test: rename policy estimator tests to block policy estimator tests

Rename policyestimator_tests.cpp to blockpolicyestimator_tests.cpp.

Also rename the policy_estimator fuzz target to block_policy_estimator so the
test names match CBlockPolicyEstimator.

This makes the block policy fee rate estimator test files accurate and concise,
which makes adding another fee rate estimator test files straightforward.

src/test/CMakeLists.txt

@@ -24,6 +24,7 @@ add_executable(test_bitcoin
   blockfilter_index_tests.cpp
   blockfilter_tests.cpp
   blockmanager_tests.cpp
+  blockpolicyestimator_tests.cpp
   bloom_tests.cpp
   bswap_tests.cpp
   btcsignals_tests.cpp
@@ -76,7 +77,6 @@ add_executable(test_bitcoin
   pcp_tests.cpp
   peerman_tests.cpp
   pmt_tests.cpp
-  policyestimator_tests.cpp
   pool_tests.cpp
   pow_tests.cpp
   prevector_tests.cpp

src/test/blockpolicyestimator_tests.cpp

@@ -15,7 +15,7 @@
 
 #include <boost/test/unit_test.hpp>
 
-BOOST_FIXTURE_TEST_SUITE(policyestimator_tests, ChainTestingSetup)
+BOOST_FIXTURE_TEST_SUITE(blockpolicyestimator_tests, ChainTestingSetup)
 
 BOOST_AUTO_TEST_CASE(BlockPolicyEstimates)
 {

src/test/fuzz/CMakeLists.txt

@@ -20,6 +20,7 @@ add_executable(fuzz
   block_header.cpp
   block_index.cpp
   block_index_tree.cpp
+  block_policy_estimator.cpp
   blockfilter.cpp
   bloom_filter.cpp
   buffered_file.cpp
@@ -89,7 +90,6 @@ add_executable(fuzz
   parse_script.cpp
   parse_univalue.cpp
   partially_downloaded_block.cpp
-  policy_estimator.cpp
   policy_estimator_io.cpp
   poolresource.cpp
   pow.cpp

src/test/fuzz/block_policy_estimator.cpp

@@ -21,13 +21,13 @@ namespace {
 const BasicTestingSetup* g_setup;
 } // namespace
 
-void initialize_policy_estimator()
+void initialize_block_policy_estimator()
 {
     static const auto testing_setup = MakeNoLogFileContext<>();
     g_setup = testing_setup.get();
 }
 
-FUZZ_TARGET(policy_estimator, .init = initialize_policy_estimator)
+FUZZ_TARGET(block_policy_estimator, .init = initialize_block_policy_estimator)
 {
     FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
     bool good_data{true};