@Test
public void
evaluatingAParsedCoalesceExpression_NullAndAStringWithQuotationMarks_RetunsQuotationMarks()
throws Exception {
Expression e = Coalesce.parse("null ?? \"\\\"\\\"\\\"\\\"\"");
assertThat(e.evaluate(), is(equalTo("\\\"\\\"\\\"\\\"")));
}
@Test
public void evaluatingAParsedCoalesceExpression_AAndB_RetunsA() throws Exception {
Expression e = Coalesce.parse("\"a\" ?? \"b\"");
assertThat(e.evaluate(), is(equalTo("a")));
}
@Test
public void parseCoalesceExpression_AAndB_RightConstantIsB() {
Coalesce e = Coalesce.parse("\"a\" ?? \"b\"");
Constant constant = (Constant) e.getRight();
assertThat(constant.getValue(), is(equalTo("b")));
}