grafana/pkg/tsdb/cloudwatch/routes/dimension_values_test.go
2023-05-24 10:19:34 +02:00

54 lines
2.9 KiB
Go

package routes
import (
"context"
"fmt"
"net/http"
"net/http/httptest"
"testing"
"github.com/grafana/grafana-plugin-sdk-go/backend"
"github.com/grafana/grafana/pkg/tsdb/cloudwatch/models/resources"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
"github.com/grafana/grafana/pkg/tsdb/cloudwatch/mocks"
"github.com/grafana/grafana/pkg/tsdb/cloudwatch/models"
)
func Test_DimensionValues_Route(t *testing.T) {
t.Run("Calls GetDimensionValuesByDimensionFilter when a valid request is passed", func(t *testing.T) {
mockListMetricsService := mocks.ListMetricsServiceMock{}
mockListMetricsService.On("GetDimensionValuesByDimensionFilter", mock.MatchedBy(func(r resources.DimensionValuesRequest) bool {
return r.ResourceRequest != nil && *r.ResourceRequest == resources.ResourceRequest{Region: "us-east-2"} &&
r.Namespace == "AWS/EC2" &&
r.MetricName == "CPUUtilization" &&
r.DimensionKey == "instanceId" &&
len(r.DimensionFilter) == 2 &&
assert.Contains(t, r.DimensionFilter, &resources.Dimension{Name: "NodeID", Value: "Shared"}) &&
assert.Contains(t, r.DimensionFilter, &resources.Dimension{Name: "stage", Value: "QueryCommit"})
})).Return([]resources.ResourceResponse[string]{}, nil).Once()
newListMetricsService = func(_ context.Context, pluginCtx backend.PluginContext, reqCtxFactory models.RequestContextFactoryFunc, region string) (models.ListMetricsProvider, error) {
return &mockListMetricsService, nil
}
rr := httptest.NewRecorder()
req := httptest.NewRequest("GET", `/dimension-values?region=us-east-2&dimensionKey=instanceId&namespace=AWS/EC2&metricName=CPUUtilization&dimensionFilters={"NodeID":["Shared"],"stage":["QueryCommit"]}`, nil)
handler := http.HandlerFunc(ResourceRequestMiddleware(DimensionValuesHandler, logger, nil))
handler.ServeHTTP(rr, req)
})
t.Run("returns 500 if GetDimensionValuesByDimensionFilter returns an error", func(t *testing.T) {
mockListMetricsService := mocks.ListMetricsServiceMock{}
mockListMetricsService.On("GetDimensionValuesByDimensionFilter", mock.Anything).Return([]resources.ResourceResponse[string]{}, fmt.Errorf("some error"))
newListMetricsService = func(_ context.Context, pluginCtx backend.PluginContext, reqCtxFactory models.RequestContextFactoryFunc, region string) (models.ListMetricsProvider, error) {
return &mockListMetricsService, nil
}
rr := httptest.NewRecorder()
req := httptest.NewRequest("GET", `/dimension-values?region=us-east-2&dimensionKey=instanceId&namespace=AWS/EC2&metricName=CPUUtilization&dimensionFilters={"NodeID":["Shared"],"stage":["QueryCommit"]}`, nil)
handler := http.HandlerFunc(ResourceRequestMiddleware(DimensionValuesHandler, logger, nil))
handler.ServeHTTP(rr, req)
assert.Equal(t, http.StatusInternalServerError, rr.Code)
assert.Equal(t, `{"Message":"error in DimensionValuesHandler: some error","Error":"some error","StatusCode":500}`, rr.Body.String())
})
}