1 files changed, 33 insertions, 0 deletions
diff --git a/workhorse/internal/lsif_transformer/parser/cache_test.go b/workhorse/internal/lsif_transformer/parser/cache_test.go
new file mode 100644
index 00000000000..23a2ac6e9a9
--- /dev/null
+++ b/workhorse/internal/lsif_transformer/parser/cache_test.go
@@ -0,0 +1,33 @@
+package parser
+
+import (
+	"io/ioutil"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+type chunk struct {
+	A int16
+	B int16
+}
+
+func TestCache(t *testing.T) {
+	cache, err := newCache("", "test-chunks", chunk{})
+	require.NoError(t, err)
+	defer cache.Close()
+
+	c := chunk{A: 1, B: 2}
+	require.NoError(t, cache.SetEntry(1, &c))
+	require.NoError(t, cache.setOffset(0))
+
+	content, err := ioutil.ReadAll(cache.file)
+	require.NoError(t, err)
+
+	expected := []byte{0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x2, 0x0}
+	require.Equal(t, expected, content)
+
+	var nc chunk
+	require.NoError(t, cache.Entry(1, &nc))
+	require.Equal(t, c, nc)
+}