expressive/tests/integration.rs

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extern crate evalexpr;
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use evalexpr::{error::*, *};
#[test]
fn test_unary_examples() {
assert_eq!(eval("3"), Ok(Value::Int(3)));
assert_eq!(eval("3.3"), Ok(Value::Float(3.3)));
assert_eq!(eval("true"), Ok(Value::Boolean(true)));
assert_eq!(eval("false"), Ok(Value::Boolean(false)));
assert_eq!(
eval("blub"),
Err(EvalexprError::VariableIdentifierNotFound(
"blub".to_string()
))
);
assert_eq!(eval("-3"), Ok(Value::Int(-3)));
assert_eq!(eval("-3.6"), Ok(Value::Float(-3.6)));
assert_eq!(eval("----3"), Ok(Value::Int(3)));
}
#[test]
fn test_binary_examples() {
assert_eq!(eval("1+3"), Ok(Value::Int(4)));
assert_eq!(eval("3+1"), Ok(Value::Int(4)));
assert_eq!(eval("3-5"), Ok(Value::Int(-2)));
assert_eq!(eval("5-3"), Ok(Value::Int(2)));
assert_eq!(eval("5 / 4"), Ok(Value::Int(1)));
assert_eq!(eval("5 *3"), Ok(Value::Int(15)));
assert_eq!(eval("1.0+3"), Ok(Value::Float(4.0)));
assert_eq!(eval("3.0+1"), Ok(Value::Float(4.0)));
assert_eq!(eval("3-5.0"), Ok(Value::Float(-2.0)));
assert_eq!(eval("5-3.0"), Ok(Value::Float(2.0)));
assert_eq!(eval("5 / 4.0"), Ok(Value::Float(1.25)));
assert_eq!(eval("5.0 *3"), Ok(Value::Float(15.0)));
assert_eq!(eval("5.0 *-3"), Ok(Value::Float(-15.0)));
assert_eq!(eval("5.0 *- 3"), Ok(Value::Float(-15.0)));
assert_eq!(eval("5.0 * -3"), Ok(Value::Float(-15.0)));
assert_eq!(eval("5.0 * - 3"), Ok(Value::Float(-15.0)));
assert_eq!(eval("-5.0 *-3"), Ok(Value::Float(15.0)));
assert_eq!(eval("3+-1"), Ok(Value::Int(2)));
assert_eq!(eval("-3-5"), Ok(Value::Int(-8)));
assert_eq!(eval("-5--3"), Ok(Value::Int(-2)));
}
#[test]
fn test_arithmetic_precedence_examples() {
assert_eq!(eval("1+3-2"), Ok(Value::Int(2)));
assert_eq!(eval("3+1*5"), Ok(Value::Int(8)));
assert_eq!(eval("2*3-5"), Ok(Value::Int(1)));
assert_eq!(eval("5-3/3"), Ok(Value::Int(4)));
assert_eq!(eval("5 / 4*2"), Ok(Value::Int(2)));
assert_eq!(eval("1-5 *3/15"), Ok(Value::Int(0)));
assert_eq!(eval("15/7/2.0"), Ok(Value::Float(1.0)));
assert_eq!(eval("15.0/7/2"), Ok(Value::Float(15.0 / 7.0 / 2.0)));
assert_eq!(eval("15.0/-7/2"), Ok(Value::Float(15.0 / -7.0 / 2.0)));
assert_eq!(eval("-15.0/7/2"), Ok(Value::Float(-15.0 / 7.0 / 2.0)));
assert_eq!(eval("-15.0/7/-2"), Ok(Value::Float(-15.0 / 7.0 / -2.0)));
}
#[test]
fn test_braced_examples() {
assert_eq!(eval("(1)"), Ok(Value::Int(1)));
assert_eq!(eval("( 1.0 )"), Ok(Value::Float(1.0)));
assert_eq!(eval("( true)"), Ok(Value::Boolean(true)));
assert_eq!(eval("( -1 )"), Ok(Value::Int(-1)));
assert_eq!(eval("-(1)"), Ok(Value::Int(-1)));
assert_eq!(eval("-(1 + 3) * 7"), Ok(Value::Int(-28)));
assert_eq!(eval("(1 * 1) - 3"), Ok(Value::Int(-2)));
assert_eq!(eval("4 / (2 * 2)"), Ok(Value::Int(1)));
assert_eq!(eval("7/(7/(7/(7/(7/(7)))))"), Ok(Value::Int(1)));
}
#[test]
fn test_mod_examples() {
assert_eq!(eval("1 % 4"), Ok(Value::Int(1)));
assert_eq!(eval("6 % 4"), Ok(Value::Int(2)));
assert_eq!(eval("1 % 4 + 2"), Ok(Value::Int(3)));
}
#[test]
fn test_pow_examples() {
assert_eq!(eval("1 ^ 4"), Ok(Value::Float(1.0)));
assert_eq!(eval("6 ^ 4"), Ok(Value::Float(6.0f64.powf(4.0))));
assert_eq!(eval("1 ^ 4 + 2"), Ok(Value::Float(3.0)));
assert_eq!(eval("2 ^ (4 + 2)"), Ok(Value::Float(64.0)));
}
#[test]
fn test_boolean_examples() {
assert_eq!(eval("true && false"), Ok(Value::Boolean(false)));
assert_eq!(
eval("true && false || true && true"),
