content: package io.agrest.exp.parser;
  
  import io.agrest.AgException;
  import io.agrest.protocol.Exp;
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.CsvSource;
  import org.junit.jupiter.params.provider.ValueSource;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  public class ExpGreaterTest {
  
      @ParameterizedTest
      @ValueSource(strings = {
              "a>b",
              "a > b",
              "a >  b",
              "$a > $b",
              "1 > 2",
              "1 > 2.2",
              "1 > TRUE",
              "'1' > '2'",
              "null > c",
              "a > currentDate()"
      })
      void parse(String expString) {
          assertEquals(ExpGreater.class, Exp.parse(expString).getClass());
      }
  
      @ParameterizedTest
      @CsvSource(delimiter = '|', value = {
              "a>b|a > b",
              "a > b|a > b"
      })
      public void parsedToString(String expString, String expected) {
          assertEquals(expected, Exp.parse(expString).toString());
      }
  
      @ParameterizedTest
      @ValueSource(strings = {">", "a >", "> b"})
      public void parseInvalidGrammar(String expString) {
          assertThrows(AgException.class, () -> Exp.parse(expString));
      }
  }
  