wip: add cache tests

Signed-off-by: Brian McGee <[email protected]>

cache/cache_test.go

@@ -0,0 +1,41 @@
+package cache
+
+import (
+	"github.com/adrg/xdg"
+	"github.com/stretchr/testify/assert"
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestCache_Open(t *testing.T) {
+	as := assert.New(t)
+
+	tempDir := t.TempDir()
+	xdgPrefix, err := xdg.CacheFile("")
+
+	// normal open
+	cache, err := Open(tempDir, false)
+	path := cache.db.Path()
+
+	as.NoError(err)
+	as.True(
+		strings.HasPrefix(path, xdgPrefix),
+		"db path %s does not contain the xdg cache file prefix %s",
+		path, xdgPrefix,
+	)
+
+	// normal close
+	as.NoError(cache.Close())
+	_, err = os.Stat(path)
+	as.NoError(err, "db path %s should still exist after closing the cache", path)
+
+	// open a temporary cache e.g. --no-cache
+	tempDir = t.TempDir()
+	cache, err = Open(tempDir, true)
+	as.NoError(err)
+
+	as.NoError(cache.Close())
+	_, err = os.Stat(cache.db.Path())
+	as.ErrorIs(err, os.ErrNotExist, "temp db path %s should not exist after closing the cache")
+}