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config/module: tree.Child on a nil tree works

This commit is contained in:
Mitchell Hashimoto 2016-09-14 13:35:54 -07:00
parent ba751c4e3b
commit 55ef966b88
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2 changed files with 9 additions and 0 deletions
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4
config/module/tree.go
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@ -66,6 +66,10 @@ func (t *Tree) Config() *config.Config {
// Child returns the child with the given path (by name). // Child returns the child with the given path (by name).
func (t *Tree) Child(path []string) *Tree { func (t *Tree) Child(path []string) *Tree {
if t == nil {
return nil
}
if len(path) == 0 { if len(path) == 0 {
return t return t
} }

5
config/module/tree_test.go
View File

@ -12,6 +12,11 @@ import (
) )
func TestTreeChild(t *testing.T) { func TestTreeChild(t *testing.T) {
var nilTree *Tree
if nilTree.Child(nil) != nil {
t.Fatal("child should be nil")
}
storage := testStorage(t) storage := testStorage(t)
tree := NewTree("", testConfig(t, "child")) tree := NewTree("", testConfig(t, "child"))
if err := tree.Load(storage, GetModeGet); err != nil { if err := tree.Load(storage, GetModeGet); err != nil {