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add test coverage for IndexMut<&TicketId> (#142)
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@ -99,5 +99,11 @@ mod tests {
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let ticket = &store[id];
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assert_eq!(ticket.status, Status::InProgress);
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let ticket = &mut store[&id];
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ticket.status = Status::Done;
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let ticket = &store[id];
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assert_eq!(ticket.status, Status::Done);
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}
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}
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