github.com/weaviate/weaviate@v1.24.6/entities/errors/go_wrapper_test.go (about)

     1  //                           _       _
     2  // __      _____  __ ___   ___  __ _| |_ ___
     3  // \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
     4  //  \ V  V /  __/ (_| |\ V /| | (_| | ||  __/
     5  //   \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
     6  //
     7  //  Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
     8  //
     9  //  CONTACT: hello@weaviate.io
    10  //
    11  
    12  package errors
    13  
    14  import (
    15  	"bytes"
    16  	"os"
    17  	"sync"
    18  	"testing"
    19  	"time"
    20  
    21  	"github.com/sirupsen/logrus"
    22  	"github.com/stretchr/testify/assert"
    23  )
    24  
    25  func TestGoWrapper(t *testing.T) {
    26  	cases := []struct {
    27  		env string
    28  		set bool
    29  	}{
    30  		{env: "something", set: true},
    31  		{env: "something", set: false},
    32  		{env: "", set: true},
    33  		{env: "false", set: true},
    34  		// {env: "true", set: true}, // this will NOT recover the panic, but we cannot recover on a higher level and
    35  		// there is no way to have the test succeed
    36  	}
    37  	for _, tt := range cases {
    38  		t.Run(tt.env, func(t *testing.T) {
    39  			var buf bytes.Buffer
    40  			log := logrus.New()
    41  			log.SetOutput(&buf)
    42  
    43  			if tt.set {
    44  				t.Setenv("DISABLE_RECOVERY_ON_PANIC", tt.env)
    45  			}
    46  			wg := sync.WaitGroup{}
    47  			wg.Add(1)
    48  			GoWrapper(func() {
    49  				defer wg.Done()
    50  				panic("test")
    51  			}, log)
    52  			wg.Wait()
    53  
    54  			// wait for the recover function in the wrapper to write to the log. This is done after the defer function
    55  			// in the function we pass to the wrapper has been called and we have no way to block until it is done.
    56  			// Note that this does not matter in normal operation as we do not depend on the log being written to
    57  			time.Sleep(100 * time.Millisecond)
    58  			log.SetOutput(os.Stderr)
    59  			assert.Contains(t, buf.String(), "Recovered from panic")
    60  		})
    61  	}
    62  }