From 2232e060d0b344c42d585284c4e461681382e832 Mon Sep 17 00:00:00 2001 From: rozturac Date: Fri, 21 Jan 2022 22:22:00 +0300 Subject: [PATCH] Added an Is function to Compare Custom Errors --- .idea/.gitignore | 8 ++++ cerrors/cerror.go | 20 +++++++++ cerrors/cerror_test.go | 98 ++++++++++++++++++++++++++++++++++++++++++ go.sum | 50 +++++++++++++++++++++ 4 files changed, 176 insertions(+) create mode 100644 .idea/.gitignore create mode 100644 cerrors/cerror.go create mode 100644 cerrors/cerror_test.go create mode 100644 go.sum diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..73f69e0 --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,8 @@ +# Default ignored files +/shelf/ +/workspace.xml +# Datasource local storage ignored files +/dataSources/ +/dataSources.local.xml +# Editor-based HTTP Client requests +/httpRequests/ diff --git a/cerrors/cerror.go b/cerrors/cerror.go new file mode 100644 index 0000000..80cf156 --- /dev/null +++ b/cerrors/cerror.go @@ -0,0 +1,20 @@ +package cerrors + +import ( + "errors" + "github.com/rozturac/cerror" +) + +func Is(source, target error) bool { + cSource, cSourceOk := source.(cerror.Error) + cTarget, cTargetOk := target.(cerror.Error) + if cSourceOk && cTargetOk { + return cSource.ErrorType() == cTarget.ErrorType() && + cSource.ErrorCode() == cTarget.ErrorCode() && + cSource.Error() == cTarget.Error() + } else if !cSourceOk && !cTargetOk { + return errors.Is(source, target) + } else { + return false + } +} diff --git a/cerrors/cerror_test.go b/cerrors/cerror_test.go new file mode 100644 index 0000000..0fc5846 --- /dev/null +++ b/cerrors/cerror_test.go @@ -0,0 +1,98 @@ +package cerrors + +import ( + "errors" + "github.com/rozturac/cerror" + "testing" +) + +func TestIs_WhenSourceIsCustomErrorOnly(t *testing.T) { + sourceError := cerror.NullReferenceError("test") + targetError := errors.New("test") + want := false + + got := Is(sourceError, targetError) + + if want != got { + t.Errorf("Is(sourceError, targetError)=%v, expected: %v", got, want) + } +} + +func TestIs_WhenTargetIsCustomErrorOnly(t *testing.T) { + sourceError := errors.New("test") + targetError := cerror.NullReferenceError("test") + want := false + + got := Is(sourceError, targetError) + + if want != got { + t.Errorf("Is(sourceError, targetError)=%v, expected: %v", got, want) + } +} + +func TestIs_WhenTargetAndSourceIsCustomError(t *testing.T) { + sourceError := cerror.NullReferenceError("test") + targetError := cerror.NullReferenceError("test") + want := true + + got := Is(sourceError, targetError) + + if want != got { + t.Errorf("Is(sourceError, targetError)=%v, expected: %v", got, want) + } +} + +func TestIs_WhenTargetAndSourceIsNotCustomError(t *testing.T) { + err := errors.New("test error") + sourceError := err + targetError := err + want := true + + got := Is(sourceError, targetError) + + if want != got { + t.Errorf("Is(sourceError, targetError)=%v, expected: %v", got, want) + } +} + +func TestIs_WhenTargetAndSourceIsNil(t *testing.T) { + var ( + sourceError error = nil + targetError error = nil + want bool = true + ) + + got := Is(sourceError, targetError) + + if want != got { + t.Errorf("Is(sourceError, targetError)=%v, expected: %v", got, want) + } +} + +func TestIs_WhenSourceIsNilOnly(t *testing.T) { + var ( + sourceError error = nil + targetError error = errors.New("test") + want bool = false + ) + + got := Is(sourceError, targetError) + + if want != got { + t.Errorf("Is(sourceError, targetError)=%v, expected: %v", got, want) + } +} + +func TestIs_WhenTargetIsNilOnly(t *testing.T) { + var ( + sourceError error = errors.New("test") + targetError error = nil + want bool = false + ) + + got := Is(sourceError, targetError) + + if want != got { + t.Errorf("Is(sourceError, targetError)=%v, expected: %v", got, want) + } +} diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..fed60af --- /dev/null +++ b/go.sum @@ -0,0 +1,50 @@ +github.com/davecgh/go-spew v1.1.0 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