1 files changed, 24 insertions, 14 deletions
diff --git a/src/test/util_tests.cpp b/src/test/util_tests.cpp
index 15fe1148fe..d0cd4b0a03 100644
--- a/src/test/util_tests.cpp
+++ b/src/test/util_tests.cpp
@@ -6,11 +6,12 @@
 
 #include <clientversion.h>
 #include <sync.h>
+#include <test/setup_common.h>
 #include <test/util.h>
-#include <util/strencodings.h>
 #include <util/moneystr.h>
+#include <util/strencodings.h>
+#include <util/string.h>
 #include <util/time.h>
-#include <test/setup_common.h>
 
 #include <stdint.h>
 #include <thread>
@@ -123,6 +124,19 @@ BOOST_AUTO_TEST_CASE(util_HexStr)
     );
 }
 
+BOOST_AUTO_TEST_CASE(util_Join)
+{
+    // Normal version
+    BOOST_CHECK_EQUAL(Join({}, ", "), "");
+    BOOST_CHECK_EQUAL(Join({"foo"}, ", "), "foo");
+    BOOST_CHECK_EQUAL(Join({"foo", "bar"}, ", "), "foo, bar");
+
+    // Version with unary operator
+    const auto op_upper = [](const std::string& s) { return ToUpper(s); };
+    BOOST_CHECK_EQUAL(Join<std::string>({}, ", ", op_upper), "");
+    BOOST_CHECK_EQUAL(Join<std::string>({"foo"}, ", ", op_upper), "FOO");
+    BOOST_CHECK_EQUAL(Join<std::string>({"foo", "bar"}, ", ", op_upper), "FOO, BAR");
+}
 
 BOOST_AUTO_TEST_CASE(util_FormatISO8601DateTime)
 {
@@ -899,7 +913,7 @@ BOOST_FIXTURE_TEST_CASE(util_ChainMerge, ChainMergeTestingSetup)
     // Results file is formatted like:
     //
     //   <input> || <output>
-    BOOST_CHECK_EQUAL(out_sha_hex, "b284f4b4a15dd6bf8c06213a69a004b1960388e1d9917173927db52ac220927f");
+    BOOST_CHECK_EQUAL(out_sha_hex, "94b4ad55c8ac639a56b93e36f7e32e4c611fd7d7dd7b2be6a71707b1eadcaec7");
 }
 
 BOOST_AUTO_TEST_CASE(util_FormatMoney)
@@ -1532,17 +1546,9 @@ BOOST_AUTO_TEST_CASE(test_ToLower)
     BOOST_CHECK_EQUAL(ToLower(0), 0);
     BOOST_CHECK_EQUAL(ToLower('\xff'), '\xff');
 
-    std::string testVector;
-    Downcase(testVector);
-    BOOST_CHECK_EQUAL(testVector, "");
-
-    testVector = "#HODL";
-    Downcase(testVector);
-    BOOST_CHECK_EQUAL(testVector, "#hodl");
-
-    testVector = "\x00\xfe\xff";
-    Downcase(testVector);
-    BOOST_CHECK_EQUAL(testVector, "\x00\xfe\xff");
+    BOOST_CHECK_EQUAL(ToLower(""), "");
+    BOOST_CHECK_EQUAL(ToLower("#HODL"), "#hodl");
+    BOOST_CHECK_EQUAL(ToLower("\x00\xfe\xff"), "\x00\xfe\xff");
 }
 
 BOOST_AUTO_TEST_CASE(test_ToUpper)
@@ -1553,6 +1559,10 @@ BOOST_AUTO_TEST_CASE(test_ToUpper)
     BOOST_CHECK_EQUAL(ToUpper('{'), '{');
     BOOST_CHECK_EQUAL(ToUpper(0), 0);
     BOOST_CHECK_EQUAL(ToUpper('\xff'), '\xff');
+
+    BOOST_CHECK_EQUAL(ToUpper(""), "");
+    BOOST_CHECK_EQUAL(ToUpper("#hodl"), "#HODL");
+    BOOST_CHECK_EQUAL(ToUpper("\x00\xfe\xff"), "\x00\xfe\xff");
 }
 
 BOOST_AUTO_TEST_CASE(test_Capitalize)