github.com/hasnat/dolt/go@v0.0.0-20210628190320-9eb5d843fbb7/libraries/utils/pantoerr/panic_utils_test.go (about)

     1  // Copyright 2019 Dolthub, Inc.
     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 pantoerr
    16  
    17  import (
    18  	"errors"
    19  	"testing"
    20  )
    21  
    22  func TestPanicToError(t *testing.T) {
    23  	errMsg := "error message"
    24  	panicMsg := "panic message"
    25  	err := PanicToError(errMsg, func() error {
    26  		panic(panicMsg)
    27  	})
    28  
    29  	if err == nil {
    30  		t.Fatal("Should have an error from the panic")
    31  	} else if actualErrMsg := err.Error(); actualErrMsg != errMsg {
    32  		t.Error("Unexpected error message:", actualErrMsg, "does not match expected", errMsg)
    33  	} else if IsRecoveredPanic(err) {
    34  		if GetRecoveredPanicCause(err) != panicMsg {
    35  			t.Error("Unexpected Panic Cause")
    36  		}
    37  	} else {
    38  		t.Error("Recovered panic not of the correct type.")
    39  	}
    40  
    41  	errMsg2 := "other error message"
    42  	err = PanicToError(errMsg, func() error {
    43  		return errors.New(errMsg2)
    44  	})
    45  
    46  	if err == nil {
    47  		t.Fatal("Should have the error that was returned.")
    48  	} else if err.Error() != errMsg2 {
    49  		t.Error("Unexpected error message")
    50  	}
    51  }
    52  
    53  func TestPanicToErrorNil(t *testing.T) {
    54  	errMsg := "error message"
    55  	panicMsg := "panic message"
    56  	err := PanicToErrorNil(errMsg, func() {
    57  		panic(panicMsg)
    58  	})
    59  
    60  	if err == nil {
    61  		t.Fatal("Should have an error from the panic")
    62  	} else if actualErrMsg := err.Error(); actualErrMsg != errMsg {
    63  		t.Error("Unexpected error message:", actualErrMsg, "does not match expected", errMsg)
    64  	} else if IsRecoveredPanic(err) {
    65  		if GetRecoveredPanicCause(err) != panicMsg {
    66  			t.Error("Unexpected Panic Cause")
    67  		}
    68  	} else {
    69  		t.Error("Recovered panic not of the correct type.")
    70  	}
    71  
    72  	err = PanicToErrorNil(errMsg, func() {
    73  		var i int = 0
    74  		i++
    75  	})
    76  
    77  	if err != nil {
    78  		t.Error("Unexpected error message")
    79  	}
    80  }
    81  
    82  func TestPanicToErrorInstance(t *testing.T) {
    83  	expected := errors.New("err instance")
    84  	actual := PanicToErrorInstance(expected, func() error {
    85  		panic("panic to err instance")
    86  	})
    87  
    88  	if actual != expected {
    89  		t.Fatal("Did not receive expected instance")
    90  	}
    91  }