Improved the logging of stack traces

logger.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"strings"
 	"time"
 
 	"github.com/pieterclaerhout/go-formatter"
@@ -203,11 +204,31 @@ func FormattedStackTrace(err error) string {
 		err = cause
 	}
 
-	return eris.ToCustomString(eris.Wrap(err, err.Error()), eris.NewDefaultStringFormat(eris.FormatOptions{
+	result := eris.ToCustomString(eris.Wrap(err, err.Error()), eris.NewDefaultStringFormat(eris.FormatOptions{
 		WithTrace:    true,
 		WithExternal: false,
+		InvertTrace:  true,
 	}))
 
+	resultLines := strings.Split(result, "\n")
+
+	result = ""
+	for idx, line := range resultLines {
+		if strings.Contains(line, "go-log.") {
+			continue
+		}
+		if idx == 0 {
+			result += fmt.Sprintf("%s\n", line)
+			continue
+		}
+		lineParts := strings.SplitN(line, ":", 2)
+		if len(lineParts) == 2 {
+			result += fmt.Sprintf("%-50s %s\n", lineParts[0], lineParts[1])
+		}
+	}
+
+	return strings.TrimSuffix(result, "\n")
+
 }
 
 // Fatal logs a fatal error message to stdout and exits the program with exit code 1

logger_test.go

@@ -525,6 +525,7 @@ func TestStackTrace(t *testing.T) {
 
 	assert.Equal(t, "", actualStdOut)
 	assert.True(t, strings.HasPrefix(actualStdErr, "test | ERROR | my error\n"))
+	assert.Equal(t, "test | ERROR | my error\n\tgo-log_test.TestStackTrace                        /Users/pclaerhout/Downloads/JonoFotografie/go-log/logger_test.go:521\n", actualStdErr)
 
 }
 
@@ -548,13 +549,13 @@ func Test_StackTraceCustom(t *testing.T) {
 	actualStdErr := stderr.String()
 
 	assert.Equal(t, "", actualStdOut, "stdout")
-	assert.True(t, strings.HasPrefix(actualStdErr, "test | ERROR | boom\n"), "stderr")
+	assert.Equal(t, "test | ERROR | boom\n\tgo-log_test.Test_StackTraceCustom                 /Users/pclaerhout/Downloads/JonoFotografie/go-log/logger_test.go:546\n", actualStdErr)
 
 }
 
 func TestFormattedStackTrace(t *testing.T) {
 	actual := log.FormattedStackTrace(errors.New("my error"))
-	assert.True(t, strings.HasPrefix(actual, "my error\n"))
+	assert.Equal(t, "my error\n\tgo-log_test.TestFormattedStackTrace               /Users/pclaerhout/Downloads/JonoFotografie/go-log/logger_test.go:557", actual)
 }
 
 func TestFatal(t *testing.T) {
@@ -581,7 +582,7 @@ func TestFatal(t *testing.T) {
 	actualStdErr := stderr.String()
 
 	assert.Equal(t, "", actualStdOut)
-	assert.True(t, strings.HasPrefix(actualStdErr, "test | FATAL | fatal error\n"))
+	assert.Equal(t, "test | FATAL | fatal error\n", actualStdErr)
 	assert.Equal(t, 1, got)
 
 }
@@ -610,7 +611,7 @@ func TestFatalf(t *testing.T) {
 	actualStdErr := stderr.String()
 
 	assert.Equal(t, "", actualStdOut)
-	assert.True(t, strings.HasPrefix(actualStdErr, "test | FATAL | fatal error 2\n"))
+	assert.Equal(t, "test | FATAL | fatal error 2\n", actualStdErr)
 	assert.Equal(t, 1, got)
 
 }