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package com.seaofnodes.simple;
import com.seaofnodes.simple.codegen.CodeGen;
import com.seaofnodes.simple.type.TypeInteger;
import org.junit.Test;
import static org.junit.Assert.*;
public class ChainedComparisonTest {
@Test public void testAdjacentOperandsAndOperators() {
String[] expressions = {"10 < arg < 20", "0 < arg <= 3", "3 >= arg > 0",
"0 <= arg < 3", "0 < arg <= 3 < 4"};
String[][] expected = {{"0","0","1","0"}, {"0","1","0","0"},
{"0","1","0","0"}, {"1","0","0","0"},
{"0","1","0","0"}};
int[] args = {0,3,15,30};
for(int i=0;i<expressions.length;i++) {
CodeGen code = new CodeGen("return "+expressions[i]+";").driver(CodeGen.Phase.TypeCheck);
for(int j=0;j<args.length;j++) assertEquals(expressions[i],expected[i][j],Eval2.eval(code,args[j]));
}
}
@Test public void testSingleEvaluationAndShortCircuit() {
for(int seed:new int[]{2,13,123}) {
CodeGen code = new CodeGen("int x=arg; int y=0; val b=0 < x++ <= (y+=3) < (y+=1); return x*100+y*10+b;",TypeInteger.BOT,seed,true)
.driver(CodeGen.Phase.TypeCheck);
assertEquals("100",Eval2.eval(code,0));
assertEquals("441",Eval2.eval(code,3));
assertEquals("530",Eval2.eval(code,4));
}
try {
new CodeGen("return 0 < arg > 1;").parse();
fail("mixed directions");
} catch(RuntimeException e) {
assertEquals("Mixing relational directions in a chained relational test",e.getMessage());
}
}
}
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