carols10cents/cargo-open

Add a test for trying to run `cargo open` without a `Cargo.toml`

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#9 建立於 2015年10月4日

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E-easyhelp wanted

描述

In main.rs, add a unit test for the cargo_dir function that checks that it panics if we try to run this command in a directory that doesn't have a Cargo.toml and thus would have no idea where to look to figure out where that crate might be!

Use the existing test marked should_panic for an example of how to make a test check that a function panics.

I doubt that this test will pass currently! Eventually, I'd like this to panic with a message like "Cannot find Cargo.toml file in the current directory" or similar.

貢獻者指南

技術棧
rust
領域
cli
議題類型
test
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
2
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
under 1 hour
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
fresh
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
basic Rust knowledgeunderstanding of unit tests
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
90
研究方向
Look at the `main.rs` file in the repository to find the `cargo dir` function. Examine the existing test marked `should panic` to understand the pattern for testing panics. Write a new test that calls `cargo dir` in a directory without a `Cargo.toml` and expects it to panic with a message like "Cannot find `Cargo.toml` file in the current directory". Ensure the test is added in the same test module as the existing test.