rhai/tests/string.rs
2021-04-10 15:00:03 +08:00

400 lines
10 KiB
Rust

use rhai::{Engine, EvalAltResult, ImmutableString, Scope, INT};
#[test]
fn test_string() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
assert_eq!(
engine.eval::<String>(r#""Test string: \u2764""#)?,
"Test string: ❤"
);
assert_eq!(
engine.eval::<String>("\"Test\rstring: \\u2764\"")?,
"Test\rstring: ❤"
);
assert_eq!(
engine.eval::<String>(" \"Test string: \\u2764\\\n hello, world!\"")?,
"Test string: ❤ hello, world!"
);
assert_eq!(
engine.eval::<String>(" `Test string: \\u2764\nhello,\\nworld!`")?,
"Test string: \\u2764\nhello,\\nworld!"
);
assert_eq!(
engine.eval::<String>(" `\nTest string: \\u2764\nhello,\\nworld!`")?,
"Test string: \\u2764\nhello,\\nworld!"
);
assert_eq!(
engine.eval::<String>(" `\r\nTest string: \\u2764\nhello,\\nworld!`")?,
"Test string: \\u2764\nhello,\\nworld!"
);
assert_eq!(
engine.eval::<String>(r#""Test string: \x58""#)?,
"Test string: X"
);
assert_eq!(engine.eval::<String>(r#""\"hello\"""#)?, r#""hello""#);
assert_eq!(engine.eval::<String>(r#""foo" + "bar""#)?, "foobar");
assert!(engine.eval::<bool>(r#"let y = "hello, world!"; "world" in y"#)?);
assert!(engine.eval::<bool>(r#"let y = "hello, world!"; 'w' in y"#)?);
assert!(!engine.eval::<bool>(r#"let y = "hello, world!"; "hey" in y"#)?);
assert_eq!(engine.eval::<String>(r#""foo" + 123"#)?, "foo123");
#[cfg(not(feature = "no_object"))]
assert_eq!(engine.eval::<String>("to_string(42)")?, "42");
#[cfg(not(feature = "no_index"))]
{
assert_eq!(engine.eval::<char>(r#"let y = "hello"; y[1]"#)?, 'e');
assert_eq!(engine.eval::<char>(r#"let y = "hello"; y[-1]"#)?, 'o');
assert_eq!(engine.eval::<char>(r#"let y = "hello"; y[-4]"#)?, 'e');
}
#[cfg(not(feature = "no_object"))]
assert_eq!(engine.eval::<INT>(r#"let y = "hello"; y.len"#)?, 5);
#[cfg(not(feature = "no_object"))]
assert_eq!(
engine.eval::<INT>(r#"let y = "hello"; y.clear(); y.len"#)?,
0
);
assert_eq!(engine.eval::<INT>(r#"let y = "hello"; len(y)"#)?, 5);
#[cfg(not(feature = "no_object"))]
#[cfg(not(feature = "no_index"))]
assert_eq!(engine.eval::<char>(r#"let y = "hello"; y[y.len-1]"#)?, 'o');
#[cfg(not(feature = "no_float"))]
assert_eq!(engine.eval::<String>(r#""foo" + 123.4556"#)?, "foo123.4556");
Ok(())
}
#[test]
fn test_string_dynamic() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
let mut scope = Scope::new();
scope.push("x", "foo");
scope.push("y", "foo");
scope.push("z", "foo");
assert!(engine.eval_with_scope::<bool>(&mut scope, r#"x == "foo""#)?);
assert!(engine.eval_with_scope::<bool>(&mut scope, r#"y == "foo""#)?);
assert!(engine.eval_with_scope::<bool>(&mut scope, r#"z == "foo""#)?);
Ok(())
}
#[test]
fn test_string_mut() -> Result<(), Box<EvalAltResult>> {
let mut engine = Engine::new();
engine.register_fn("foo", |s: &str| s.len() as INT);
engine.register_fn("bar", |s: String| s.len() as INT);
engine.register_fn("baz", |s: &mut String| s.len());
assert_eq!(engine.eval::<INT>(r#"foo("hello")"#)?, 5);
assert_eq!(engine.eval::<INT>(r#"bar("hello")"#)?, 5);
assert!(
matches!(*engine.eval::<INT>(r#"baz("hello")"#).expect_err("should error"),
EvalAltResult::ErrorFunctionNotFound(f, _) if f == "baz (&str | ImmutableString | String)"
)
);
Ok(())
}
#[cfg(not(feature = "no_object"))]
#[test]
fn test_string_substring() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
assert_eq!(
engine.eval::<String>(r#"let x = "hello! \u2764\u2764\u2764"; x.sub_string(-2, 2)"#)?,
"❤❤"
);
assert_eq!(
engine.eval::<String>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.sub_string(1, 5)"#
)?,
"❤❤ he"
);
assert_eq!(
engine.eval::<String>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.sub_string(1)"#
)?,
"❤❤ hello! ❤❤❤"
);
assert_eq!(
engine.eval::<String>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.sub_string(99)"#
)?,
""
);
assert_eq!(
engine.eval::<String>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.sub_string(1, -1)"#
)?,
""
);
assert_eq!(
engine.eval::<String>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.sub_string(1, 999)"#
)?,
"❤❤ hello! ❤❤❤"
);
assert_eq!(
engine.eval::<String>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.crop(1, -1); x"#
)?,
""
);
assert_eq!(
engine.eval::<String>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.crop(4, 6); x"#
)?,
"hello!"
