Add tests for decode reading too far

1 files changed, 21 insertions, 0 deletions

diff --git a/decode_test.go b/decode_test.go
new file mode 100644
index 0000000..8220e39
--- /dev/null
+++ b/decode_test.go
@@ -0,0 +1,21 @@
+// Copyright (C) 2022  Luke Shumaker <lukeshu@lukeshu.com>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package lowmemjson
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDecodeNumber(t *testing.T) {
+	r := strings.NewReader(`1{}`)
+
+	var num int
+	assert.NoError(t, Decode(r, &num))
+	assert.Equal(t, 1, num)
+	assert.Equal(t, 2, r.Len()) // check that it didn't read too far
+}