Ok(Value::Boolean(true))
);
assert_eq!(eval("5 > 4 && 1 <= 1"), Ok(Value::Boolean(true)));
assert_eq!(eval("5.0 <= 4.9 || !(4 > 3.5)"), Ok(Value::Boolean(false)));
}
#[test]
fn test_with_context() {
let mut context = HashMapContext::new();
context.set_value("tr", Value::Boolean(true)).unwrap();
context.set_value("fa", Value::Boolean(false)).unwrap();
context.set_value("five", Value::Int(5)).unwrap();
context.set_value("six", Value::Int(6)).unwrap();
context.set_value("half", Value::Float(0.5)).unwrap();
context.set_value("zero", Value::Int(0)).unwrap();
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assert_eq!(eval_with_context("tr", &context), Ok(Value::Boolean(true)));
assert_eq!(eval_with_context("fa", &context), Ok(Value::Boolean(false)));
assert_eq!(
eval_with_context("tr && false", &context),
Ok(Value::Boolean(false))
);
assert_eq!(
eval_with_context("five + six", &context),
Ok(Value::Int(11))
);
assert_eq!(
eval_with_context("five * half", &context),
Ok(Value::Float(2.5))
);
assert_eq!(
eval_with_context("five < six && true", &context),
Ok(Value::Boolean(true))
);
}
#[test]
fn test_functions() {
let mut context = HashMapContext::new();
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context
.set_function(
"sub2".to_string(),
Function::new(
Some(1),
Box::new(|arguments| {
if let Value::Int(int) = arguments[0] {
Ok(Value::Int(int - 2))
} else if let Value::Float(float) = arguments[0] {
Ok(Value::Float(float - 2.0))
} else {
Err(EvalexprError::expected_number(arguments[0].clone()))
}
}),
),
)
.unwrap();
context
.set_value("five".to_string(), Value::Int(5))
.unwrap();
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assert_eq!(eval_with_context("sub2 5", &context), Ok(Value::Int(3)));
assert_eq!(eval_with_context("sub2(5)", &context), Ok(Value::Int(3)));
assert_eq!(eval_with_context("sub2 five", &context), Ok(Value::Int(3)));
assert_eq!(eval_with_context("sub2(five)", &context), Ok(Value::Int(3)));
assert_eq!(
eval_with_context("sub2(3) + five", &context),
Ok(Value::Int(6))
);
}
#[test]
fn test_n_ary_functions() {
let mut context = HashMapContext::new();
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context
.set_function(
"sub2",
Function::new(
Some(1),
Box::new(|arguments| {
if let Value::Int(int) = arguments[0] {
Ok(Value::Int(int - 2))
} else if let Value::Float(float) = arguments[0] {
Ok(Value::Float(float - 2.0))
} else {
Err(EvalexprError::expected_number(arguments[0].clone()))
}
}),
),
)
.unwrap();
context
.set_function(
"avg",
Function::new(
Some(2),
Box::new(|arguments| {
expect_number(&arguments[0])?;
expect_number(&arguments[1])?;
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if let (Value::Int(a), Value::Int(b)) = (&arguments[0], &arguments[1]) {
Ok(Value::Int((a + b) / 2))
} else {
Ok(Value::Float(
(arguments[0].as_float()? + arguments[1].as_float()?) / 2.0,
))
}
}),
),
)
.unwrap();
context
.set_function(
"muladd",
Function::new(
Some(3),
Box::new(|arguments| {
expect_number(&arguments[0])?;
expect_number(&arguments[1])?;
expect_number(&arguments[2])?;
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if let (Value::Int(a), Value::Int(b), Value::Int(c)) =
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(&arguments[0], &arguments[1], &arguments[2])
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{
Ok(Value::Int(a * b + c))
} else {
Ok(Value::Float(
arguments[0].as_float()? * arguments[1].as_float()?
