cpt 0.5.0

A filesystem tool that will copy a folder structure and if there is provided templating data when it encounders any `.tpl` files, it tries to fill it using Handlebar syntax and prints out the transformed version.
Documentation 
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use cpt::{args::FromArgs, cp, cpt, Cpt};
use std::fs;

use assert_cmd::prelude::*;
use std::process::Command;

fn do_assert(to: &str) -> std::result::Result<(), Box<dyn std::error::Error>> {
	let bar_path = format!("{}/bar.txt", to);

	assert_eq!(
		fs::read_to_string(bar_path)?.replace("\r\n", "\n"),
		"This will become bar: bar\nAnd this will stay as is: {{escaped}}\n"
	);

	let nontemp_path = format!("{}/foo/non-template.txt", to);

	assert_eq!(
		fs::read_to_string(nontemp_path)?.replace("\r\n", "\n"),
		"unused: {{unused}}"
	);

	Ok(())
}

#[test]
fn args_test() -> std::result::Result<(), Box<dyn std::error::Error>> {
	let from_og = "./templates/example".to_string();
	let to_og = "./templates/example_to_args".to_string();

	let cpt = Cpt::from_args(Some(&Cpt::new(from_og.clone(), to_og.clone())))?;

	assert_eq!(cpt.from, from_og);
	assert_eq!(cpt.to, to_og);
	assert_eq!(cpt.data, None);
	Ok(())
}

#[test]
fn cpt_test() -> std::result::Result<(), Box<dyn std::error::Error>> {
	let from = "./templates/example";
	let to = "./templates/example_to_cpt";
	let mut data = serde_json::Map::new();
	data.insert(
		"foo".to_string(),
		serde_json::Value::String("bar".to_string()),
	);
	cpt(
		from.to_string(),
		to.to_string(),
		serde_json::Value::Object(data),
	)?;

	do_assert(to)?;

	// Cleanup
	fs::remove_dir_all(&to)?;

	Ok(())
}

#[test]
fn cp_test() -> std::result::Result<(), Box<dyn std::error::Error>> {
	let from = "./templates/example";
	let to = "./templates/example_to_cp";

	cp(from.to_string(), to.to_string())?;

	let bar_path = format!("{}/bar.txt.tpl", to);

	assert_eq!(
		fs::read_to_string(bar_path)?.replace("\r\n", "\n"),
		"This will become bar: {{foo}}\nAnd this will stay as is: \\{{escaped}}\n"
	);

	let nontemp_path = format!("{}/foo/non-template.txt", to);

	assert_eq!(
		fs::read_to_string(nontemp_path)?.replace("\r\n", "\n"),
		"unused: {{unused}}"
	);

	// Cleanup
	fs::remove_dir_all(&to)?;

	Ok(())
}

#[test]
fn bin_test() -> std::result::Result<(), Box<dyn std::error::Error>> {
	let from = "./templates/example";
	let to = "./templates/example_to_bin";

	Command::cargo_bin("cpt")
		.unwrap()
		.args([from, to, "--json", r#"{ "foo": "bar" }"#])
		.assert()
		.success();

	do_assert(to)?;
	// Cleanup
	fs::remove_dir_all(&to)?;

	Ok(())
}