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node_modules/optimist/test/usage.js

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+var Hash = require('hashish');
+var optimist = require('../index');
+var test = require('tap').test;
+
+test('usageFail', function (t) {
+    var r = checkUsage(function () {
+        return optimist('-x 10 -z 20'.split(' '))
+            .usage('Usage: $0 -x NUM -y NUM')
+            .demand(['x','y'])
+            .argv;
+    });
+    t.same(
+        r.result,
+        { x : 10, z : 20, _ : [], $0 : './usage' }
+    );
+
+    t.same(
+        r.errors.join('\n').split(/\n+/),
+        [
+            'Usage: ./usage -x NUM -y NUM',
+            'Options:',
+            '  -x  [required]',
+            '  -y  [required]',
+            'Missing required arguments: y',
+        ]
+    );
+    t.same(r.logs, []);
+    t.ok(r.exit);
+    t.end();
+});
+
+
+test('usagePass', function (t) {
+    var r = checkUsage(function () {
+        return optimist('-x 10 -y 20'.split(' '))
+            .usage('Usage: $0 -x NUM -y NUM')
+            .demand(['x','y'])
+            .argv;
+    });
+    t.same(r, {
+        result : { x : 10, y : 20, _ : [], $0 : './usage' },
+        errors : [],
+        logs : [],
+        exit : false,
+    });
+    t.end();
+});
+
+test('checkPass', function (t) {
+    var r = checkUsage(function () {
+        return optimist('-x 10 -y 20'.split(' '))
+            .usage('Usage: $0 -x NUM -y NUM')
+            .check(function (argv) {
+                if (!('x' in argv)) throw 'You forgot about -x';
+                if (!('y' in argv)) throw 'You forgot about -y';
+            })
+            .argv;
+    });
+    t.same(r, {
+        result : { x : 10, y : 20, _ : [], $0 : './usage' },
+        errors : [],
+        logs : [],
+        exit : false,
+    });
+    t.end();
+});
+
+test('checkFail', function (t) {
+    var r = checkUsage(function () {
+        return optimist('-x 10 -z 20'.split(' '))
+            .usage('Usage: $0 -x NUM -y NUM')
+            .check(function (argv) {
+                if (!('x' in argv)) throw 'You forgot about -x';
+                if (!('y' in argv)) throw 'You forgot about -y';
+            })
+            .argv;
+    });
+
+    t.same(
+        r.result,
+        { x : 10, z : 20, _ : [], $0 : './usage' }
+    );
+
+    t.same(
+        r.errors.join('\n').split(/\n+/),
+        [
+            'Usage: ./usage -x NUM -y NUM',
+            'You forgot about -y'
+        ]
+    );
+
+    t.same(r.logs, []);
+    t.ok(r.exit);
+    t.end();
+});
+
+test('checkCondPass', function (t) {
+    function checker (argv) {
+        return 'x' in argv && 'y' in argv;
+    }
+
+    var r = checkUsage(function () {
+        return optimist('-x 10 -y 20'.split(' '))
+            .usage('Usage: $0 -x NUM -y NUM')
+            .check(checker)
+            .argv;
+    });
+    t.same(r, {
+        result : { x : 10, y : 20, _ : [], $0 : './usage' },
+        errors : [],
+        logs : [],
+        exit : false,
+    });
+    t.end();
+});
+
+test('checkCondFail', function (t) {
+    function checker (argv) {
+        return 'x' in argv && 'y' in argv;
+    }
+
+    var r = checkUsage(function () {
+        return optimist('-x 10 -z 20'.split(' '))
+            .usage('Usage: $0 -x NUM -y NUM')
+            .check(checker)
+            .argv;
+    });
+
+    t.same(
+        r.result,
+        { x : 10, z : 20, _ : [], $0 : './usage' }
+    );
+
+    t.same(
+        r.errors.join('\n').split(/\n+/).join('\n'),
+        'Usage: ./usage -x NUM -y NUM\n'
