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node-red/test/red/runtime/util_spec.js

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/**
* Copyright JS Foundation and other contributors, http://js.foundation
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*
* 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.
**/
var should = require("should");
var util = require("../../../red/runtime/util");
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describe("red/util", function() {
describe('generateId', function() {
it('generates an id', function() {
var id = util.generateId();
var id2 = util.generateId();
id.should.not.eql(id2);
});
});
describe('compareObjects', function() {
it('numbers', function() {
util.compareObjects(0,0).should.equal(true);
util.compareObjects(0,1).should.equal(false);
util.compareObjects(1000,1001).should.equal(false);
util.compareObjects(1000,1000).should.equal(true);
util.compareObjects(0,"0").should.equal(false);
util.compareObjects(1,"1").should.equal(false);
util.compareObjects(0,null).should.equal(false);
util.compareObjects(0,undefined).should.equal(false);
});
it('strings', function() {
util.compareObjects("","").should.equal(true);
util.compareObjects("a","a").should.equal(true);
util.compareObjects("",null).should.equal(false);
util.compareObjects("",undefined).should.equal(false);
});
it('arrays', function() {
util.compareObjects(["a"],["a"]).should.equal(true);
util.compareObjects(["a"],["a","b"]).should.equal(false);
util.compareObjects(["a","b"],["b"]).should.equal(false);
util.compareObjects(["a"],"a").should.equal(false);
util.compareObjects([[1],["a"]],[[1],["a"]]).should.equal(true);
util.compareObjects([[1],["a"]],[["a"],[1]]).should.equal(false);
});
it('objects', function() {
util.compareObjects({"a":1},{"a":1,"b":1}).should.equal(false);
util.compareObjects({"a":1,"b":1},{"a":1,"b":1}).should.equal(true);
util.compareObjects({"b":1,"a":1},{"a":1,"b":1}).should.equal(true);
});
it('Buffer', function() {
util.compareObjects(new Buffer("hello"),new Buffer("hello")).should.equal(true);
util.compareObjects(new Buffer("hello"),new Buffer("hello ")).should.equal(false);
util.compareObjects(new Buffer("hello"),"hello").should.equal(false);
});
});
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describe('ensureString', function() {
it('strings are preserved', function() {
util.ensureString('string').should.equal('string');
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});
it('Buffer is converted', function() {
var s = util.ensureString(new Buffer('foo'));
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s.should.equal('foo');
(typeof s).should.equal('string');
});
it('Object is converted to JSON', function() {
var s = util.ensureString({foo: "bar"});
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(typeof s).should.equal('string');
should.deepEqual(JSON.parse(s), {foo:"bar"});
});
it('stringifies other things', function() {
var s = util.ensureString(123);
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(typeof s).should.equal('string');
s.should.equal('123');
});
});
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describe('ensureBuffer', function() {
it('Buffers are preserved', function() {
var b = new Buffer('');
util.ensureBuffer(b).should.equal(b);
});
it('string is converted', function() {
var b = util.ensureBuffer('foo');
var expected = new Buffer('foo');
for (var i = 0; i < expected.length; i++) {
b[i].should.equal(expected[i]);
}
Buffer.isBuffer(b).should.equal(true);
});
it('Object is converted to JSON', function() {
var obj = {foo: "bar"}
var b = util.ensureBuffer(obj);
Buffer.isBuffer(b).should.equal(true);
should.deepEqual(JSON.parse(b), obj);
});
it('stringifies other things', function() {
var b = util.ensureBuffer(123);
Buffer.isBuffer(b).should.equal(true);
var expected = new Buffer('123');
for (var i = 0; i < expected.length; i++) {
b[i].should.equal(expected[i]);
}
});
});
describe('cloneMessage', function() {
it('clones a simple message', function() {
var msg = {string:"hi",array:[1,2,3],object:{a:1,subobject:{b:2}}};
var cloned = util.cloneMessage(msg);
cloned.should.eql(msg);
cloned.should.not.equal(msg);
cloned.array.should.not.equal(msg.string);
