/
name.go
62 lines (53 loc) · 1.77 KB
/
name.go
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// Copyright 2022 Google LLC
//
// 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 nomostest
import (
"crypto/sha1"
"encoding/hex"
"fmt"
"strings"
"github.com/ettle/strcase"
"k8s.io/apimachinery/pkg/util/validation"
"kpt.dev/configsync/e2e/nomostest/testing"
)
// TestClusterName returns the name of the test cluster.
func TestClusterName(t testing.NTB) string {
t.Helper()
// Kind seems to allow a max cluster name length of 49. If we exceed that, hash the
// name, truncate to 40 chars then append 8 hash digits (32 bits).
const nameLimit = 49
const hashChars = 8
n := testDirName(t)
// handle legacy testcase filenames
n = strings.ReplaceAll(n, "_", "-")
if nameLimit < len(n) {
hashBytes := sha1.Sum([]byte(n))
hashStr := hex.EncodeToString(hashBytes[:])
n = fmt.Sprintf("%s-%s", n[:nameLimit-1-hashChars], hashStr[:hashChars])
}
if errs := validation.IsDNS1123Subdomain(n); len(errs) > 0 {
t.Fatalf("transformed test name %q into %q, which is not a valid Kind cluster name: %+v",
t.Name(), n, errs)
}
return n
}
func testDirName(t testing.NTB) string {
t.Helper()
n := t.Name()
// Capital letters are forbidden in Kind cluster names
n = strcase.ToKebab(n)
// Slashes are forbidden in file paths.
n = strings.ReplaceAll(n, "/", "--")
return n
}