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package main
import (
"reflect"
"testing"
"time"
"github.com/prometheus/exporter-toolkit/web/kingpinflag"
"gopkg.in/alecthomas/kingpin.v2"
)
func TestParsePositiveDuration(t *testing.T) {
t.Parallel()
tests := []struct {
name string
testInput string
want positiveDuration
wantErr bool
}{
{
"ParsePositiveDuration returns a positiveDuration",
"15ms",
positiveDuration{15 * time.Millisecond},
false,
},
{
"ParsePositiveDuration returns error for trying to parse negative value",
"-15ms",
positiveDuration{},
true,
},
{
"ParsePositiveDuration returns error for trying to parse empty string",
"",
positiveDuration{},
true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
got, err := parsePositiveDuration(tt.testInput)
if (err != nil) != tt.wantErr {
t.Errorf("parsePositiveDuration() error = %v, wantErr %v", err, tt.wantErr)
return
}
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("parsePositiveDuration() = %v, want %v", got, tt.want)
}
})
}
}
func TestParseUnixSocketAddress(t *testing.T) {
t.Parallel()
tests := []struct {
name string
testInput string
wantSocketPath string
wantRequestPath string
wantErr bool
}{
{
"Normal unix socket address",
"unix:/path/to/socket",
"/path/to/socket",
"",
false,
},
{
"Normal unix socket address with location",
"unix:/path/to/socket:/with/location",
"/path/to/socket",
"/with/location",
false,
},
{
"Unix socket address with trailing ",
"unix:/trailing/path:",
"/trailing/path",
"",
false,
},
{
"Unix socket address with too many colons",
"unix:/too:/many:colons:",
"",
"",
true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
socketPath, requestPath, err := parseUnixSocketAddress(tt.testInput)
if (err != nil) != tt.wantErr {
t.Errorf("parseUnixSocketAddress() error = %v, wantErr %v", err, tt.wantErr)
return
}
if !reflect.DeepEqual(socketPath, tt.wantSocketPath) {
t.Errorf("socket path: parseUnixSocketAddress() = %v, want %v", socketPath, tt.wantSocketPath)
}
if !reflect.DeepEqual(requestPath, tt.wantRequestPath) {
t.Errorf("request path: parseUnixSocketAddress() = %v, want %v", requestPath, tt.wantRequestPath)
}
})
}
}
func TestAddMissingEnvironmentFlags(t *testing.T) {
t.Parallel()
expectedMatches := map[string]string{
"non-matching-flag": "",
"web.missing-env": "MISSING_ENV",
"web.has-env": "HAS_ENV_ALREADY",
"web.listen-address": "LISTEN_ADDRESS",
"web.config.file": "CONFIG_FILE",
}
kingpinflag.AddFlags(kingpin.CommandLine, ":9113")
kingpin.Flag("non-matching-flag", "").String()
kingpin.Flag("web.missing-env", "").String()
kingpin.Flag("web.has-env", "").Envar("HAS_ENV_ALREADY").String()
addMissingEnvironmentFlags(kingpin.CommandLine)
// using Envar() on a flag returned from GetFlag()
// adds an additional flag, which is processed correctly
// at runtime but means that we need to check for a match
// instead of checking the envar of each matching flag name
for k, v := range expectedMatches {
matched := false
for _, f := range kingpin.CommandLine.Model().Flags {
if f.Name == k && f.Envar == v {
matched = true
}
}
if !matched {
t.Errorf("missing %s envar for %s", v, k)
}
}
}
func TestConvertFlagToEnvar(t *testing.T) {
t.Parallel()
cases := []struct {
input string
output string
}{
{
input: "dot.separate",
output: "DOT_SEPARATE",
},
{
input: "underscore_separate",
output: "UNDERSCORE_SEPARATE",
},
{
input: "mixed_separate_options",
output: "MIXED_SEPARATE_OPTIONS",
},
}
for _, c := range cases {
res := convertFlagToEnvar(c.input)
if res != c.output {
t.Errorf("expected %s to resolve to %s but got %s", c.input, c.output, res)
}
}
}
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