(I don't know that this is a bug, exactly, but. Was still the best-fit template.) I tried this code: fn main() { let x: Option<&[u8]> = Some(&[1, 2]); assert_eq!(x, Some(&[3, 4])); } I expected to see this happen: This should compile, an...
示例使用assert_eq!宏: rustCopy code fn main() { letx=5;lety=3+2;assert_eq!(x, y, "x and y must be equal"); // 如果 x 和 y 不相等,则会触发断言失败println!("x and y are equal");} 在上面的示例中,如果x和y不相等,assert_eq!宏会触发断言失败并输出错误信息,程序将停止运行。
assert_eq!(node.has_attributes(), false); assert!(!node.has_attributes()); } #[test] fn has_attributes_non_element() { // if node is a non-element, will always return false let node = Node::new_document(); assert_eq!(node.has_attributes(), false); assert!(!node.has_attributes...
[Rust Unit testing] assert & assert_eq pub fn is_even(num: i32) -> bool { num % 2 == 0 } /* This attribute indicates that the following module is a conditional compilation module that should only be compiled and run when tests are being executed. In other words, this code will ...
这是Rust 的 assert_eq! 宏实现。 由于篇幅太长,我仅复制了第一个分支: macro_rules! assert_eq { ($left:expr, $right:expr) => ({ match (&$left, &$right) { (left_val, right_val) => { if !(*left_val == *right_val) { panic!(r#"assertion failed: `(left == right)` left:...
因为assert失败时assert_eq!会调用Debug::fmt打印两个参数，方便调试。如果不想实现Debug，可以assert!(a...
因为assert失败时assert_eq!会调用Debug::fmt打印两个参数，方便调试。如果不想实现Debug，可以assert!(a...
像 assert! 一樣,這個宏有第二種形式,可以提供自定義的Panics消息。 例子 let a = 3; let b = 1 + 2; assert_eq!(a, b); assert_eq!(a, b, "we are testing addition with {} and {}", a, b);相關用法 Rust assert_ne用法及代碼示例 Rust assert_matches用法及代碼示例 Rust assert用法及...
Gtest是Google的一个开源框架，它主要用于写单元测试，检查真自己的程序是否符合预期行为。可在多个平台上...
不可以。目前，您必须自行检查差异或使用float-cmp crate。同时检查f32常量。