first commit

LICENSE

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+MIT License
+
+Copyright (c) 2023 Nils Stinnesbeck
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# errorhandler
+
+This is a simple tool to format errormessages

go.mod

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+module git.stinnesbeck.com/nils/errorhandler
+
+go 1.20

main.go

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+package errorhandler
+
+import "fmt"
+
+// FormatError formats text and the error in a standardized way
+func FormatError(text string, err error) error {
+	return fmt.Errorf(fmt.Sprintf("%s, error is:\n\t-> %s", text, err))
+}

main_test.go

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+package errorhandler
+
+import (
+	"errors"
+	"fmt"
+	"testing"
+)
+
+func TestCheck(t *testing.T) {
+	text := "text before error"
+	err := "test error"
+
+	expected := fmt.Errorf("%s, error is:\n\t-> %s", text, err)
+	result := FormatError(text, errors.New(err))
+	fmt.Println(result, expected)
+
+	if result.Error() != expected.Error() {
+		t.Fatalf("expected (%s) is different from result (%s)", expected.Error(), result.Error())
+	}
+}