fees: refactor: rename policy_fee_tests.cpp to feerounder_tests.cpp

diff --git a/src/test/CMakeLists.txt b/src/test/CMakeLists.txt
index 3b9dafc5..b3f1e3c2 100644
--- a/src/test/CMakeLists.txt
+++ b/src/test/CMakeLists.txt
@@ -43,6 +43,7 @@ add_executable(test_bitcoin
   descriptor_tests.cpp
   disconnected_transactions.cpp
   feefrac_tests.cpp
+  feerounder_tests.cpp
   flatfile_tests.cpp
   fs_tests.cpp
   getarg_tests.cpp
@@ -72,7 +73,6 @@ add_executable(test_bitcoin
   pcp_tests.cpp
   peerman_tests.cpp
   pmt_tests.cpp
-  policy_fee_tests.cpp
   policyestimator_tests.cpp
   pool_tests.cpp
   pow_tests.cpp
diff --git a/src/test/feerounder_tests.cpp b/src/test/feerounder_tests.cpp
new file mode 100644
index 00000000..400437e6
--- /dev/null
+++ b/src/test/feerounder_tests.cpp
@@ -0,0 +1,35 @@
+// Copyright (c) 2020-2021 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <consensus/amount.h>
+#include <policy/fees.h>
+
+#include <boost/test/unit_test.hpp>
+
+#include <set>
+
+BOOST_AUTO_TEST_SUITE(fee_rounder_tests)
+
+BOOST_AUTO_TEST_CASE(FeeRounder)
+{
+    FastRandomContext rng{/*fDeterministic=*/true};
+    FeeFilterRounder fee_rounder{CFeeRate{1000}, rng};
+
+    // check that 1000 rounds to 974 or 1071
+    std::set<CAmount> results;
+    while (results.size() < 2) {
+        results.emplace(fee_rounder.round(1000));
+    }
+    BOOST_CHECK_EQUAL(*results.begin(), 974);
+    BOOST_CHECK_EQUAL(*++results.begin(), 1071);
+
+    // check that negative amounts rounds to 0
+    BOOST_CHECK_EQUAL(fee_rounder.round(-0), 0);
+    BOOST_CHECK_EQUAL(fee_rounder.round(-1), 0);
+
+    // check that MAX_MONEY rounds to 9170997
+    BOOST_CHECK_EQUAL(fee_rounder.round(MAX_MONEY), 9170997);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
diff --git a/src/test/policy_fee_tests.cpp b/src/test/policy_fee_tests.cpp
deleted file mode 100644
index 29d70cb5..00000000
--- a/src/test/policy_fee_tests.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright (c) 2020-2021 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#include <consensus/amount.h>
-#include <policy/fees.h>
-
-#include <boost/test/unit_test.hpp>
-
-#include <set>
-
-BOOST_AUTO_TEST_SUITE(policy_fee_tests)
-
-BOOST_AUTO_TEST_CASE(FeeRounder)
-{
-    FastRandomContext rng{/*fDeterministic=*/true};
-    FeeFilterRounder fee_rounder{CFeeRate{1000}, rng};
-
-    // check that 1000 rounds to 974 or 1071
-    std::set<CAmount> results;
-    while (results.size() < 2) {
-        results.emplace(fee_rounder.round(1000));
-    }
-    BOOST_CHECK_EQUAL(*results.begin(), 974);
-    BOOST_CHECK_EQUAL(*++results.begin(), 1071);
-
-    // check that negative amounts rounds to 0
-    BOOST_CHECK_EQUAL(fee_rounder.round(-0), 0);
-    BOOST_CHECK_EQUAL(fee_rounder.round(-1), 0);
-
-    // check that MAX_MONEY rounds to 9170997
-    BOOST_CHECK_EQUAL(fee_rounder.round(MAX_MONEY), 9170997);
-}
-
-BOOST_AUTO_TEST_SUITE_END()