70 lines
1.7 KiB
Rust
70 lines
1.7 KiB
Rust
use std::iter;
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use futures::FutureExt;
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use zebra_chain::{
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chain_tip::{ChainTip, NoChainTip},
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parameters::Network::*,
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};
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use super::super::ChainTipSender;
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#[test]
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fn current_best_tip_is_initially_empty() {
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let (_chain_tip_sender, latest_chain_tip, _chain_tip_change) =
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ChainTipSender::new(None, Mainnet);
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assert_eq!(latest_chain_tip.best_tip_height(), None);
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assert_eq!(latest_chain_tip.best_tip_hash(), None);
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assert_eq!(
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latest_chain_tip.best_tip_mined_transaction_ids(),
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iter::empty().collect()
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);
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}
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#[test]
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fn empty_latest_chain_tip_is_empty() {
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let latest_chain_tip = NoChainTip;
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assert_eq!(latest_chain_tip.best_tip_height(), None);
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assert_eq!(latest_chain_tip.best_tip_hash(), None);
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assert_eq!(
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latest_chain_tip.best_tip_mined_transaction_ids(),
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iter::empty().collect()
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);
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}
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#[test]
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fn chain_tip_change_is_initially_not_ready() {
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let (_chain_tip_sender, _latest_chain_tip, mut chain_tip_change) =
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ChainTipSender::new(None, Mainnet);
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let first = chain_tip_change
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.wait_for_tip_change()
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.now_or_never()
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.transpose()
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.expect("watch sender is not dropped");
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assert_eq!(first, None);
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// try again, just to be sure
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let first = chain_tip_change
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.wait_for_tip_change()
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.now_or_never()
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.transpose()
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.expect("watch sender is not dropped");
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assert_eq!(first, None);
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// also test our manual `Clone` impl
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#[allow(clippy::redundant_clone)]
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let first_clone = chain_tip_change
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.clone()
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.wait_for_tip_change()
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.now_or_never()
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.transpose()
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.expect("watch sender is not dropped");
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assert_eq!(first_clone, None);
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}
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