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#! /usr/bin/env node
var U = require("../tools/node");
var path = require("path");
var fs = require("fs");
var assert = require("assert");
var sys = require("util");
var tests_dir = path.dirname(module.filename);
run_compress_tests();
/* -----[ utils ]----- */
function tmpl() {
return U.string_template.apply(this, arguments);
}
function log() {
var txt = tmpl.apply(this, arguments);
sys.puts(txt);
}
function log_directory(dir) {
log("*** Entering [{dir}]", { dir: dir });
}
function log_start_file(file) {
log("--- {file}", { file: file });
}
function log_test(name) {
log(" Running test [{name}]", { name: name });
}
function find_test_files(dir) {
var files = fs.readdirSync(dir).filter(function(name){
return /\.js$/i.test(name);
});
if (process.argv.length > 2) {
var x = process.argv.slice(2);
files = files.filter(function(f){
return x.indexOf(f) >= 0;
});
}
return files;
}
function test_directory(dir) {
return path.resolve(tests_dir, dir);
}
function as_toplevel(input) {
if (input instanceof U.AST_BlockStatement) input = input.body;
else if (input instanceof U.AST_Statement) input = [ input ];
else throw new Error("Unsupported input syntax");
var toplevel = new U.AST_Toplevel({ body: input });
toplevel.figure_out_scope();
return toplevel;
}
function run_compress_tests() {
var dir = test_directory("compress");
log_directory("compress");
var files = find_test_files(dir);
function test_file(file) {
log_start_file(file);
function test_case(test) {
log_test(test.name);
var options = U.defaults(test.options, {
warnings: false
});
var cmp = new U.Compressor(options, true);
var expect = make_code(as_toplevel(test.expect), false);
var input = as_toplevel(test.input);
var output = input.transform(cmp);
output.figure_out_scope();
output = make_code(output, false);
if (expect != output) {
log("!!! failed\n---INPUT---\n{input}\n---OUTPUT---\n{output}\n---EXPECTED---\n{expected}\n\n", {
input: make_code(test.input),
output: output,
expected: expect
});
}
}
var tests = parse_test(path.resolve(dir, file));
for (var i in tests) if (tests.hasOwnProperty(i)) {
test_case(tests[i]);
}
}
files.forEach(function(file){
test_file(file);
});
}
function parse_test(file) {
var script = fs.readFileSync(file, "utf8");
var ast = U.parse(script, {
filename: file
});
var tests = {};
var tw = new U.TreeWalker(function(node, descend){
if (node instanceof U.AST_LabeledStatement
&& tw.parent() instanceof U.AST_Toplevel) {
var name = node.label.name;
tests[name] = get_one_test(name, node.body);
return true;
}
if (!(node instanceof U.AST_Toplevel)) croak(node);
});
ast.walk(tw);
return tests;
function croak(node) {
throw new Error(tmpl("Can't understand test file {file} [{line},{col}]\n{code}", {
file: file,
line: node.start.line,
col: node.start.col,
code: make_code(node, false)
}));
}
function get_one_test(name, block) {
var test = { name: name, options: {} };
var tw = new U.TreeWalker(function(node, descend){
if (node instanceof U.AST_Assign) {
if (!(node.left instanceof U.AST_SymbolRef)) {
croak(node);
}
var name = node.left.name;
test[name] = evaluate(node.right);
return true;
}
if (node instanceof U.AST_LabeledStatement) {
assert.ok(
node.label.name == "input" || node.label.name == "expect",
tmpl("Unsupported label {name} [{line},{col}]", {
name: node.label.name,
line: node.label.start.line,
col: node.label.start.col
})
);
var stat = node.body;
if (stat instanceof U.AST_BlockStatement) {
if (stat.body.length == 1) stat = stat.body[0];
else if (stat.body.length == 0) stat = new U.AST_EmptyStatement();
}
test[node.label.name] = stat;
return true;
}
});
block.walk(tw);
return test;
};
}
function make_code(ast, beautify) {
if (arguments.length == 1) beautify = true;
var stream = U.OutputStream({ beautify: beautify });
ast.print(stream);
return stream.get();
}
function evaluate(code) {
if (code instanceof U.AST_Node)
code = make_code(code);
return new Function("return(" + code + ")")();
}
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