errs pkg for error code based errors

errs/errors_test.go

@@ -0,0 +1,46 @@
+package errs
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/logger"
+)
+
+func testErrors() *Errors {
+	return &Errors{
+		Package: "TEST",
+		Errors: map[int]string{
+			0: "zero",
+			1: "one",
+		},
+		Level: func(i int) (l logger.LogLevel) {
+			if i == 0 {
+				l = logger.ErrorLevel
+			} else {
+				l = logger.WarnLevel
+			}
+			return
+		},
+	}
+}
+
+func TestErrorMessage(t *testing.T) {
+	err := testErrors().New(0, "zero detail %v", "available")
+	message := fmt.Sprintf("%v", err)
+	exp := "[TEST] zero: zero detail available"
+	if message != exp {
+		t.Errorf("error message incorrect. expected %v, got %v", exp, message)
+	}
+}
+
+func TestErrorSeverity(t *testing.T) {
+	err0 := testErrors().New(0, "zero detail")
+	if !err0.Fatal() {
+		t.Errorf("error should be fatal")
+	}
+	err1 := testErrors().New(1, "one detail")
+	if err1.Fatal() {
+		t.Errorf("error should not be fatal")
+	}
+}