X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning-block-sync%2Fsrc%2Ftest_utils.rs;h=70a8982a0efb746a303bdcd530ec536c322e0be3;hb=b1ecfe705d77b1338c7df5e208d76eb6743f270c;hp=efd34f74ee5b3cb219566f1dcad5a8d4d9d57315;hpb=05ec06129c00655523780b2ea6ce57a538456164;p=rust-lightning

diff --git a/lightning-block-sync/src/test_utils.rs b/lightning-block-sync/src/test_utils.rs
index efd34f74..70a8982a 100644
--- a/lightning-block-sync/src/test_utils.rs
+++ b/lightning-block-sync/src/test_utils.rs
@@ -1,4 +1,4 @@
-use crate::{AsyncBlockSourceResult, BlockHeaderData, BlockSource, BlockSourceError};
+use crate::{AsyncBlockSourceResult, BlockHeaderData, BlockSource, BlockSourceError, ChainListener, UnboundedCache};
 use crate::poll::{Validate, ValidatedBlockHeader};
 
 use bitcoin::blockdata::block::{Block, BlockHeader};
@@ -7,9 +7,12 @@ use bitcoin::hash_types::BlockHash;
 use bitcoin::network::constants::Network;
 use bitcoin::util::uint::Uint256;
 
+use std::collections::VecDeque;
+
 #[derive(Default)]
 pub struct Blockchain {
 	pub blocks: Vec<Block>,
+	without_blocks: Option<std::ops::RangeFrom<usize>>,
 	without_headers: bool,
 	malformed_headers: bool,
 }
@@ -46,6 +49,10 @@ impl Blockchain {
 		self
 	}
 
+	pub fn without_blocks(self, range: std::ops::RangeFrom<usize>) -> Self {
+		Self { without_blocks: Some(range), ..self }
+	}
+
 	pub fn without_headers(self) -> Self {
 		Self { without_headers: true, ..self }
 	}
@@ -54,6 +61,18 @@ impl Blockchain {
 		Self { malformed_headers: true, ..self }
 	}
 
+	pub fn fork_at_height(&self, height: usize) -> Self {
+		assert!(height + 1 < self.blocks.len());
+		let mut blocks = self.blocks.clone();
+		let mut prev_blockhash = blocks[height].block_hash();
+		for block in blocks.iter_mut().skip(height + 1) {
+			block.header.prev_blockhash = prev_blockhash;
+			block.header.nonce += 1;
+			prev_blockhash = block.block_hash();
+		}
+		Self { blocks, without_blocks: None, ..*self }
+	}
+
 	pub fn at_height(&self, height: usize) -> ValidatedBlockHeader {
 		let block_header = self.at_height_unvalidated(height);
 		let block_hash = self.blocks[height].block_hash();
@@ -78,6 +97,16 @@ impl Blockchain {
 	pub fn disconnect_tip(&mut self) -> Option<Block> {
 		self.blocks.pop()
 	}
+
+	pub fn header_cache(&self, heights: std::ops::RangeInclusive<usize>) -> UnboundedCache {
+		let mut cache = UnboundedCache::new();
+		for i in heights {
+			let value = self.at_height(i);
+			let key = value.header.block_hash();
+			assert!(cache.insert(key, value).is_none());
+		}
+		cache
+	}
 }
 
 impl BlockSource for Blockchain {
@@ -103,8 +132,14 @@ impl BlockSource for Blockchain {
 
 	fn get_block<'a>(&'a mut self, header_hash: &'a BlockHash) -> AsyncBlockSourceResult<'a, Block> {
 		Box::pin(async move {
-			for block in self.blocks.iter() {
+			for (height, block) in self.blocks.iter().enumerate() {
 				if block.header.block_hash() == *header_hash {
+					if let Some(without_blocks) = &self.without_blocks {
+						if without_blocks.contains(&height) {
+							return Err(BlockSourceError::persistent("block not found"));
+						}
+					}
+
 					return Ok(block.clone());
 				}
 			}
@@ -124,3 +159,67 @@ impl BlockSource for Blockchain {
 		})
 	}
 }
+
+pub struct MockChainListener {
+	expected_blocks_connected: VecDeque<BlockHeaderData>,
+	expected_blocks_disconnected: VecDeque<BlockHeaderData>,
+}
+
+impl MockChainListener {
+	pub fn new() -> Self {
+		Self {
+			expected_blocks_connected: VecDeque::new(),
+			expected_blocks_disconnected: VecDeque::new(),
+		}
+	}
+
+	pub fn expect_block_connected(mut self, block: BlockHeaderData) -> Self {
+		self.expected_blocks_connected.push_back(block);
+		self
+	}
+
+	pub fn expect_block_disconnected(mut self, block: BlockHeaderData) -> Self {
+		self.expected_blocks_disconnected.push_back(block);
+		self
+	}
+}
+
+impl ChainListener for MockChainListener {
+	fn block_connected(&mut self, block: &Block, height: u32) {
+		match self.expected_blocks_connected.pop_front() {
+			None => {
+				panic!("Unexpected block connected: {:?}", block.block_hash());
+			},
+			Some(expected_block) => {
+				assert_eq!(block.block_hash(), expected_block.header.block_hash());
+				assert_eq!(height, expected_block.height);
+			},
+		}
+	}
+
+	fn block_disconnected(&mut self, header: &BlockHeader, height: u32) {
+		match self.expected_blocks_disconnected.pop_front() {
+			None => {
+				panic!("Unexpected block disconnected: {:?}", header.block_hash());
+			},
+			Some(expected_block) => {
+				assert_eq!(header.block_hash(), expected_block.header.block_hash());
+				assert_eq!(height, expected_block.height);
+			},
+		}
+	}
+}
+
+impl Drop for MockChainListener {
+	fn drop(&mut self) {
+		if std::thread::panicking() {
+			return;
+		}
+		if !self.expected_blocks_connected.is_empty() {
+			panic!("Expected blocks connected: {:?}", self.expected_blocks_connected);
+		}
+		if !self.expected_blocks_disconnected.is_empty() {
+			panic!("Expected blocks disconnected: {:?}", self.expected_blocks_disconnected);
+		}
+	}
+}