@Test
public void parseAeqBandXgrtY() {
assertTrue(parser.hasHigherPrecedence("=", "AND"));
assertFalse(parser.hasHigherPrecedence("=", ">"));
List<String> list = parser.toPrefix("a = b AND x > y");
assertEquals(Arrays.asList("a", "b", "=", "x", "y", ">", "AND"), list);
}
@Test
public void testTwoInnerParanthesis() {
String s = "a and b AND ( ( ( a > c AND b > d ) OR ( x = y ) ) ) OR t > u";
List<String> list = parser.toPrefix(s);
assertEquals(
Arrays.asList(
"a", "b", "and", "a", "c", ">", "b", "d", ">", "AND", "x", "y", "=", "OR", "AND", "t",
"u", ">", "OR"),
list);
}
@Test
public void testComplexStatement() {
String s =
"age > 5 AND ( ( ( active = true ) AND ( age = 23 ) ) OR age > 40 ) AND ( salary > 10 ) OR age = 10";
List<String> list = parser.toPrefix(s);
assertEquals(
Arrays.asList(
"age", "5", ">", "active", "true", "=", "age", "23", "=", "AND", "age", "40", ">", "OR",
"AND", "salary", "10", ">", "AND", "age", "10", "=", "OR"),
list);
}
@Test
public void shouldNotThrowOnRandomInput() {
Random random = new SecureRandom();
StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < 1000; i++) {
stringBuilder.setLength(0);
for (int n = 0; n < 1000; n++) {
stringBuilder.append((char) (random.nextInt() & 0xFFFF));
}
parser.toPrefix(stringBuilder.toString());
}
}
@Test
public void testBetween() {
String s = "b between 10 and 15";
List<String> list = parser.toPrefix(s);
assertEquals(Arrays.asList("b", "10", "15", "between"), list);
}
@Test
public void parseAeqBandOpenBsmlCorDgtEclose() {
String s = "A = B AND ( B < C OR D > E )";
List<String> list = parser.toPrefix(s);
assertEquals(Arrays.asList("A", "B", "=", "B", "C", "<", "D", "E", ">", "OR", "AND"), list);
}
@Test
public void parseAEqB() {
String s = "a = b";
List<String> list = parser.toPrefix(s);
assertEquals(Arrays.asList("a", "b", "="), list);
}
@Test
public void parseEmpty() {
List<String> l = parser.toPrefix("");
assertEquals(Arrays.asList(), l);
}
@Test
public void parserShouldThrowOnInvalidInput() {
parser.toPrefix(")");
}
@Test(expected = NullPointerException.class)
public void parserShouldNotAcceptNull() {
parser.toPrefix(null);
fail();
}
@Test
public void testNotEqual() {
String s = "b != 30";
List<String> list = parser.toPrefix(s);
assertEquals(Arrays.asList("b", "30", "!="), list);
}
@Test
public void testNot() {
String s = "a and not(b) OR c not in ( 4, 5, 6 )";
List<String> list = parser.toPrefix(s);
assertEquals(Arrays.asList("a", "b", "not", "and", "c", "4,5,6", "in", "not", "OR"), list);
}