}
@Test
public void testFunctionMapping() {
PMML4Helper ctx = new PMML4Helper();
assertEquals("(2 + 3 + 4)" , ctx.mapFunction("+","2","3","4"));
assertEquals("(2 - 3)" , ctx.mapFunction("-","2","3"));
assertEquals("(2 * 3 * 4)" , ctx.mapFunction("*","2","3","4"));
assertEquals("(2 / 4)" , ctx.mapFunction("/","2","4"));
assertEquals("(Math.min(2,Math.min(3,4)))" , ctx.mapFunction("min","2","3","4"));
assertEquals("(Math.max(2,Math.max(3,4)))" , ctx.mapFunction("max","2","3","4"));
assertEquals("(2 + 3 + 4)" , ctx.mapFunction("sum","2","3","4"));
assertEquals("(2 * 3 * 4)" , ctx.mapFunction("product","2","3","4"));
assertEquals("((2 + 3 + 4) / 3)" , ctx.mapFunction("avg","2","3","4"));
assertEquals("(3)" , ctx.mapFunction("median","1","2","3","4","5"));
assertEquals("( 0.5 * 3 + 0.5 * 4 )" , ctx.mapFunction("median","1","2","3","4","5","6"));
assertEquals("(Math.log10(2))" , ctx.mapFunction("log10","2"));
assertEquals("(Math.log(2))" , ctx.mapFunction("ln","2"));
assertEquals("(Math.sqrt(2))" , ctx.mapFunction("sqrt","2"));
assertEquals("(Math.abs(2))" , ctx.mapFunction("abs","2"));
assertEquals("(Math.exp(2))" , ctx.mapFunction("exp","2"));
assertEquals("(Math.pow(2,3))" , ctx.mapFunction("pow","2","3"));
assertEquals("(1)" , ctx.mapFunction("pow","0","0"));
assertEquals("(2 > 3 ? 1 : 0)" , ctx.mapFunction("threshold","2","3"));
assertEquals("(Math.floor(2))" , ctx.mapFunction("floor","2"));
assertEquals("(Math.ceil(2))" , ctx.mapFunction("ceil","2"));
assertEquals("(Math.round(2))" , ctx.mapFunction("round","2"));
assertEquals("(\"abc\".toString().toUpperCase())" , ctx.mapFunction("uppercase","\"abc\""));
assertEquals("(\"testString\".toString().substring(2,6))" , ctx.mapFunction("substring","\"testString\"","3","4"));
assertEquals("(new java.util.Formatter(new StringBuilder(),java.util.Locale.getDefault()).format(\"%3d\",3.0))" , ctx.mapFunction("formatNumber","\"%3d\"","3.0"));
assertEquals("(new java.text.SimpleDateFormat(\"format\").format(new SimpleDateFormat().parse(\"date\", java.util.Locale.ENGLISH)))" , ctx.mapFunction("formatDatetime","\"date\"","\"format\""));
assertEquals("(( (new java.text.SimpleDateFormat()).parse(\"date\").getTime() - (new java.text.SimpleDateFormat()).parse(\"01/01/1956\").getTime() ) / (1000*60*60*24))", ctx.mapFunction("dateDaysSinceYear","\"date\"","1956"));
assertEquals("(( (new java.text.SimpleDateFormat()).parse(\"date\").getTime() - (new java.text.SimpleDateFormat()).parse(\"01/01/1956\").getTime() ) / 1000)", ctx.mapFunction("dateSecondsSinceYear","\"date\"","1956"));
assertEquals("((new java.text.SimpleDateFormat()).parse(\"date\").getTime() % 1000)", ctx.mapFunction("dateSecondsSinceMidnight","\"date\""));
assertEquals("(a == b)" , ctx.mapFunction("equal","a","b"));
assertEquals("(a != b)" , ctx.mapFunction("notEqual","a","b"));
assertEquals("(a < b)" , ctx.mapFunction("lessThan","a","b"));
assertEquals("(a <= b)" , ctx.mapFunction("lessOrEqual","a","b"));
assertEquals("(a > b)" , ctx.mapFunction("greaterThan","a","b"));
assertEquals("(a >= b)" , ctx.mapFunction("greaterOrEqual","a","b"));
assertEquals("(a.contains(b))" , ctx.mapFunction("isIn","a","b"));
assertEquals("((! a.contains(b)))" , ctx.mapFunction("isNotIn","a","b"));
assertEquals("(( ! a ))" , ctx.mapFunction("not","a"));
assertEquals("(a && b && c)" , ctx.mapFunction("and","a","b","c"));
assertEquals("(a || b)" , ctx.mapFunction("or","a","b"));
assertEquals("(a ? b : c)" , ctx.mapFunction("if","a","b","c"));
assertEquals("(a ? b : null)" , ctx.mapFunction("if","a","b"));
}