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package gitdiff
import (
"errors"
"strings"
"testing"
)
func assertError(t *testing.T, expected interface{}, actual error, action string) {
if actual == nil {
t.Fatalf("expected error %s, but got nil", action)
}
switch exp := expected.(type) {
case bool:
if !exp {
t.Fatalf("unexpected error %s: %v", action, actual)
}
case string:
if !strings.Contains(actual.Error(), exp) {
t.Fatalf("incorrect error %s: %q does not contain %q", action, actual.Error(), exp)
}
case error:
if !errors.Is(actual, exp) {
t.Fatalf("incorrect error %s: expected %T (%v), actual: %T (%v)", action, exp, exp, actual, actual)
}
default:
t.Fatalf("unsupported expected error type: %T", exp)
}
}
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