Write a basic test suite

document/encoding/encodingtest/testing.go

@@ -0,0 +1,19 @@
+// Package encodingtest provides a test suite for testing codec implementations.
+package encodingtest
+
+import (
+	"testing"
+
+	"github.com/genjidb/genji/document"
+	"github.com/genjidb/genji/document/encoding"
+	"github.com/stretchr/testify/require"
+)
+
+// TestCodec runs a list of tests on the given codec.
+func TestCodec(t *testing.T, codecBuilder func() encoding.Codec) {
+	t.Run("Encoding using a nil reader should fail", func(t *testing.T) {
+		codec := codecBuilder()
+		err := codec.NewEncoder(nil).EncodeDocument(document.NewFieldBuffer().Add("a", document.NewBoolValue(true)))
+		require.Error(t, err)
+	})
+}