[GitHub] [nifi-minifi-cpp] adamdebreceni commented on a change in pull request #918: MINIFICPP-1383 fix intdiv_ceil

[GitBox]

adamdebreceni commented on a change in pull request #918:
URL: https://github.com/apache/nifi-minifi-cpp/pull/918#discussion_r498763931



##########
File path: libminifi/test/unit/GeneralUtilsTest.cpp
##########
@@ -32,18 +32,20 @@ TEST_CASE("GeneralUtils::make_unique", "[make_unique]") {
   REQUIRE("test string" == *pstr);
 }
 
-TEST_CASE("GeneralUtils::intdiv_ceil", "[intdiv_ceil]") {
-  REQUIRE(0 == utils::intdiv_ceil(0, 1));
-  REQUIRE(0 == utils::intdiv_ceil(0, 2));
-  REQUIRE(1 == utils::intdiv_ceil(1, 2));
-  REQUIRE(1 == utils::intdiv_ceil(1, 3));
-  REQUIRE(1 == utils::intdiv_ceil(3, 3));
-  REQUIRE(2 == utils::intdiv_ceil(4, 3));
-  REQUIRE(2 == utils::intdiv_ceil(4, 3));
-  REQUIRE(0 == utils::intdiv_ceil(-1, 3));
-  REQUIRE(-1 == utils::intdiv_ceil(-3, 3));
-  REQUIRE(-1 == utils::intdiv_ceil(-4, 3));
-}
+static_assert(0 == utils::intdiv_ceil(0, 1), "");
+static_assert(0 == utils::intdiv_ceil(0, 2), "");
+static_assert(1 == utils::intdiv_ceil(1, 2), "");
+static_assert(1 == utils::intdiv_ceil(1, 3), "");
+static_assert(1 == utils::intdiv_ceil(3, 3), "");
+static_assert(2 == utils::intdiv_ceil(4, 3), "");
+static_assert(2 == utils::intdiv_ceil(4, 3), "");
+static_assert(0 == utils::intdiv_ceil(-1, 3), "");
+static_assert(-1 == utils::intdiv_ceil(-3, 3), "");
+static_assert(-1 == utils::intdiv_ceil(-4, 3), "");
+static_assert(2 == utils::intdiv_ceil(-4, -3), "");
+static_assert(2 == utils::intdiv_ceil(-5, -3), "");
+static_assert(0 == utils::intdiv_ceil(1, -3), "");
+static_assert(-1 == utils::intdiv_ceil(5, -3), "");

Review comment:
       you could SFINAE it:
   
   ```
   template<int n, int d, typename = void>
   struct does_compile : std::false_type {};
   
   template<int n, int d>
   struct does_compile<n, d, decltype(intdiv_ceil(n, d))> : std::true_type {};
   ```




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