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var test = require('tape');
var parse = require('../').parse;

test('expand environment variables', function (t) {
    t.same(parse('a $XYZ c', { XYZ: 'b' }), [ 'a', 'b', 'c' ]);
    t.same(parse('a${XYZ}c', { XYZ: 'b' }), [ 'abc' ]);
    t.same(parse('a${XYZ}c $XYZ', { XYZ: 'b' }), [ 'abc', 'b' ]);
    t.same(parse('"-$X-$Y-"', { X: 'a', Y: 'b' }), [ '-a-b-' ]);
    t.same(parse("'-$X-$Y-'", { X: 'a', Y: 'b' }), [ '-$X-$Y-' ]);
    t.same(parse('qrs"$zzz"wxy', { zzz: 'tuv' }), [ 'qrstuvwxy' ]);
    t.same(parse("qrs'$zzz'wxy", { zzz: 'tuv' }), [ 'qrs$zzzwxy' ]);
    t.same(parse("qrs${zzz}wxy"), [ 'qrswxy' ]);
    t.same(parse("qrs$wxy $"), [ 'qrs', '$' ]);
    t.same(parse('grep "xy$"'), [ 'grep', 'xy$' ]);
    t.same(parse("ab$x", { x: 'c' }), [ 'abc' ]);
    t.same(parse("ab\\$x", { x: 'c' }), [ 'ab$x' ]);
    t.same(parse("ab${x}def", { x: 'c' }), [ 'abcdef' ]);
    t.same(parse("ab\\${x}def", { x: 'c' }), [ 'ab${x}def' ]);
    t.same(parse('"ab\\${x}def"', { x: 'c' }), [ 'ab${x}def' ]);
    
    t.end();
});

test('environment variables with metacharacters', function (t) {
    t.same(parse('a $XYZ c', { XYZ: '"b"' }), [ 'a', '"b"', 'c' ]);
    t.same(parse('a $XYZ c', { XYZ: '$X', X: 5 }), [ 'a', '$X', 'c' ]);
    t.same(parse('a"$XYZ"c', { XYZ: "'xyz'" }), [ "a'xyz'c" ]);
    
    t.end();
});

test('special shell parameters', function (t) {
    var chars = '*@#?-$!0_'.split('');
    t.plan(chars.length);
    
    chars.forEach(function (c) {
        var env = {};
        env[c] = 'xxx';
        t.same(parse('a $' + c + ' c', env), [ 'a', 'xxx', 'c' ]);
    });
});