1 files changed, 34 insertions, 0 deletions
diff --git a/rrdformat/errors_binary_test.go b/rrdformat/errors_binary_test.go
new file mode 100644
index 0000000..f420a1b
--- /dev/null
+++ b/rrdformat/errors_binary_test.go
@@ -0,0 +1,34 @@
+package rrdformat
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBinaryError(t *testing.T) {
+	assert := assert.New(t)
+
+	bad404 := []byte(`<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"`)
+	err := newBinError("not an RRD file: wrong magic number", bad404, 0, 4)
+	assert.Equal(err.Error(), `invalid RRD: not an RRD file: wrong magic number`)
+	assert.Equal(fmt.Sprintf("%v", err), `invalid RRD: not an RRD file: wrong magic number`)
+	assert.Equal(fmt.Sprintf("%q", err), `"invalid RRD: not an RRD file: wrong magic number"`)
+	assert.Equal(fmt.Sprintf("%+v", err), `invalid RRD: not an RRD file: wrong magic number
+	at byte 0:
+		ascii:  <  !  D  O
+		hex  : 3c 21 44 4f
+`)
+
+	badShort := []byte{'R'}
+	err = newBinError("not an RRD file: wrong magic number", badShort, 0, 4)
+	assert.Equal(err.Error(), `invalid RRD: not an RRD file: wrong magic number`)
+	assert.Equal(fmt.Sprintf("%v", err), `invalid RRD: not an RRD file: wrong magic number`)
+	assert.Equal(fmt.Sprintf("%q", err), `"invalid RRD: not an RRD file: wrong magic number"`)
+	assert.Equal(fmt.Sprintf("%+v", err), `invalid RRD: not an RRD file: wrong magic number
+	at byte 0:
+		ascii:  R <EOF>
+		hex  : 52 <EOF>
+`)
+}