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add adder project (testing examples)

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This commit is contained in:
Timothy Warren 2019-01-31 15:09:52 -05:00
parent 65f88596cb
commit 9fec8ed7f9
7 changed files with 278 additions and 52 deletions
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1
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@ -19,6 +19,7 @@
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5
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@ -74,6 +74,11 @@
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201
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@ -236,13 +246,43 @@
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7
adder/Cargo.toml Normal file
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@ -0,0 +1,7 @@
[package]
name = "adder"
version = "0.1.0"
authors = ["Timothy Warren <twarren@nabancard.com>"]
edition = "2018"
[dependencies]

104
adder/src/lib.rs Normal file
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@ -0,0 +1,104 @@
#[derive(Debug)]
pub struct Rectangle {
length: u32,
width: u32,
}
impl Rectangle {
pub fn can_hold(&self, other: &Rectangle) -> bool {
self.length > other.length && self.width > other.width
}
}
pub fn add_two(a: i32) -> i32 {
a + 2
}
pub fn greeting(name: &str) -> String {
format!("Hello, {}!", name)
}
pub struct Guess {
value: i32,
}
impl Guess {
pub fn new(value: i32) -> Guess {
if value < 1 {
panic!("Guess value must be greater than or equal to 1, got {}.",
value);
} else if value > 100 {
panic!("Guess value must be less than or equal to 100, got {}.",
value);
}
Guess {
value
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn it_works() -> Result<(), String> {
if 2 + 2 == 4 {
Ok(())
} else {
Err(String::from("two plus two does not equal four"))
}
}
#[test]
fn add_two_and_two() {
assert_eq!(4, add_two(2));
}
#[test]
fn add_three_and_two() {
assert_eq!(5, add_two(3));
}
#[test]
fn one_hundred() {
assert_eq!(102, add_two(100));
}
#[test]
fn larger_can_hold_smaller() {
let larger = Rectangle { length: 8, width: 7 };
let smaller = Rectangle { length: 5, width: 1 };
assert!(larger.can_hold(&smaller));
}
#[test]
fn smaller_cannot_hold_larger() {
let larger = Rectangle { length: 8, width: 7 };
let smaller = Rectangle { length: 5, width: 1 };
assert!(!smaller.can_hold(&larger));
}
#[test]
fn it_adds_two() {
assert_eq!(4, add_two(2));
}
#[test]
fn greeting_contains_name() {
let result = greeting("Carol");
assert!(
result.contains("Carol"),
"Greeting did not contain name, value was `{}`", result
);
}
#[test]
#[should_panic(expected = "Guess value must be less than or equal to 100")]
fn greater_than_100() {
Guess::new(200);
}
}

3
adder/tests/common/mod.rs Normal file
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@ -0,0 +1,3 @@
pub fn setup() {
// setup code specific to your library's tests would go here
}

9
adder/tests/integration_test.rs Normal file
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@ -0,0 +1,9 @@
use adder;
mod common;
#[test]
fn it_adds_two() {
common::setup();
assert_eq!(4, adder::add_two(2));
}