+ arguments[2].as_float()?,
))
}
}),
),
)
.unwrap();
context
.set_function(
"count",
Function::new(
None,
Box::new(|arguments| Ok(Value::Int(arguments.len() as IntType))),
),
)
.unwrap();
context
.set_value("five".to_string(), Value::Int(5))
.unwrap();
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assert_eq!(eval_with_context("avg(7, 5)", &context), Ok(Value::Int(6)));
assert_eq!(
eval_with_context("avg(sub2 5, 5)", &context),
Ok(Value::Int(4))
);
assert_eq!(
eval_with_context("sub2(avg(3, 6))", &context),
Ok(Value::Int(2))
);
assert_eq!(
eval_with_context("sub2 avg(3, 6)", &context),
Ok(Value::Int(2))
);
assert_eq!(
eval_with_context("muladd(3, 6, -4)", &context),
Ok(Value::Int(14))
);
assert_eq!(
eval_with_context("count()", &context),
Err(EvalexprError::WrongOperatorArgumentAmount {
actual: 0,
expected: 1
})
);
assert_eq!(
eval_with_context("count(3, 5.5, 2)", &context),
Ok(Value::Int(3))
);
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assert_eq!(eval_with_context("count 5", &context), Ok(Value::Int(1)));
assert_eq!(
eval_with_context("min(4.0, 3)", &context),
Ok(Value::Int(3))
);
assert_eq!(
eval_with_context("max(4.0, 3)", &context),
Ok(Value::Float(4.0))
);
}
#[test]
fn test_errors() {
assert_eq!(
eval("-true"),
Err(EvalexprError::expected_number(Value::Boolean(true)))
);
assert_eq!(
eval("1-true"),
Err(EvalexprError::expected_number(Value::Boolean(true)))
);
assert_eq!(
eval("true-"),
Err(EvalexprError::WrongOperatorArgumentAmount {
actual: 1,
expected: 2
})
);
assert_eq!(eval("!(()true)"), Err(EvalexprError::AppendedToLeafNode));
}
#[test]
fn test_no_panic() {
assert!(eval(&format!(
"{} + {}",
IntType::max_value(),
IntType::max_value()
))
.is_err());
assert!(eval(&format!(
"-{} - {}",
IntType::max_value(),
IntType::max_value()
))
.is_err());
assert!(eval(&format!("-(-{} - 1)", IntType::max_value())).is_err());
assert!(eval(&format!(
"{} * {}",
IntType::max_value(),
IntType::max_value()
))
.is_err());
assert!(eval(&format!("{} / {}", IntType::max_value(), 0)).is_err());
assert!(eval(&format!("{} % {}", IntType::max_value(), 0)).is_err());
assert!(eval(&format!(
"{} ^ {}",
IntType::max_value(),
IntType::max_value()
))
.is_ok());
}
#[test]
fn test_shortcut_functions() {
let mut context = HashMapContext::new();
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context
.set_value("string", Value::from("a string"))
.unwrap();
// assert_eq!(eval_string("???"));
assert_eq!(
eval_string_with_context("string", &context),
Ok("a string".to_string())
);
assert_eq!(eval_float("3.3"), Ok(3.3));
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assert_eq!(eval_float_with_context("3.3", &context), Ok(3.3));
assert_eq!(eval_int("3"), Ok(3));
assert_eq!(eval_int_with_context("3", &context), Ok(3));
assert_eq!(eval_number("3"), Ok(3.0));
assert_eq!(eval_number_with_context("3", &context), Ok(3.0));
assert_eq!(eval_boolean("true"), Ok(true));
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assert_eq!(eval_boolean_with_context("true", &context), Ok(true));
assert_eq!(eval_tuple("3,3"), Ok(vec![Value::Int(3), Value::Int(3)]));
assert_eq!(
eval_tuple_with_context("3,3", &context),
Ok(vec![Value::Int(3), Value::Int(3)])
);
// assert_eq!(build_operator_tree("???").unwrap().eval_string());
assert_eq!(
build_operator_tree("string")
.unwrap()
.eval_string_with_context(&context),
Ok("a string".to_string())
);
assert_eq!(build_operator_tree("3.3").unwrap().eval_float(), Ok(3.3));
assert_eq!(
build_operator_tree("3.3")
.unwrap()
.eval_float_with_context(&context),
Ok(3.3)
);
assert_eq!(build_operator_tree("3").unwrap().eval_int(), Ok(3));
assert_eq!(
build_operator_tree("3")
.unwrap()
.eval_int_with_context(&context),
Ok(3)
);
assert_eq!(
build_operator_tree("3")
.unwrap()
.eval_number_with_context(&context),
Ok(3.0)
);
assert_eq!(
build_operator_tree("true").unwrap().eval_boolean(),
Ok(true)
);
assert_eq!(
build_operator_tree("true")
.unwrap()
.eval_boolean_with_context(&context),
Ok(true)
);
assert_eq!(
build_operator_tree("3,3").unwrap().eval_tuple(),
Ok(vec![Value::Int(3), Value::Int(3)])
);
assert_eq!(
build_operator_tree("3,3")
.unwrap()
.eval_tuple_with_context(&context),
Ok(vec![Value::Int(3), Value::Int(3)])
);
}
#[cfg(feature = "serde")]
#[test]
fn test_serde() {
let strings = ["3", "4+4", "21^(2*2)--3>5||!true"];
for string in &strings {
let manual_tree = build_operator_tree(string).unwrap();
let serde_tree: Node = ron::de::from_str(&format!("\"{}\"", string)).unwrap();
assert_eq!(manual_tree.eval(), serde_tree.eval());
}
}