mirror of
https://github.com/prometheus-community/windows_exporter.git
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62 lines
2.0 KiB
Go
62 lines
2.0 KiB
Go
// SPDX-License-Identifier: Apache-2.0
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//
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// Copyright 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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//go:build windows
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package dhcp
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import (
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"errors"
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"log/slog"
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"testing"
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"github.com/stretchr/testify/require"
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)
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// TestBuildWithoutDHCPServerAPI checks that a missing DHCP server API only
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// disables the scope metrics, unless they are the only sub-collector.
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//
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//nolint:paralleltest // replaces loadDHCPServerAPI.
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func TestBuildWithoutDHCPServerAPI(t *testing.T) {
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original := loadDHCPServerAPI
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t.Cleanup(func() { loadDHCPServerAPI = original })
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loadDHCPServerAPI = func() error { return errors.ErrUnsupported }
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t.Run("server and scope metrics", func(t *testing.T) {
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enabled := []string{subCollectorServerMetrics, subCollectorScopeMetrics}
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c := New(&Config{CollectorsEnabled: enabled})
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// The DHCP Server counters may be missing on this host; only the
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// scope metrics decision is checked.
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_ = c.Build(slog.New(slog.DiscardHandler), nil)
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t.Cleanup(func() { _ = c.Close() })
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require.Equal(t, []string{subCollectorServerMetrics}, c.config.CollectorsEnabled)
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require.Equal(t, []string{subCollectorServerMetrics, subCollectorScopeMetrics}, enabled, "the caller's slice must not change")
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require.Nil(t, c.scopeInfo)
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})
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t.Run("scope metrics only", func(t *testing.T) {
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c := New(&Config{CollectorsEnabled: []string{subCollectorScopeMetrics}})
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err := c.Build(slog.New(slog.DiscardHandler), nil)
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require.ErrorIs(t, err, errors.ErrUnsupported)
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})
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}
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