diff --git a/icu4c/source/test/intltest/apicoll.cpp b/icu4c/source/test/intltest/apicoll.cpp
index 4527705349c..9bb0c09674f 100644
--- a/icu4c/source/test/intltest/apicoll.cpp
+++ b/icu4c/source/test/intltest/apicoll.cpp
@@ -111,13 +111,17 @@ CollationAPITest::TestProperty(/* char* par */)
     logln("The property tests begin : ");
     logln("Test ctors : ");
     col = Collator::createInstance(Locale::getEnglish(), success);
-
-    if (U_FAILURE(success))
-    {
+    if (U_FAILURE(success)){
         errcheckln(success, "Default Collator creation failed. - %s", u_errorName(success));
         return;
     }
 
+    col->getKeywordValuesForLocale("", Locale::getEnglish(),true,success);
+    if (U_FAILURE(success)){
+        errcheckln(success, "Get Keyword Values for Locale failed. - %s", u_errorName(success));
+        return;
+    }
+
     col->getVersion(versionArray);
     for (i=0; i<4; ++i) {
       if (versionArray[i] != currVersionArray[i]) {
@@ -132,6 +136,7 @@ CollationAPITest::TestProperty(/* char* par */)
     doAssert((col->compare("blackbird", "black-bird") == Collator::GREATER), "black-bird > blackbird comparison failed");
     doAssert((col->compare("black bird", "black-bird") == Collator::LESS), "black bird > black-bird comparison failed");
     doAssert((col->compare("Hello", "hello") == Collator::GREATER), "Hello > hello comparison failed");
+    doAssert((col->compare("","",success) == Collator::EQUAL), "Comparison between empty strings failed");
 
     doAssert((col->compareUTF8("\x61\x62\xc3\xa4", "\x61\x62\xc3\x9f", success) == UCOL_LESS), "ab a-umlaut < ab sharp-s UTF-8 comparison failed");
     success = U_ZERO_ERROR;
diff --git a/icu4c/source/test/intltest/numfmtst.cpp b/icu4c/source/test/intltest/numfmtst.cpp
index 46e511064c4..20c92887744 100644
--- a/icu4c/source/test/intltest/numfmtst.cpp
+++ b/icu4c/source/test/intltest/numfmtst.cpp
@@ -29,6 +29,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include "cstring.h"
+#include "unicode/numsys.h"
 
 //#define NUMFMTST_CACHE_DEBUG 1
 #ifdef NUMFMTST_CACHE_DEBUG 
@@ -2688,6 +2689,27 @@ void NumberFormatTest::TestNumberingSystems() {
         errln("FAIL: getInstance(en_US@numbers=foobar) should have returned U_UNSUPPORTED_ERROR");
     }
 
+    NumberingSystem *ns = NumberingSystem::createInstance(ec);
+    if (U_FAILURE(ec)) {
+        dataerrln("FAIL: NumberingSystem::createInstance(ec); - %s", u_errorName(ec));
+    }
+
+    const NumberingSystem ns1 = NumberingSystem::NumberingSystem();
+    NumberingSystem::NumberingSystem(ns1);
+    if (U_FAILURE(ec)) {
+        dataerrln("FAIL: NumberingSystem::NumberingSystem(ns1); - %s", u_errorName(ec));
+    }
+
+    ns->getDynamicClassID();
+    if (U_FAILURE(ec)) {
+        dataerrln("FAIL: NumberingSystem::getDynamicClassID(); - %s", u_errorName(ec));
+    }
+
+    ns->getStaticClassID();
+    if (U_FAILURE(ec)) {
+        dataerrln("FAIL: NumberingSystem::getStaticClassID(); - %s", u_errorName(ec));
+    }
+
     delete fmt1;
     delete fmt2;
     delete fmt3;