[](https://crates.io/crates/tree-fs)
[](https://docs.rs/tree-fs)
# tree-fs
Oftentimes, testing scenarios involve interactions with the file system. `tree-fs` provides a convenient solution for creating file system trees tailored to the needs of your tests. This library offers:
- An easy way to generate a tree with recursive paths.
- Tree creation within a temporary folder.
- The ability to create a tree using either YAML or a builder.
## Usage
### From builder
With the builder API, you can define file paths and contents in a structured way. Here’s how to create a tree with the builder:
```rust
use tree_fs::TreeBuilder;
let tree_fs = TreeBuilder::default()
.add("test/foo.txt", "bar")
.add_empty("test/folder-a/folder-b/bar.txt")
.create()
.expect("create tree fs");
println!("created successfully in {}", tree_fs.root.display());
```
### Drop folder
When the `tree_fs` instance is dropped, the temporary folder and its contents are automatically deleted, which is particularly useful for tests that require a clean state.
```rust
use tree_fs::TreeBuilder;
let tree_fs = TreeBuilder::default()
.add("test/foo.txt", "bar")
.add_empty("test/folder-a/folder-b/bar.txt")
.drop(true)
.create()
.expect("create tree fs");
println!("created successfully in {}", tree_fs.root.display());
let path = tree_fs.root.clone();
assert!(path.exists());
drop(tree_fs);
assert!(!path.exists());
```
### Using a YAML File
You can define your file tree structure in a YAML file, which is then loaded and created by `tree-fs`. This method is great for more complex, predefined directory structures.
```rust
use std::path::PathBuf;
let yaml_path = PathBuf::from("tests/fixtures/tree.yaml");
let tree_fs = tree_fs::from_yaml_file(&yaml_path).expect("create tree fs");
assert!(tree_fs.root.exists())
```
### Using a YAML String
Alternatively, you can provide the YAML content as a string, which is particularly useful for inline definitions within test code.
```rust
let content = r#"
override_file: false
files:
- path: foo.json
content: |
{ "foo;": "bar" }
- path: folder/bar.yaml
content: |
foo: bar
"#;
///
let tree_fs = tree_fs::from_yaml_str(content).expect("create tree fs");
assert!(tree_fs.root.exists())
```
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