Implement AssetStore interface

1 files changed, 67 insertions, 0 deletions

diff --git a/srv/src/post/asset_test.go b/srv/src/post/asset_test.go
new file mode 100644
index 0000000..4b88000
--- /dev/null
+++ b/srv/src/post/asset_test.go
@@ -0,0 +1,67 @@
+package post
+
+import (
+	"bytes"
+	"io"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+type assetTestHarness struct {
+	store AssetStore
+}
+
+func newAssetTestHarness(t *testing.T) assetTestHarness {
+
+	db := NewInMemSQLDB()
+	t.Cleanup(func() { db.Close() })
+
+	store := NewAssetStore(db)
+
+	return assetTestHarness{
+		store: store,
+	}
+}
+
+func (h *assetTestHarness) assertGet(t *testing.T, exp, id string) {
+	t.Helper()
+	buf := new(bytes.Buffer)
+	err := h.store.Get(id, buf)
+	assert.NoError(t, err)
+	assert.Equal(t, exp, buf.String())
+}
+
+func (h *assetTestHarness) assertNotFound(t *testing.T, id string) {
+	t.Helper()
+	err := h.store.Get(id, io.Discard)
+	assert.ErrorIs(t, ErrAssetNotFound, err)
+}
+
+func TestAssetStore(t *testing.T) {
+
+	h := newAssetTestHarness(t)
+
+	h.assertNotFound(t, "foo")
+	h.assertNotFound(t, "bar")
+
+	err := h.store.Set("foo", bytes.NewBufferString("FOO"))
+	assert.NoError(t, err)
+
+	h.assertGet(t, "FOO", "foo")
+	h.assertNotFound(t, "bar")
+
+	err = h.store.Set("foo", bytes.NewBufferString("FOOFOO"))
+	assert.NoError(t, err)
+
+	h.assertGet(t, "FOOFOO", "foo")
+	h.assertNotFound(t, "bar")
+
+	assert.NoError(t, h.store.Delete("foo"))
+	h.assertNotFound(t, "foo")
+	h.assertNotFound(t, "bar")
+
+	assert.NoError(t, h.store.Delete("bar"))
+	h.assertNotFound(t, "foo")
+	h.assertNotFound(t, "bar")
+}