node_exporter/collector/helper_test.go

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// Copyright 2020 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package collector
import (
"testing"
)
func TestBytesToString(t *testing.T) {
tests := []struct {
name string
b []byte
expected string
}{
{
"Single null byte",
[]byte{0},
"",
},
{
"Empty byte array",
[]byte{},
"",
},
{
"Not null terminated",
[]byte{65, 66, 67},
"ABC",
},
{
"Null randomly in array",
[]byte{65, 66, 67, 0, 65, 0, 65},
"ABC",
},
{
"Array starts with null and contains other valid bytes",
[]byte{0, 65, 66, 67, 0},
"",
},
}
for _, tt := range tests {
name := tt.name
b := tt.b
result := bytesToString(b)
expected := tt.expected
if result != expected {
t.Errorf("bytesToString(%#v): Name: %s, expected %#v, got %#v)", b, name, expected, result)
}
}
}
func TestSanitizeMetricName(t *testing.T) {
testcases := map[string]string{
"": "",
"rx_errors": "rx_errors",
"Queue[0] AllocFails": "Queue_0_AllocFails",
"Tx LPI entry count": "Tx_LPI_entry_count",
"port.VF_admin_queue_requests": "port_VF_admin_queue_requests",
"[3]: tx_bytes": "_3_tx_bytes",
" err": "_err",
}
for metricName, expected := range testcases {
got := SanitizeMetricName(metricName)
if expected != got {
t.Errorf("Expected '%s' but got '%s'", expected, got)
}
}
}