+        + 'Argument check failed: ' + checker.toString()
+    );
+
+    t.same(r.logs, []);
+    t.ok(r.exit);
+    t.end();
+});
+
+test('countPass', function (t) {
+    var r = checkUsage(function () {
+        return optimist('1 2 3 --moo'.split(' '))
+            .usage('Usage: $0 [x] [y] [z] {OPTIONS}')
+            .demand(3)
+            .argv;
+    });
+    t.same(r, {
+        result : { _ : [ '1', '2', '3' ], moo : true, $0 : './usage' },
+        errors : [],
+        logs : [],
+        exit : false,
+    });
+    t.end();
+});
+
+test('countFail', function (t) {
+    var r = checkUsage(function () {
+        return optimist('1 2 --moo'.split(' '))
+            .usage('Usage: $0 [x] [y] [z] {OPTIONS}')
+            .demand(3)
+            .argv;
+    });
+    t.same(
+        r.result,
+        { _ : [ '1', '2' ], moo : true, $0 : './usage' }
+    );
+
+    t.same(
+        r.errors.join('\n').split(/\n+/),
+        [
+            'Usage: ./usage [x] [y] [z] {OPTIONS}',
+            'Not enough non-option arguments: got 2, need at least 3',
+        ]
+    );
+
+    t.same(r.logs, []);
+    t.ok(r.exit);
+    t.end();
+});
+
+test('defaultSingles', function (t) {
+    var r = checkUsage(function () {
+        return optimist('--foo 50 --baz 70 --powsy'.split(' '))
+            .default('foo', 5)
+            .default('bar', 6)
+            .default('baz', 7)
+            .argv
+        ;
+    });
+    t.same(r.result, {
+        foo : '50',
+        bar : 6,
+        baz : '70',
+        powsy : true,
+        _ : [],
+        $0 : './usage',
+    });
+    t.end();
+});
+
+test('defaultAliases', function (t) {
+    var r = checkUsage(function () {
+        return optimist('')
+            .alias('f', 'foo')
+            .default('f', 5)
+            .argv
+        ;
+    });
+    t.same(r.result, {
+        f : '5',
+        foo : '5',
+        _ : [],
+        $0 : './usage',
+    });
+    t.end();
+});
+
+test('defaultHash', function (t) {
+    var r = checkUsage(function () {
+        return optimist('--foo 50 --baz 70'.split(' '))
+            .default({ foo : 10, bar : 20, quux : 30 })
+            .argv
+        ;
+    });
+    t.same(r.result, {
+        _ : [],
+        $0 : './usage',
+        foo : 50,
+        baz : 70,
+        bar : 20,
+        quux : 30,
+    });
+    t.end();
+});
+
+test('rebase', function (t) {
+    t.equal(
+        optimist.rebase('/home/substack', '/home/substack/foo/bar/baz'),
+        './foo/bar/baz'
+    );
+    t.equal(
+        optimist.rebase('/home/substack/foo/bar/baz', '/home/substack'),
+        '../../..'
+    );
+    t.equal(
+        optimist.rebase('/home/substack/foo', '/home/substack/pow/zoom.txt'),
+        '../pow/zoom.txt'
+    );
+    t.end();
+});
+
+function checkUsage (f) {
+
+    var exit = false;
+
+    process._exit = process.exit;
+    process._env = process.env;
+    process._argv = process.argv;
+
+    process.exit = function (t) { exit = true };
+    process.env = Hash.merge(process.env, { _ : 'node' });
+    process.argv = [ './usage' ];
+
+    var errors = [];
+    var logs = [];
+
+    console._error = console.error;
+    console.error = function (msg) { errors.push(msg) };
+    console._log = console.log;
+    console.log = function (msg) { logs.push(msg) };
+
+    var result = f();
+
+    process.exit = process._exit;
+    process.env = process._env;
+    process.argv = process._argv;
+
+    console.error = console._error;
+    console.log = console._log;
+
+    return {
+        errors : errors,
+        logs : logs,
+        exit : exit,
+        result : result,
+    };
+};