add integration tests

tests/cmd_line_basic.rs

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+// Copyright 2020 Revcore Technologies Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Test wallet command line works as expected
+#[macro_use]
+extern crate clap;
+
+#[macro_use]
+extern crate log;
+
+use aloevera::Error;
+
+mod common;
+use common::{clean_output_dir, execute_command, setup};
+
+#[test]
+fn command_line_basic() -> Result<(), Error> {
+	let test_dir = "target/test_output/command_line_basic";
+	setup(test_dir);
+	let project_file = format!("{}/testproject.av", test_dir);
+	load_app!(app);
+
+	// Create Project
+	let arg_vec = vec!["aloevera", "create", "project", &project_file];
+	execute_command(&app, arg_vec)?;
+
+	// Import palette
+	let arg_vec = vec![
+		"aloevera",
+		"-p",
+		&project_file,
+		"palette",
+		"import",
+		"tile_wall_pal",
+		"tests/data/input/imageset-4bpp.png",
+	];
+	execute_command(&app, arg_vec)?;
+
+	// Output palette and check formats
+	let arg_vec = vec![
+		"aloevera",
+		"-p",
+		&project_file,
+		"asm",
+		"-f",
+		"bin",
+		"tests/data/input/imageset-4bpp.png",
+	];
+	execute_command(&app, arg_vec)?;
+
+	clean_output_dir(test_dir);
+	Ok(())
+}

tests/common/mod.rs

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+// Copyright 2020 Revcore Technologies Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Common functions for integration tests
+use clap::App;
+use std::fs;
+
+use aloevera::cmd;
+use aloevera::Error;
+use aloevera_util as util;
+
+pub fn clean_output_dir(test_dir: &str) {
+	let _ = fs::remove_dir_all(test_dir);
+}
+
+pub fn setup(test_dir: &str) {
+	util::init_test_logger();
+	clean_output_dir(test_dir);
+	let _ = fs::create_dir_all(test_dir);
+}
+
+pub fn execute_command(app: &App, arg_vec: Vec<&str>) -> Result<String, Error> {
+	let args = app.clone().get_matches_from(arg_vec);
+	cmd::execute::execute_command(&args)
+}
+
+#[macro_export]
+macro_rules! load_app {
+	($app: ident) => {
+		let yml = load_yaml!("../src/bin/aloevera.yml");
+		let $app = clap::App::from_yaml(yml);
+	};
+}