Adding support for chem units

tests/test_output.cpp

@@ -22,7 +22,7 @@
 
 #include "epanet_output.h"
 
-#define DATA_PATH "./net1.out"
+#define DATA_PATH "./example1.out"
 
 using namespace std; 
 
@@ -142,6 +142,15 @@ BOOST_FIXTURE_TEST_CASE(test_getNetSize, Fixture)
     ENR_free((void**)&i_array);
 }
 
+BOOST_FIXTURE_TEST_CASE(test_getUnits, Fixture) {
+    int flag;
+
+    error = ENR_getUnits(p_handle, ENR_chemUnits, &flag);
+	BOOST_REQUIRE(error == 0);
+
+	BOOST_CHECK_EQUAL(flag, ENR_MGL);
+}
+
 BOOST_FIXTURE_TEST_CASE(test_getElementName, Fixture) {
     char* name = new char[MAXID];
     int length, index = 1;