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tpl: Fix reflection bug in merge

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Value.Type().Key() must only be called on map values.

Fixes #7899
This commit is contained in:
Cameron Moore 2020-10-28 21:44:38 -05:00 committed by Bjørn Erik Pedersen
parent 56a343507c
commit 6d95dc9d74
2 changed files with 13 additions and 0 deletions
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4
tpl/collections/merge.go
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@ -106,6 +106,10 @@ func mergeMap(dst, src reflect.Value) reflect.Value {
dve := dv.Elem() dve := dv.Elem()
if dve.Kind() == reflect.Map { if dve.Kind() == reflect.Map {
sve := sv.Elem() sve := sv.Elem()
if sve.Kind() != reflect.Map {
continue
}
if dve.Type().Key() == sve.Type().Key() { if dve.Type().Key() == sve.Type().Key() {
out.SetMapIndex(key, mergeMap(dve, sve)) out.SetMapIndex(key, mergeMap(dve, sve))
} }

9
tpl/collections/merge_test.go
View file

@ -111,6 +111,15 @@ func TestMerge(t *testing.T) {
}, },
maps.Params{"a": 1, "b": maps.Params{"d": 1, "e": 2, "f": 3}, "c": 3}, false, maps.Params{"a": 1, "b": maps.Params{"d": 1, "e": 2, "f": 3}, "c": 3}, false,
}, },
{
// https://github.com/gohugoio/hugo/issues/7899
"matching keys with non-map src value",
[]interface{}{
map[string]interface{}{"k": "v"},
map[string]interface{}{"k": map[string]interface{}{"k2": "v2"}},
},
map[string]interface{}{"k": map[string]interface{}{"k2": "v2"}}, false,
},
{"src nil", []interface{}{nil, simpleMap}, simpleMap, false}, {"src nil", []interface{}{nil, simpleMap}, simpleMap, false},
// Error cases. // Error cases.
{"dst not a map", []interface{}{nil, "not a map"}, nil, true}, {"dst not a map", []interface{}{nil, "not a map"}, nil, true},