テストの勉強

Author: okamoto

part1/doc-test/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "doc-test"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

part1/doc-test/src/lib.rs

@@ -0,0 +1,10 @@
+/// This function adds 2 numbers.
+/// # Example
+/// 
+/// ```
+/// 
+/// add(1, 2);
+/// ```
+pub fn add(x:i32, y:i32) -> i32 {
+    return x + y;
+}

part1/testing/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "testing"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

part1/testing/src/lib.rs

@@ -0,0 +1,41 @@
+pub fn add(x:i32, y:i32) -> i32 {
+    return x + y;
+}
+
+
+#[test]
+fn test_add() {
+    assert_eq!(0, add(0, 0));
+    assert_eq!(1, add(0, 1));
+    assert_eq!(1, add(1, 0));
+    assert_eq!(2, add(1, 1));
+}
+
+#[test]
+fn assert_ample() {
+    // 第一引数がfalseの場合にpanic!
+    assert!(true);
+    assert!(false, "panic! value={}", false);
+
+    // 2つの値が異なる場合にpanic!
+    assert_eq!(true, true);
+    // 2つの値が同じ場合にpanic!
+    assert_ne!(true, false);
+    
+    assert_eq!(true, false, "panic! value({}, {})", true, false);
+}
+
+//panic!が発生することを想定するテスト
+#[test]
+#[should_panic]
+fn test_panic() {
+    panic!("expected panic");
+}
+
+// 通常のcargo testでは実行されない、
+// cargo test -- --ignoredで実行される
+#[test]
+#[ignore]
+fn test_add_ignored() {
+    assert_eq!(-2, add(-1, -1));
+}

part1/testing/src/main.rs

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+
+
+fn main() {
+    println!("Hello, world!");
+}

part1/tests/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "tests"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

part1/tests/src/lib.rs

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+#[cfg(test)]
+mod tests {
+    use super::*;
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}