mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2025-03-27 21:39:07 +02:00
58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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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 label_test
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import (
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"testing"
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"go.opentelemetry.io/otel/api/kv"
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"github.com/stretchr/testify/require"
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"go.opentelemetry.io/otel/api/label"
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)
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func TestIterator(t *testing.T) {
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one := kv.String("one", "1")
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two := kv.Int("two", 2)
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lbl := label.NewSet(one, two)
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iter := lbl.Iter()
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require.Equal(t, 2, iter.Len())
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require.True(t, iter.Next())
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require.Equal(t, one, iter.Label())
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idx, attr := iter.IndexedLabel()
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require.Equal(t, 0, idx)
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require.Equal(t, one, attr)
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require.Equal(t, 2, iter.Len())
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require.True(t, iter.Next())
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require.Equal(t, two, iter.Label())
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idx, attr = iter.IndexedLabel()
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require.Equal(t, 1, idx)
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require.Equal(t, two, attr)
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require.Equal(t, 2, iter.Len())
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require.False(t, iter.Next())
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require.Equal(t, 2, iter.Len())
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}
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func TestEmptyIterator(t *testing.T) {
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lbl := label.NewSet()
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iter := lbl.Iter()
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require.Equal(t, 0, iter.Len())
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require.False(t, iter.Next())
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}
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