istio.io/istio@v0.0.0-20240520182934-d79c90f27776/istioctl/cmd/options_test.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 cmd
    16  
    17  import (
    18  	"bytes"
    19  	"regexp"
    20  	"testing"
    21  )
    22  
    23  // nolint: lll
    24  var expectedOutput = `The following options can be passed to any command:
    25        --log_as_json: Whether to format output as JSON or in plain console-friendly format
    26        --log_caller: Comma-separated list of scopes for which to include caller information, scopes can be any of \[.*\]
    27        --log_output_level: Comma-separated minimum per-scope logging level of messages to output, in the form of <scope>:<level>,<scope>:<level>,... where scope can be one of \[.*\] and level can be one of \[.*\]
    28        --log_stacktrace_level: Comma-separated minimum per-scope logging level at which stack traces are captured, in the form of <scope>:<level>,<scope:level>,... where scope can be one of \[.*\] and level can be one of \[.*\]
    29        --log_target: The set of paths where to output the log. This can be any path as well as the special values stdout and stderr
    30  `
    31  
    32  func TestLogHelp(t *testing.T) {
    33  	var out bytes.Buffer
    34  	rootCmd := GetRootCmd([]string{"options"})
    35  	rootCmd.SetOut(&out)
    36  	rootCmd.SetErr(&out)
    37  
    38  	fErr := rootCmd.Execute()
    39  	if fErr != nil {
    40  		t.Fatalf("options failed with %v and %q\n", fErr, out.String())
    41  	}
    42  	if !regexp.MustCompile(expectedOutput).Match(out.Bytes()) {
    43  		t.Fatalf("'istioctl options' expected output\n%s\n  got\n%s",
    44  			expectedOutput, out.String())
    45  	}
    46  }