Achieve 100% test coverage

internal_test.go

@@ -0,0 +1,12 @@
+package puddle
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestRemoveResourcePanicsWithBugReportIfResourceDoesNotExist(t *testing.T) {
+	s := []*Resource{new(Resource), new(Resource), new(Resource)}
+	assert.PanicsWithValue(t, "BUG: removeResource could not find res in slice", func() { removeResource(s, new(Resource)) })
+}