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Use matches! in examples.

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This commit is contained in:
Stephen Chung 2020-03-14 23:40:30 +08:00
parent b9e4040635
commit 6e076c409d
6 changed files with 98 additions and 84 deletions
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9
examples/repl.rs
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@ -62,10 +62,11 @@ fn main() {
match input.as_str().trim() { match input.as_str().trim() {
"exit" | "quit" => break, // quit "exit" | "quit" => break, // quit
"ast" => { "ast" => {
// print the last AST if matches!(&ast, Some(_)) {
match &ast { // print the last AST
Some(ast) => println!("{:#?}", ast), println!("{:#?}", ast.as_ref().unwrap());
None => println!("()"), } else {
println!("()");
} }
continue; continue;
} }

18
tests/constants.rs
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@ -6,18 +6,16 @@ fn test_constant() -> Result<(), EvalAltResult> {
assert_eq!(engine.eval::<i64>("const x = 123; x")?, 123); assert_eq!(engine.eval::<i64>("const x = 123; x")?, 123);
match engine.eval::<i64>("const x = 123; x = 42;") { assert!(
Err(EvalAltResult::ErrorAssignmentToConstant(var, _)) if var == "x" => (), matches!(engine.eval::<i64>("const x = 123; x = 42;").expect_err("expects error"),
Err(err) => return Err(err), EvalAltResult::ErrorAssignmentToConstant(var, _) if var == "x")
Ok(_) => panic!("expecting compilation error"), );
}
#[cfg(not(feature = "no_index"))] #[cfg(not(feature = "no_index"))]
match engine.eval::<i64>("const x = [1, 2, 3, 4, 5]; x[2] = 42;") { assert!(
Err(EvalAltResult::ErrorAssignmentToConstant(var, _)) if var == "x" => (), matches!(engine.eval::<i64>("const x = [1, 2, 3, 4, 5]; x[2] = 42;").expect_err("expects error"),
Err(err) => return Err(err), EvalAltResult::ErrorAssignmentToConstant(var, _) if var == "x")
Ok(_) => panic!("expecting compilation error"), );
}
Ok(()) Ok(())
} }

9
tests/decrement.rs
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@ -6,12 +6,9 @@ fn test_decrement() -> Result<(), EvalAltResult> {
assert_eq!(engine.eval::<INT>("let x = 10; x -= 7; x")?, 3); assert_eq!(engine.eval::<INT>("let x = 10; x -= 7; x")?, 3);
let r = engine.eval::<String>("let s = \"test\"; s -= \"ing\"; s"); assert!(matches!(engine
.eval::<String>(r#"let s = "test"; s -= "ing"; s"#)
match r { .expect_err("expects error"), EvalAltResult::ErrorFunctionNotFound(err, _) if err == "- (string, string)"));
Err(EvalAltResult::ErrorFunctionNotFound(err, _)) if err == "- (string, string)" => (),
_ => panic!(),
}
Ok(()) Ok(())
} }

110
tests/math.rs
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@ -24,54 +24,76 @@ fn test_math() -> Result<(), EvalAltResult> {
{ {
#[cfg(not(feature = "only_i32"))] #[cfg(not(feature = "only_i32"))]
{ {
match engine.eval::<INT>("(-9223372036854775808).abs()") { assert!(matches!(
Err(EvalAltResult::ErrorArithmetic(_, _)) => (), engine
r => panic!("should return overflow error: {:?}", r), .eval::<INT>("(-9223372036854775808).abs()")
} .expect_err("expects negation overflow"),
match engine.eval::<INT>("9223372036854775807 + 1") { EvalAltResult::ErrorArithmetic(_, _)
Err(EvalAltResult::ErrorArithmetic(_, _)) => (), ));
r => panic!("should return overflow error: {:?}", r), assert!(matches!(
} engine
match engine.eval::<INT>("-9223372036854775808 - 1") { .eval::<INT>("9223372036854775807 + 1")
Err(EvalAltResult::ErrorArithmetic(_, _)) => (), .expect_err("expects overflow"),
r => panic!("should return underflow error: {:?}", r), EvalAltResult::ErrorArithmetic(_, _)
} ));
match engine.eval::<INT>("9223372036854775807 * 9223372036854775807") { assert!(matches!(
Err(EvalAltResult::ErrorArithmetic(_, _)) => (), engine
r => panic!("should return overflow error: {:?}", r), .eval::<INT>("-9223372036854775808 - 1")
} .expect_err("expects underflow"),
match engine.eval::<INT>("9223372036854775807 / 0") { EvalAltResult::ErrorArithmetic(_, _)
Err(EvalAltResult::ErrorArithmetic(_, _)) => (), ));
r => panic!("should return division by zero error: {:?}", r), assert!(matches!(
} engine
match engine.eval::<INT>("9223372036854775807 % 0") { .eval::<INT>("9223372036854775807 * 9223372036854775807")
Err(EvalAltResult::ErrorArithmetic(_, _)) => (), .expect_err("expects overflow"),
r => panic!("should return division by zero error: {:?}", r), EvalAltResult::ErrorArithmetic(_, _)
} ));
assert!(matches!(
engine
.eval::<INT>("9223372036854775807 / 0")
.expect_err("expects division by zero"),
EvalAltResult::ErrorArithmetic(_, _)
));
assert!(matches!(
engine
.eval::<INT>("9223372036854775807 % 0")
.expect_err("expects division by zero"),
EvalAltResult::ErrorArithmetic(_, _)
));
} }
#[cfg(feature = "only_i32")] #[cfg(feature = "only_i32")]
{ {
match engine.eval::<INT>("2147483647 + 1") { assert!(matches!(
Err(EvalAltResult::ErrorArithmetic(_, _)) => (), engine
r => panic!("should return overflow error: {:?}", r), .eval::<INT>("2147483647 + 1")
} .expect_err("expects overflow"),
match engine.eval::<INT>("-2147483648 - 1") { EvalAltResult::ErrorArithmetic(_, _)
Err(EvalAltResult::ErrorArithmetic(_, _)) => (), ));
r => panic!("should return underflow error: {:?}", r), assert!(matches!(
} engine
match engine.eval::<INT>("2147483647 * 2147483647") { .eval::<INT>("-2147483648 - 1")
Err(EvalAltResult::ErrorArithmetic(_, _)) => (), .expect_err("expects underflow"),
r => panic!("should return overflow error: {:?}", r), EvalAltResult::ErrorArithmetic(_, _)
} ));
match engine.eval::<INT>("2147483647 / 0") { assert!(matches!(
Err(EvalAltResult::ErrorArithmetic(_, _)) => (), engine
r => panic!("should return division by zero error: {:?}", r), .eval::<INT>("2147483647 * 2147483647")
} .expect_err("expects overflow"),
match engine.eval::<INT>("2147483647 % 0") { EvalAltResult::ErrorArithmetic(_, _)
Err(EvalAltResult::ErrorArithmetic(_, _)) => (), ));
r => panic!("should return division by zero error: {:?}", r), assert!(matches!(
} engine
.eval::<INT>("2147483647 / 0")
.expect_err("expects division by zero"),
EvalAltResult::ErrorArithmetic(_, _)
));
assert!(matches!(
engine
.eval::<INT>("2147483647 % 0")
.expect_err("expects division by zero"),
EvalAltResult::ErrorArithmetic(_, _)
));
} }
} }