);
assert_eq!(
engine.eval::<String>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.crop(1, 999); x"#
)?,
"❤❤ hello! ❤❤❤"
);
assert_eq!(
engine.eval::<String>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x -= 'l'; x"#
)?,
"❤❤❤ heo! ❤❤❤"
);
assert_eq!(
engine.eval::<String>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x -= "\u2764\u2764"; x"#
)?,
"❤ hello! ❤"
);
assert_eq!(
engine.eval::<INT>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.index_of('\u2764')"#
)?,
0
);
assert_eq!(
engine.eval::<INT>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.index_of('\u2764', 5)"#
)?,
11
);
assert_eq!(
engine.eval::<INT>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.index_of('\u2764', -6)"#
)?,
11
);
assert_eq!(
engine.eval::<INT>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.index_of('\u2764', 999)"#
)?,
-1
);
assert_eq!(
engine.eval::<INT>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.index_of('x')"#
)?,
-1
);
Ok(())
}
#[cfg(not(feature = "no_object"))]
#[test]
fn test_string_format() -> Result<(), Box<EvalAltResult>> {
#[derive(Debug, Clone)]
struct TestStruct {
field: i64,
}
let mut engine = Engine::new();
engine
.register_type_with_name::<TestStruct>("TestStruct")
.register_fn("new_ts", || TestStruct { field: 42 })
.register_fn("to_string", |ts: TestStruct| format!("TS={}", ts.field))
.register_fn("to_debug", |ts: TestStruct| {
format!("!!!TS={}!!!", ts.field)
});
assert_eq!(
engine.eval::<String>(r#"let x = new_ts(); "foo" + x"#)?,
"fooTS=42"
);
assert_eq!(
engine.eval::<String>(r#"let x = new_ts(); x + "foo""#)?,
"TS=42foo"
);
#[cfg(not(feature = "no_index"))]
assert_eq!(
engine.eval::<String>(r#"let x = [new_ts()]; "foo" + x"#)?,
"foo[!!!TS=42!!!]"
);
Ok(())
}
#[test]
fn test_string_fn() -> Result<(), Box<EvalAltResult>> {
let mut engine = Engine::new();
engine.register_fn("set_to_x", |ch: &mut char| *ch = 'X');
#[cfg(not(feature = "no_index"))]
#[cfg(not(feature = "no_object"))]
assert_eq!(
engine.eval::<String>(r#"let x="foo"; x[0].set_to_x(); x"#)?,
"Xoo"
);
#[cfg(not(feature = "no_index"))]
assert_eq!(
engine.eval::<String>(r#"let x="foo"; set_to_x(x[0]); x"#)?,
"foo"
);
engine
.register_fn("foo1", |s: &str| s.len() as INT)
.register_fn("foo2", |s: ImmutableString| s.len() as INT)
.register_fn("foo3", |s: String| s.len() as INT)
.register_fn("foo4", |s: &mut ImmutableString| s.len() as INT);
assert_eq!(engine.eval::<INT>(r#"foo1("hello")"#)?, 5);
assert_eq!(engine.eval::<INT>(r#"foo2("hello")"#)?, 5);
assert_eq!(engine.eval::<INT>(r#"foo3("hello")"#)?, 5);
assert_eq!(engine.eval::<INT>(r#"foo4("hello")"#)?, 5);
Ok(())
}
#[cfg(not(feature = "no_object"))]
#[cfg(not(feature = "no_index"))]
#[test]
fn test_string_split() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
assert_eq!(
engine.eval::<INT>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.split(' ').len"#
)?,
3
);
assert_eq!(
engine.eval::<INT>(
r#"let x = "\u2764\u2764\u2764 hello! \u2764\u2764\u2764"; x.split("hello").len"#
)?,
2
);
Ok(())
}
#[test]
fn test_string_interpolated() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
assert_eq!(
engine.eval::<String>(
r"
let x = 40;
`hello ${x+2} worlds!`
"
)?,
"hello 42 worlds!"
);
assert_eq!(
engine.eval::<String>(
r#"
let x = 40;
"hello ${x+2} worlds!"
"#
)?,
"hello ${x+2} worlds!"
);
assert_eq!(
engine.eval::<String>(
r"
const x = 42;
`hello ${x} worlds!`
"
)?,
"hello 42 worlds!"
);
assert_eq!(engine.eval::<String>("`hello ${}world!`")?, "hello world!");
assert_eq!(
engine.eval::<String>(
r"
const x = 42;
`${x} worlds!`
"
)?,
"42 worlds!"
);
assert_eq!(
engine.eval::<String>(
r"
const x = 42;
`hello ${x}`
"
)?,
"hello 42"
);
assert_eq!(
engine.eval::<String>(
r"
const x = 20;
`hello ${let y = x + 1; `${y * 2}`} worlds!`
"
)?,
"hello 42 worlds!"
);
assert_eq!(
engine.eval::<String>(
r#"
let x = 42;
let y = 123;
`
Undeniable logic:
1) Hello, ${let w = `${x} world`; if x > 1 { w += "s" } w}!
2) If ${y} > ${x} then it is ${y > x}!
`
"#
)?,
"Undeniable logic:\n1) Hello, 42 worlds!\n2) If 123 > 42 then it is true!\n",
);
Ok(())
}