mirror of
https://github.com/prometheus/prometheus.git
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59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
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// Copyright 2020 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package config
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import (
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"fmt"
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"reflect"
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"strings"
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"testing"
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"github.com/prometheus/prometheus/util/testutil"
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"gopkg.in/yaml.v2"
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)
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func TestForNilSDConfig(t *testing.T) {
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// Get all the yaml fields names of the ServiceDiscoveryConfig struct.
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s := reflect.ValueOf(ServiceDiscoveryConfig{})
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configType := s.Type()
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n := s.NumField()
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fieldsSlice := make([]string, n)
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for i := 0; i < n; i++ {
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field := configType.Field(i)
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tag := field.Tag.Get("yaml")
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tag = strings.Split(tag, ",")[0]
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fieldsSlice = append(fieldsSlice, tag)
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}
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// Unmarshall all possible yaml keys and validate errors check upon nil
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// SD config.
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for _, f := range fieldsSlice {
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if f == "" {
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continue
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}
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t.Run(f, func(t *testing.T) {
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c := &ServiceDiscoveryConfig{}
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err := yaml.Unmarshal([]byte(fmt.Sprintf(`
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---
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%s:
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-
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`, f)), c)
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testutil.Ok(t, err)
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err = c.Validate()
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testutil.NotOk(t, err)
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testutil.Equals(t, fmt.Sprintf("empty or null section in %s", f), err.Error())
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})
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}
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}
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