TestCase("horizontal rule followed by vertical rule",
        """inputs:
          |  x1 : { upper: 10, lower: 5 }
          |  excks_two : { lower: 5, upper : 10, step: 1 }
          |objectives:
          |  f1: x1 + excks_two
          """,
        listOf(
            INPUTS, COLON,
                INDENT, KEY, COLON, INDENT_H, UPPER, COLON, POSITIVE_INTEGER, INDENT_H, LOWER, COLON, POSITIVE_INTEGER,
                INDENT, KEY, COLON, INDENT_H, LOWER, COLON, POSITIVE_INTEGER, INDENT_H, UPPER, COLON, POSITIVE_INTEGER, INDENT_H, STEP, COLON, POSITIVE_INTEGER,
            OBJECTIVES, COLON,
                INDENT, KEY, COLON, SCALAR_VALUE,
            EOF
        ),
        DocumentContext::class {
            + InputContext::class {
                + VariableDefinition::class {
                    + VariableValueAssignment::class
                    + VariableValueAssignment::class
                }
                + VariableDefinition::class {
                    + VariableValueAssignment::class
                    + VariableValueAssignment::class
                    + VariableValueAssignment::class
                }
            }
            + ObjectivesAssignment::class {
                + FunctionDefinition::class {
                    + ExpressionAssignment::class
                }
            }
        }  
)