use time::PrimitiveDateTime as DateTime;
/// Create a datetime from the given numeric point in time.
///
/// Panics if any field is invalid.
fn dt(year: i32, month: u8, day: u8, hour: u8, minute: u8, second: u8) -> DateTime {
    use time::{Date, Time};
    DateTime::new(
        Date::from_calendar_date(year, month.try_into().unwrap(), day).unwrap(),
        Time::from_hms(hour, minute, second).unwrap(),
    )
}
#[test]
fn test_date() {
    let start_date = dt(2011, 4, 25, 0, 0, 0);
    assert_eq!(gigasecond::after(start_date), dt(2043, 1, 1, 1, 46, 40));
}
#[test]
#[ignore]
fn test_another_date() {
    let start_date = dt(1977, 6, 13, 0, 0, 0);
    assert_eq!(gigasecond::after(start_date), dt(2009, 2, 19, 1, 46, 40));
}
#[test]
#[ignore]
fn test_third_date() {
    let start_date = dt(1959, 7, 19, 0, 0, 0);
    assert_eq!(gigasecond::after(start_date), dt(1991, 3, 27, 1, 46, 40));
}
#[test]
#[ignore]
fn test_datetime() {
    let start_date = dt(2015, 1, 24, 22, 0, 0);
    assert_eq!(gigasecond::after(start_date), dt(2046, 10, 2, 23, 46, 40));
}
#[test]
#[ignore]
fn test_another_datetime() {
    let start_date = dt(2015, 1, 24, 23, 59, 59);
    assert_eq!(gigasecond::after(start_date), dt(2046, 10, 3, 1, 46, 39));
}

use time::PrimitiveDateTime as DateTime;
// Returns a DateTime one billion seconds after start.
pub fn after(start: DateTime) -> DateTime {
    unimplemented!("What time is a gigasecond later than {}", start);
}

# Gigasecond
Welcome to Gigasecond on Exercism's Rust Track.
If you need help running the tests or submitting your code, check out `HELP.md`.
## Instructions
Given a moment, determine the moment that would be after a gigasecond
has passed.
A gigasecond is 10^9 (1,000,000,000) seconds.
If you're unsure what operations you can perform on `PrimitiveDateTime` take a look at the [time crate](https://docs.rs/time) which is listed as a dependency in the `Cargo.toml` file for this exercise.
## Source
### Created by
- @IanWhitney
### Contributed to by
- @andy5995
- @ashleygwilliams
- @cbzehner
- @coriolinus
- @cwhakes
- @EduardoBautista
- @efx
- @ErikSchierboom
- @houhoulis
- @IanWhitney
- @janczer
- @leoyvens
- @lutostag
- @mkantor
- @nfiles
- @NieDzejkob
- @ocstl
- @petertseng
- @rofrol
- @sacherjj
- @stringparser
- @xakon
- @ZapAnton
### Based on
Chapter 9 in Chris Pine's online Learn to Program tutorial. - http://pine.fm/LearnToProgram/?Chapter=09

# Help
## Running the tests
Execute the tests with:
```bash
$ cargo test
```
All but the first test have been ignored. After you get the first test to
pass, open the tests source file which is located in the `tests` directory
and remove the `#[ignore]` flag from the next test and get the tests to pass
again. Each separate test is a function with `#[test]` flag above it.
Continue, until you pass every test.
If you wish to run _only ignored_ tests without editing the tests source file, use:
```bash
$ cargo test -- --ignored
```
If you are using Rust 1.51 or later, you can run _all_ tests with
```bash
$ cargo test -- --include-ignored
```
To run a specific test, for example `some_test`, you can use:
```bash
$ cargo test some_test
```
If the specific test is ignored, use:
```bash
$ cargo test some_test -- --ignored
```
To learn more about Rust tests refer to the online [test documentation][rust-tests].
[rust-tests]: https://doc.rust-lang.org/book/ch11-02-running-tests.html
## Submitting your solution
You can submit your solution using the `exercism submit src/lib.rs` command.
This command will upload your solution to the Exercism website and print the solution page's URL.
It's possible to submit an incomplete solution which allows you to:
- See how others have completed the exercise
- Request help from a mentor
## Need to get help?
If you'd like help solving the exercise, check the following pages:
- The [Rust track's documentation](https://exercism.org/docs/tracks/rust)
- [Exercism's support channel on gitter](https://gitter.im/exercism/support)
- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
## Rust Installation
Refer to the [exercism help page][help-page] for Rust installation and learning
resources.
## Submitting the solution
Generally you should submit all files in which you implemented your solution (`src/lib.rs` in most cases). If you are using any external crates, please consider submitting the `Cargo.toml` file. This will make the review process faster and clearer.
## Feedback, Issues, Pull Requests
The GitHub [track repository][github] is the home for all of the Rust exercises. If you have feedback about an exercise, or want to help implement new exercises, head over there and create an issue. Members of the rust track team are happy to help!
If you want to know more about Exercism, take a look at the [contribution guide].
## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.
[help-page]: https://exercism.io/tracks/rust/learning
[github]: https://github.com/exercism/rust
[contribution guide]: https://exercism.io/docs/community/contributors

[package]
edition = "2021"
name = "gigasecond"
version = "2.0.0"
[dependencies]
time = "0.3"

# Generated by Cargo
# will have compiled files and executables
/target/
**/*.rs.bk
# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
# More information here http://doc.crates.io/guide.html#cargotoml-vs-cargolock
Cargo.lock

{"track":"rust","exercise":"gigasecond","id":"d09ccefb019e4079969f6ea31439a1e8","url":"https://exercism.org/tracks/rust/exercises/gigasecond","handle":"nicoty","is_requester":true,"auto_approve":false}

{
  "blurb": "Given a moment, determine the moment that would be after a gigasecond has passed.",
  "authors": [
    "IanWhitney"
  ],
  "contributors": [
    "andy5995",
    "ashleygwilliams",
    "cbzehner",
    "coriolinus",
    "cwhakes",
    "EduardoBautista",
    "efx",
    "ErikSchierboom",
    "houhoulis",
    "IanWhitney",
    "janczer",
    "leoyvens",
    "lutostag",
    "mkantor",
    "nfiles",
    "NieDzejkob",
    "ocstl",
    "petertseng",
    "rofrol",
    "sacherjj",
    "stringparser",
    "xakon",
    "ZapAnton"
  ],
  "files": {
    "solution": [
      "src/lib.rs"
    ],
    "test": [
      "tests/gigasecond.rs"
    ],
    "example": [
      ".meta/example.rs"
    ]
  },
  "source": "Chapter 9 in Chris Pine's online Learn to Program tutorial.",
  "source_url": "http://pine.fm/LearnToProgram/?Chapter=09"
}