Test underpaying subsidy

tests/find.rs

@@ -83,7 +83,10 @@ fn regression_empty_block_crash() -> Result {
   Test::new()?
     .command("find --blocksdir blocks 0 --slot --as-of-height 1")
     .block()
-    .block_with_coinbase(false, true)
+    .block_with_coinbase(Coinbase {
+      include_coinbase_transaction: false,
+      ..Default::default()
+    })
     .expected_stdout("0.0.0.0\n")
     .run()
 }

tests/integration.rs

@@ -35,6 +35,22 @@ struct Output {
   tempdir: TempDir,
 }
 
+struct Coinbase {
+  include_coinbase_transaction: bool,
+  include_height: bool,
+  subsidy: u64,
+}
+
+impl Default for Coinbase {
+  fn default() -> Self {
+    Self {
+      include_coinbase_transaction: true,
+      include_height: true,
+      subsidy: 50 * COIN_VALUE,
+    }
+  }
+}
+
 struct Test {
   args: Vec<String>,
   blockfiles: Vec<usize>,
@@ -139,10 +155,10 @@ impl Test {
   }
 
   fn block(self) -> Self {
-    self.block_with_coinbase(true, true)
+    self.block_with_coinbase(Coinbase::default())
   }
 
-  fn block_with_coinbase(mut self, coinbase: bool, include_height: bool) -> Self {
+  fn block_with_coinbase(mut self, coinbase: Coinbase) -> Self {
     self.blocks.push(Block {
       header: BlockHeader {
         version: 0,
@@ -156,13 +172,13 @@ impl Test {
         bits: 0,
         nonce: 0,
       },
-      txdata: if coinbase {
+      txdata: if coinbase.include_coinbase_transaction {
         vec![Transaction {
           version: 0,
           lock_time: 0,
           input: vec![TxIn {
             previous_output: OutPoint::null(),
-            script_sig: if include_height {
+            script_sig: if coinbase.include_height {
               script::Builder::new()
                 .push_scriptint(self.blocks.len().try_into().unwrap())
                 .into_script()
@@ -173,7 +189,7 @@ impl Test {
             witness: vec![],
           }],
           output: vec![TxOut {
-            value: 50 * COIN_VALUE,
+            value: coinbase.subsidy,
             script_pubkey: script::Builder::new().into_script(),
           }],
         }]

tests/list.rs

@@ -80,10 +80,30 @@ fn duplicate_transaction_range() -> Result {
     .command(
       "list --blocksdir blocks d63a320a4b404d7933ca788e8f185f10e31e03bf6ab9fa4595bfedc2fcc5a4a8:0",
     )
-    .block_with_coinbase(true, false)
-    .block_with_coinbase(true, false)
+    .block_with_coinbase(Coinbase {
+      include_height: false,
+      ..Default::default()
+    })
+    .block_with_coinbase(Coinbase {
+      include_height: false,
+      ..Default::default()
+    })
     .block()
     .transaction(&[(0, 0, 0)], 1)
     .expected_stdout("[5000000000,10000000000)\n")
     .run()
 }
+
+#[test]
+fn underpay_subsidy() -> Result {
+  Test::new()?
+    .command(
+      "list --blocksdir blocks 12d57183977a1df616bafbb7dafbb4249e59d8f796ba556ad6bb75f0fa9fe0ea:0",
+    )
+    .block_with_coinbase(Coinbase {
+      subsidy: 50 * COIN_VALUE - 1,
+      ..Default::default()
+    })
+    .expected_stdout("[0,4999999999)\n")
+    .run()
+}