mirror of
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88 lines
2.5 KiB
JavaScript
88 lines
2.5 KiB
JavaScript
// test Scope
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var assert = require('assert'),
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approx = require('../../tools/approx.js'),
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math = require('../../src/index.js'),
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Scope = math.expr.Scope;
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var scope1 = new Scope();
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var scope2 = new Scope(scope1);
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var symbols3 = {myvar: 3};
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var scope3 = new Scope(scope2, symbols3);
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assert.equal(scope1.get('sin'), math.sin);
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assert.equal(scope3.get('sin'), math.sin);
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assert.equal(scope3.get('myvar'), 3);
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assert.equal(scope2.get('myvar'), undefined);
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assert.equal(scope1.get('myvar'), undefined);
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scope3.set('d', 4);
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assert.equal(scope3.get('d'), 4);
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assert.equal(symbols3['d'], 4);
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assert.equal(scope2.get('d'), undefined);
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symbols3['pi'] = 3;
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assert.equal(scope3.get('pi'), 3);
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approx.equal(scope2.get('pi'), Math.PI);
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approx.equal(scope1.get('pi'), Math.PI);
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var symbols4 = {e: 5};
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var scope4 = new Scope(symbols4);
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assert.equal(scope4.get('myvar'), undefined);
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assert.equal(scope4.get('e'), 5);
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scope4.clear();
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approx.equal(scope4.get('e'), Math.E);
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assert.equal(symbols4['e'], undefined);
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// test sub scope
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var value5 = {
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'aaa': 'bbb'
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};
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var scope5 = new Scope();
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scope5.set('value5', value5);
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var sub5 = scope5.createSubScope();
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assert.equal(scope5.get('value5'), value5);
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assert.equal(sub5.get('value5'), value5);
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sub5.set('subValue5', 5);
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assert.equal(scope5.get('subValue5'), undefined);
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assert.equal(sub5.get('subValue5'), 5);
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// clear must clear a scope and its subscopes
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scope5.clear();
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assert.equal(scope5.get('value5'), undefined);
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assert.equal(sub5.get('value5'), undefined);
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assert.equal(scope5.get('subValue5'), undefined);
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assert.equal(sub5.get('subValue5'), undefined);
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// test remove
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var symbols6 = {
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aa: 'aa',
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bb: 'bb',
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cc: 'cc'
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};
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var scope6 = new Scope(symbols6);
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assert.equal(scope6.get('aa'), 'aa');
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assert.equal(scope6.get('bb'), 'bb');
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assert.equal(scope6.get('cc'), 'cc');
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scope6.remove('bb');
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assert.equal(scope6.get('aa'), 'aa');
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assert.equal(scope6.get('bb'), undefined);
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assert.equal(scope6.get('cc'), 'cc');
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assert.deepEqual(symbols6, {
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aa: 'aa',
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cc: 'cc'
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});
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// test cache
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var scope7 = new Scope();
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scope7.set('a', 123);
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assert.equal(scope7.get('a'), 123);
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var scope8 = new Scope(scope7);
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assert.equal(scope8.get('a'), 123);
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// 'a' is now in the cache of scope8, refering to scope7
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scope8.parentScope = null; // remove scope7 as parent
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assert.equal(scope8.get('a'), 123); // whoops! still in the cache
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scope8.clearCache(); // clear the cache of scope8
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assert.equal(scope8.get('a'), undefined); // ah, that's better
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