istio.io/istio@v0.0.0-20240520182934-d79c90f27776/pkg/test/util/tmpl/execute.go (about)

     1  // Copyright Istio Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package tmpl
    16  
    17  import (
    18  	"bytes"
    19  	"text/template"
    20  
    21  	"istio.io/istio/pkg/test"
    22  )
    23  
    24  // Execute the template with the given parameters.
    25  func Execute(t *template.Template, data any) (string, error) {
    26  	var b bytes.Buffer
    27  	if err := t.Execute(&b, data); err != nil {
    28  		return "", err
    29  	}
    30  
    31  	return b.String(), nil
    32  }
    33  
    34  // ExecuteOrFail calls Execute and fails the test if it returns an error.
    35  func ExecuteOrFail(t test.Failer, t2 *template.Template, data any) string {
    36  	t.Helper()
    37  	s, err := Execute(t2, data)
    38  	if err != nil {
    39  		t.Fatal(err)
    40  	}
    41  	return s
    42  }