServer()
m.When(mm.GetNodes()).ThenReturn([]v1.Node{*k8sNode()}, nil)
m.When(mx.ClusterLoad([]v1.Node{}, []mv1beta1.NodeMetrics{})).ThenReturn(clusterMetric())
c := resource.NewClusterWithArgs(mm, mx)
nodes, err := c.GetNodes()
assert.Nil(t, err)
assert.Equal(t, 1, len(nodes))
}
func TestClusterFetchNodesMetrics(t *testing.T) {
mm, mx := NewMockClusterMeta(), NewMockMetricsServer()
m.When(mm.GetNodes()).ThenReturn([]v1.Node{*k8sNode()}, nil)
m.When(mx.FetchNodesMetrics()).ThenReturn([]mv1beta1.NodeMetrics{makeMxNode("fred", "100m", "10Mi")}, nil)
c := resource.NewClusterWithArgs(mm, mx)
metrics, err := c.FetchNodesMetrics()
assert.Nil(t, err)
assert.Equal(t, 1, len(metrics))
}
// Helpers...
func TestUsingMocks(t *testing.T) {
m.RegisterMockTestingT(t)
m.RegisterMockFailHandler(func(m string, i ...int) {
fmt.Println("Boom!", m, i)
})
}
func clusterMetric() k8s.ClusterMetrics {
return k8s.ClusterMetrics{
PercCPU: 100,
PercMEM: 1000,
}
}