18
tests/mismatched_op.rs
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@ -5,12 +5,10 @@ use rhai::{Engine, EvalAltResult, RegisterFn, INT};
fn test_mismatched_op() { fn test_mismatched_op() {
let mut engine = Engine::new(); let mut engine = Engine::new();
let r = engine.eval::<INT>("60 + \"hello\""); assert!(
matches!(engine.eval::<INT>(r#"60 + "hello""#).expect_err("expects error"),
match r { EvalAltResult::ErrorMismatchOutputType(err, _) if err == "string")
Err(EvalAltResult::ErrorMismatchOutputType(err, _)) if err == "string" => (), );
_ => panic!(),
}
} }
#[test] #[test]
@ -30,14 +28,16 @@ fn test_mismatched_op_custom_type() {
engine.register_type_with_name::<TestStruct>("TestStruct"); engine.register_type_with_name::<TestStruct>("TestStruct");
engine.register_fn("new_ts", TestStruct::new); engine.register_fn("new_ts", TestStruct::new);
let r = engine.eval::<INT>("60 + new_ts()"); let r = engine
.eval::<INT>("60 + new_ts()")
.expect_err("expects error");
match r { match r {
#[cfg(feature = "only_i32")] #[cfg(feature = "only_i32")]
Err(EvalAltResult::ErrorFunctionNotFound(err, _)) if err == "+ (i32, TestStruct)" => (), EvalAltResult::ErrorFunctionNotFound(err, _) if err == "+ (i32, TestStruct)" => (),
#[cfg(not(feature = "only_i32"))] #[cfg(not(feature = "only_i32"))]
Err(EvalAltResult::ErrorFunctionNotFound(err, _)) if err == "+ (i64, TestStruct)" => (), EvalAltResult::ErrorFunctionNotFound(err, _) if err == "+ (i64, TestStruct)" => (),
_ => panic!(), _ => panic!(),
} }

18
tests/throw.rs
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@ -1,18 +1,14 @@
use rhai::{Engine, EvalAltResult, INT}; use rhai::{Engine, EvalAltResult};
#[test] #[test]
fn test_throw() { fn test_throw() {
let mut engine = Engine::new(); let mut engine = Engine::new();
match engine.eval::<INT>(r#"if true { throw "hello" }"#) { assert!(matches!(
Ok(_) => panic!("not an error"), engine.eval::<()>(r#"if true { throw "hello" }"#).expect_err("expects error"),
Err(EvalAltResult::ErrorRuntime(s, _)) if s == "hello" => (), EvalAltResult::ErrorRuntime(s, _) if s == "hello"));
Err(err) => panic!("wrong error: {}", err),
}
match engine.eval::<INT>(r#"throw;"#) { assert!(matches!(
Ok(_) => panic!("not an error"), engine.eval::<()>(r#"throw;"#).expect_err("expects error"),
Err(EvalAltResult::ErrorRuntime(s, _)) if s == "" => (), EvalAltResult::ErrorRuntime(s, _) if s == ""));
Err(err) => panic!("wrong error: {}", err),
}
} }