Complete context on forwarded local errors

[onechat] / tree_test.go

diff --git a/tree_test.go b/tree_test.go
index 2f23d4d22d3eebcd182fb20a06a10da895dff9fc..37ecc9489de5c99eb75edb61f7353da931d728ac 100644 (file)
--- a/tree_test.go
+++ b/tree_test.go
@@ -61,6 +61,36 @@ func TestTreeBuildsEachNodeOnce(t *testing.T) {
        require.Equal(t, "user: a", treeReadNode(t, tree, 0, 0).Text)
 }
 
+func TestTreeMissingNodeHasNoErrorAfterWrapping(t *testing.T) {
+       tree, err := openTree(t.Context(), t.TempDir(), 0, newTestClock().Now)
+       require.NoError(t, err)
+
+       t.Cleanup(func() {
+               require.NoError(t, tree.Close())
+       })
+
+       _, built, err := tree.Node(0, 0)
+       require.NoError(t, err)
+       require.False(t, built)
+}
+
+func TestTreeReadFailureKeepsItsCause(t *testing.T) {
+       tree, err := openTree(t.Context(), t.TempDir(), 1, newTestClock().Now)
+       require.NoError(t, err)
+       t.Cleanup(func() {
+               require.NoError(t, tree.Close())
+       })
+
+       require.NoError(t, tree.Add(treeTestNode(0, 0, "user: a")))
+       require.NoError(t, tree.levels[0].Close())
+
+       _, built, err := tree.Node(0, 0)
+       delete(tree.levels, 0)
+       require.ErrorIs(t, err, os.ErrClosed)
+       require.False(t, built)
+       require.ErrorContains(t, err, "find node position")
+}
+
 func TestTreeReopenLoadsTheSameNodes(t *testing.T) {
        root := t.TempDir()
        clock := newTestClock()