package com.baeldung.jna; import static org.junit.jupiter.api.Assertions.*; import org.junit.jupiter.api.Test; import com.sun.jna.Native; import com.sun.jna.Platform; class CMathUnitTest { @Test void whenCallNative_thenSuccess() { CMath lib = Native.load(Platform.isWindows() ? "msvcrt" : "c", CMath.class); double result = lib.cosh(0); assertEquals(1.0,result); } }