scripted-diff: test: Use CTxMemPool in TestingSetup

After this commit, there should be no explicit instantiation of
CTxMemPool in src/test other than those in fuzz/ and setup_common

-BEGIN VERIFY SCRIPT-
find_regex="CTxMemPool\s+([^;({]+)(|\(\)|\{\});" \
    && git grep -l -E "$find_regex" -- src/test \
        | grep -v -e "^src/test/util/setup_common.cpp$" \
                  -e "^src/test/fuzz/" \
        | xargs sed -i -E "s@$find_regex@CTxMemPool\& \1 = *Assert(m_node.mempool);@g"
-END VERIFY SCRIPT-

1 files changed, 4 insertions, 4 deletions

diff --git a/src/test/blockencodings_tests.cpp b/src/test/blockencodings_tests.cpp
index 875241094d..78b82b9b20 100644
--- a/src/test/blockencodings_tests.cpp
+++ b/src/test/blockencodings_tests.cpp
@@ -54,7 +54,7 @@ constexpr long SHARED_TX_OFFSET{3};
 
 BOOST_AUTO_TEST_CASE(SimpleRoundTripTest)
 {
-    CTxMemPool pool;
+    CTxMemPool& pool = *Assert(m_node.mempool);
     TestMemPoolEntryHelper entry;
     CBlock block(BuildBlockTestCase());
 
@@ -137,7 +137,7 @@ public:
 
 BOOST_AUTO_TEST_CASE(NonCoinbasePreforwardRTTest)
 {
-    CTxMemPool pool;
+    CTxMemPool& pool = *Assert(m_node.mempool);
     TestMemPoolEntryHelper entry;
     CBlock block(BuildBlockTestCase());
 
@@ -207,7 +207,7 @@ BOOST_AUTO_TEST_CASE(NonCoinbasePreforwardRTTest)
 
 BOOST_AUTO_TEST_CASE(SufficientPreforwardRTTest)
 {
-    CTxMemPool pool;
+    CTxMemPool& pool = *Assert(m_node.mempool);
     TestMemPoolEntryHelper entry;
     CBlock block(BuildBlockTestCase());
 
@@ -258,7 +258,7 @@ BOOST_AUTO_TEST_CASE(SufficientPreforwardRTTest)
 
 BOOST_AUTO_TEST_CASE(EmptyBlockRoundTripTest)
 {
-    CTxMemPool pool;
+    CTxMemPool& pool = *Assert(m_node.mempool);
     CMutableTransaction coinbase;
     coinbase.vin.resize(1);
     coinbase.vin[0].scriptSig.resize(10);