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// Copyright 2015 Prometheus Team
// 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 config
import (
"io"
"testing"
"github.com/alecthomas/kingpin/v2"
)
var (
url *string
id *string
)
func newApp() *kingpin.Application {
url = new(string)
id = new(string)
app := kingpin.New("app", "")
app.UsageWriter(io.Discard)
app.ErrorWriter(io.Discard)
app.Terminate(nil)
app.Flag("url", "").StringVar(url)
silence := app.Command("silence", "")
silenceDel := silence.Command("del", "")
silenceDel.Flag("id", "").StringVar(id)
return app
}
func TestNewConfigResolver(t *testing.T) {
for i, tc := range []struct {
files []string
err bool
}{
{[]string{}, false},
{[]string{"testdata/amtool.good1.yml", "testdata/amtool.good2.yml"}, false},
{[]string{"testdata/amtool.good1.yml", "testdata/not_existing.yml"}, false},
{[]string{"testdata/amtool.good1.yml", "testdata/amtool.bad.yml"}, true},
} {
_, err := NewResolver(tc.files, nil)
if tc.err != (err != nil) {
if tc.err {
t.Fatalf("%d: expected error but got none", i)
} else {
t.Fatalf("%d: expected no error but got %v", i, err)
}
}
}
}
type expectFn func()
func TestConfigResolverBind(t *testing.T) {
expectURL := func(expected string) expectFn {
return func() {
if *url != expected {
t.Fatalf("expected url flag %q but got %q", expected, *url)
}
}
}
expectID := func(expected string) expectFn {
return func() {
if *id != expected {
t.Fatalf("expected ID flag %q but got %q", expected, *id)
}
}
}
for i, tc := range []struct {
files []string
legacyFlags map[string]string
args []string
err bool
expCmd string
expFns []expectFn
}{
{
[]string{"testdata/amtool.good1.yml", "testdata/amtool.good2.yml"},
nil,
[]string{},
true,
"",
[]expectFn{expectURL("url1")}, // from amtool.good1.yml
},
{
[]string{"testdata/amtool.good2.yml"},
nil,
[]string{},
true,
"",
[]expectFn{expectURL("url2")}, // from amtool.good2.yml
},
{
[]string{"testdata/amtool.good1.yml", "testdata/amtool.good2.yml"},
nil,
[]string{"--url", "url3"},
true,
"",
[]expectFn{expectURL("url3")}, // from command line
},
{
[]string{"testdata/amtool.good1.yml", "testdata/amtool.good2.yml"},
map[string]string{"old-id": "id"},
[]string{"silence", "del"},
false,
"silence del",
[]expectFn{
expectURL("url1"), // from amtool.good1.yml
expectID("id1"), // from amtool.good1.yml
},
},
{
[]string{"testdata/amtool.good2.yml"},
map[string]string{"old-id": "id"},
[]string{"silence", "del"},
false,
"silence del",
[]expectFn{
expectURL("url2"), // from amtool.good2.yml
expectID("id2"), // from amtool.good2.yml
},
},
{
[]string{"testdata/amtool.good2.yml"},
map[string]string{"old-id": "id"},
[]string{"silence", "del", "--id", "id3"},
false,
"silence del",
[]expectFn{
expectURL("url2"), // from amtool.good2.yml
expectID("id3"), // from command line
},
},
} {
r, err := NewResolver(tc.files, tc.legacyFlags)
if err != nil {
t.Fatalf("%d: expected no error but got: %v", i, err)
}
app := newApp()
err = r.Bind(app, tc.args)
if err != nil {
t.Fatalf("%d: expected Bind() to return no error but got: %v", i, err)
}
cmd, err := app.Parse(tc.args)
if tc.err != (err != nil) {
if tc.err {
t.Fatalf("%d: expected Parse() to return an error but got none", i)
} else {
t.Fatalf("%d: expected Parse() to return no error but got: %v", i, err)
}
}
if cmd != tc.expCmd {
t.Fatalf("%d: expected command %q but got %q", i, tc.expCmd, cmd)
}
for _, fn := range tc.expFns {
fn()
}
}
}