@Test
public void testReadFieldsOneString() {

	// no spaces
	{
		String[] readFields = { "1,2" };

		TypeInformation<?> type = new TupleTypeInfo<Tuple3<Integer, Integer, Integer>>(BasicTypeInfo.INT_TYPE_INFO,
				BasicTypeInfo.INT_TYPE_INFO, BasicTypeInfo.INT_TYPE_INFO);
		SingleInputSemanticProperties sp = SemanticPropUtil.getSemanticPropsSingleFromString(null, null, readFields, type, type);

		FieldSet fs = sp.getReadFields();
		Assert.assertTrue(fs.size() == 2);
		Assert.assertTrue(fs.contains(2));
		Assert.assertTrue(fs.contains(1));
	}
	
	// with spaces
	{
		String[] readFields = { "  1  , 2   " };
		
		TypeInformation<?> type = new TupleTypeInfo<Tuple3<Integer, Integer, Integer>>(BasicTypeInfo.INT_TYPE_INFO,
				BasicTypeInfo.INT_TYPE_INFO, BasicTypeInfo.INT_TYPE_INFO);
		SingleInputSemanticProperties sp = SemanticPropUtil.getSemanticPropsSingleFromString(null, null, readFields, type, type);

		FieldSet fs = sp.getReadFields();
		Assert.assertTrue(fs.size() == 2);
		Assert.assertTrue(fs.contains(2));
		Assert.assertTrue(fs.contains(1));
	}
}