34 lines
978 B
Go
34 lines
978 B
Go
package usecase
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import (
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"encoding/json"
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"strings"
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"testing"
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"unicode/utf8"
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)
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func TestBoundedDiagnosticJSON(t *testing.T) {
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for _, input := range []string{"", "plain", "<&>\n\"", "雪☃", "a\xff\xfe\xffb", "\xff\xfe" + strings.Repeat("z", 100)} {
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for budget := 0; budget <= 30; budget++ {
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encoded, complete := boundedDiagnosticJSON(input, budget)
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if budget < 2 {
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if encoded != nil || complete {
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t.Fatalf("budget %d: %q %v", budget, encoded, complete)
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}
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continue
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}
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if len(encoded) > budget || !utf8.Valid(encoded) {
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t.Fatalf("budget %d: %q", budget, encoded)
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}
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var decoded string
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if err := json.Unmarshal(encoded, &decoded); err != nil {
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t.Fatal(err)
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}
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normalized := strings.ToValidUTF8(input, "\uFFFD")
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if !strings.HasPrefix(normalized, decoded) || complete != (decoded == normalized) {
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t.Fatalf("input %q budget %d: %q complete=%v normalized=%q", input, budget, decoded, complete, normalized)
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}
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}
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}
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}
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