28 lines
1.0 KiB
Go
28 lines
1.0 KiB
Go
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package jsonvalue
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import (
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"encoding/json"
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"reflect"
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"testing"
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)
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type trustedNamed string
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func TestCloneTrustedPreservesTypesAndDetaches(t *testing.T) {
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named := trustedNamed("value")
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original := map[string]any{"": map[string]any{"number": json.Number("9007199254740993")}, "typed": []string{"original"}, "pointer": &named, "nilmap": map[string]any(nil), "nilslice": []string(nil), "empty": []any{}}
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copy := CloneTrusted(original).(map[string]any)
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if !reflect.DeepEqual(copy, original) {
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t.Fatalf("clone = %#v", copy)
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}
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copy[""].(map[string]any)["number"] = json.Number("1")
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copy["typed"].([]string)[0] = "changed"
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*copy["pointer"].(*trustedNamed) = "changed"
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if original[""].(map[string]any)["number"] != json.Number("9007199254740993") || original["typed"].([]string)[0] != "original" || named != "value" {
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t.Fatal("clone shares mutable storage")
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}
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if copy["nilmap"].(map[string]any) != nil || copy["nilslice"].([]string) != nil || copy["empty"].([]any) == nil {
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t.Fatal("nil/empty shape changed")
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}
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}
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