starbase_utils 0.13.6

General fs, io, serde, net, etc, utilities.
Documentation 
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use serde_norway::Value;
use starbase_sandbox::{assert_snapshot, create_sandbox};
use starbase_utils::{fs, yaml};
use std::fs::OpenOptions;
use std::io::prelude::*;
use std::path::Path;

mod merge {
    use super::*;

    #[test]
    fn merges_fields_without_mutating_inputs() {
        let prev: Value = yaml::parse(
            r#"
base:
str: abc
num: 123
bool: true
arr:
  - 1
  - 2
obj:
  key: 123
  nested:
    key2: abc
"#,
        )
        .unwrap();
        let next: Value = yaml::parse(
            r#"
base: {}
str: xyz
arr:
  - 1
  - 2
  - 3
obj:
  key:
  sub:
    key3: false
"#,
        )
        .unwrap();
        let expected: Value = yaml::parse(
            r#"
base: {}
str: xyz
num: 123
bool: true
arr:
  - 1
  - 2
  - 3
obj:
  key:
  nested:
    key2: abc
  sub:
    key3: false
"#,
        )
        .unwrap();
        let original_prev = prev.clone();
        let original_next = next.clone();

        assert_eq!(yaml::merge(&prev, &next), expected);
        assert_eq!(prev, original_prev);
        assert_eq!(next, original_next);
    }
}

mod editor_config {
    use super::*;

    pub fn append_editor_config(root: &Path, data: &str) {
        let mut file = OpenOptions::new()
            .append(true)
            .open(root.join(".editorconfig"))
            .unwrap();

        writeln!(file, "\n\n{data}").unwrap();
    }

    #[test]
    fn uses_defaults_when_no_config() {
        let sandbox = create_sandbox("editor-config");
        let path = sandbox.path().join("file.yaml");
        let data: Value = yaml::read_file(&path).unwrap();

        yaml::write_file_with_config(&path, &data).unwrap();

        assert_snapshot!(fs::read_file(&path).unwrap());
    }

    #[test]
    fn can_change_space_indent() {
        let sandbox = create_sandbox("editor-config");
        let path = sandbox.path().join("file.yaml");

        append_editor_config(
            sandbox.path(),
            "[*.yaml]\nindent_style = space\nindent_size = 8",
        );

        let data: Value = yaml::read_file(&path).unwrap();

        yaml::write_file_with_config(&path, &data).unwrap();

        assert_snapshot!(fs::read_file(&path).unwrap());
    }

    #[test]
    fn can_change_tab_indent() {
        let sandbox = create_sandbox("editor-config");
        let path = sandbox.path().join("file.yaml");

        append_editor_config(sandbox.path(), "[*.yaml]\nindent_style = tab");

        let data: Value = yaml::read_file(&path).unwrap();

        yaml::write_file_with_config(&path, &data).unwrap();

        assert_snapshot!(fs::read_file(&path).unwrap());
    }

    #[test]
    fn can_enable_trailing_line() {
        let sandbox = create_sandbox("editor-config");
        let path = sandbox.path().join("file.yaml");

        append_editor_config(sandbox.path(), "[*.yaml]\ninsert_final_newline = true");

        let data: Value = yaml::read_file(&path).unwrap();

        yaml::write_file_with_config(&path, &data).unwrap();

        assert!(fs::read_file(&path).unwrap().ends_with('\n'));
    }

    #[test]
    fn can_disable_trailing_line() {
        let sandbox = create_sandbox("editor-config");
        let path = sandbox.path().join("file.yaml");

        append_editor_config(sandbox.path(), "[*.yaml]\ninsert_final_newline = false");

        let data: Value = yaml::read_file(&path).unwrap();

        yaml::write_file_with_config(&path, &data).unwrap();

        assert!(!fs::read_file(&path).unwrap().ends_with('\n'));
    }
}