public void testWithModelElementList() {
final TestModelRoot root = TestModelRoot.TYPE.instantiate();
final ModelElementList<TestModelElementA> list = root.getList1();
final FunctionContext context = new ModelElementFunctionContext(root);
TestModelElementA a;
testForExpectedValue(context, "${ Avg( List1 ) }", new BigDecimal("0"));
testForExpectedValue(context, "${ Avg( List1, 'Value1' ) }", new BigDecimal("0"));
testForExpectedValue(context, "${ Avg( List1, 'Value2' ) }", new BigDecimal("0"));
a = list.insert();
a.setValue1("1");
a.setValue2(2);
testForExpectedValue(context, "${ Avg( List1 ) }", new BigDecimal("1"));
testForExpectedValue(context, "${ Avg( List1, 'Value1' ) }", new BigDecimal("1"));
testForExpectedValue(context, "${ Avg( List1, 'Value2' ) }", new BigDecimal("2"));
a = list.insert();
a.setValue1("2");
a.setValue2(3);
a = list.insert();
a.setValue1("3.5");
a.setValue2(4);
testForExpectedValue(context, "${ Avg( List1 ) }", new BigDecimal("2.2"));
testForExpectedValue(context, "${ Avg( List1, 'Value1' ) }", new BigDecimal("2.2"));
testForExpectedValue(context, "${ Avg( List1, 'Value2' ) }", new BigDecimal("3"));
testForExpectedError(
context, "${ Avg( List1, 'abc' ) }", "Property TestModelElementA.abc could not be found.");
testForExpectedError(
context,
"${ Avg( List1, 'Element1' ) }",
"Property TestModelElementA.Element1 is not a value property.");
testForExpectedError(
context,
"${ Avg( List2 ) }",
"Element type TestModelElementB does not contain a value property.");
final FunctionResult result =
ExpressionLanguageParser.parse("${ Avg( List1, 'Value1' ) }").evaluate(context);
assertEquals(new BigDecimal("2.2"), result.value());
list.get(0).setValue1("2");
list.get(1).setValue1("3.5");
assertEquals(new BigDecimal("3.0"), result.value());
a = list.insert();
a.setValue1("5.2");
assertEquals(new BigDecimal("3.6"), result.value());
}
private void test(final String expr, final Object expected, final FunctionContext context) {
final Object actual = ExpressionLanguageParser.parse(expr).evaluate(context).value();
assertEquals(expected, actual);
}