cloned.object.should.not.equal(msg.object);
cloned.object.subobject.should.not.equal(msg.object.subobject);
cloned.should.not.have.property("req");
cloned.should.not.have.property("res");
});
it('does not clone http req/res properties', function() {
var msg = {req:{a:1},res:{b:2}};
var cloned = util.cloneMessage(msg);
cloned.should.eql(msg);
cloned.should.not.equal(msg);
cloned.req.should.equal(msg.req);
cloned.res.should.equal(msg.res);
});
});
describe('getMessageProperty', function() {
it('retrieves a simple property', function() {
var v = util.getMessageProperty({a:"foo"},"msg.a");
v.should.eql("foo");
var v2 = util.getMessageProperty({a:"foo"},"a");
v2.should.eql("foo");
});
it('should return undefined if property does not exist', function() {
var v = util.getMessageProperty({a:"foo"},"msg.b");
should.not.exist(v);
});
it('should throw error if property parent does not exist', function() {
/*jshint immed: false */
(function() {
util.getMessageProperty({a:"foo"},"msg.a.b.c");
}).should.throw();
});
it('retrieves a property with array syntax', function() {
var v = util.getMessageProperty({a:["foo","bar"]},"msg.a[0]");
v.should.eql("foo");
var v2 = util.getMessageProperty({a:[null,{b:"foo"}]},"a[1].b");
v2.should.eql("foo");
var v3 = util.getMessageProperty({a:[[["foo"]]]},"a[0][0][0]");
v3.should.eql("foo");
});
});
describe('setMessageProperty', function() {
it('sets a property', function() {
var msg = {a:"foo"};
util.setMessageProperty(msg,"msg.a","bar");
msg.a.should.eql('bar');
});
it('sets a deep level property', function() {
var msg = {a:{b:{c:"foo"}}};
util.setMessageProperty(msg,"msg.a.b.c","bar");
msg.a.b.c.should.eql('bar');
});
it('creates missing parent properties by default', function() {
var msg = {a:{}};
util.setMessageProperty(msg,"msg.a.b.c","bar");
msg.a.b.c.should.eql('bar');
})
it('does not create missing parent properties', function() {
var msg = {a:{}};
util.setMessageProperty(msg,"msg.a.b.c","bar",false);
should.not.exist(msg.a.b);
})
it('deletes property if value is undefined', function() {
var msg = {a:{b:{c:"foo"}}};
util.setMessageProperty(msg,"msg.a.b.c",undefined);
should.not.exist(msg.a.b.c);
})
it('does not create missing parent properties if value is undefined', function() {
var msg = {a:{}};
util.setMessageProperty(msg,"msg.a.b.c",undefined);
should.not.exist(msg.a.b);
});
it('sets a property with array syntax', function() {
var msg = {a:{b:["foo",{c:["",""]}]}};
util.setMessageProperty(msg,"msg.a.b[1].c[1]","bar");
msg.a.b[1].c[1].should.eql('bar');
});
it('creates missing array elements - final property', function() {
var msg = {a:[]};
util.setMessageProperty(msg,"msg.a[2]","bar");
msg.a.should.have.length(3);
msg.a[2].should.eql("bar");
});
it('creates missing array elements - mid property', function() {
var msg = {};
util.setMessageProperty(msg,"msg.a[2].b","bar");
msg.a.should.have.length(3);
msg.a[2].b.should.eql("bar");
});
it('creates missing array elements - multi-arrays', function() {
var msg = {};
util.setMessageProperty(msg,"msg.a[2][2]","bar");
msg.a.should.have.length(3);
msg.a.should.be.instanceOf(Array);
msg.a[2].should.have.length(3);
msg.a[2].should.be.instanceOf(Array);
msg.a[2][2].should.eql("bar");
});
it('does not create missing array elements - final property', function() {
var msg = {a:{}};
util.setMessageProperty(msg,"msg.a.b[2]","bar",false);
should.not.exist(msg.a.b);
// check it has not been misinterpreted
msg.a.should.not.have.property("b[2]");
});
it('deletes property inside array if value is undefined', function() {
var msg = {a:[1,2,3]};
util.setMessageProperty(msg,"msg.a[1]",undefined);
msg.a.should.have.length(2);
msg.a[0].should.eql(1);
msg.a[1].should.eql(3);
})
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});
describe('evaluateNodeProperty', function() {
it('returns string',function() {
var result = util.evaluateNodeProperty('hello','str');
result.should.eql('hello');
});
it('returns number',function() {
var result = util.evaluateNodeProperty('0123','num');
result.should.eql(123);
});
it('returns evaluated json',function() {
var result = util.evaluateNodeProperty('{"a":123}','json');
result.should.eql({a:123});
});
it('returns regex',function() {
var result = util.evaluateNodeProperty('^abc$','re');
result.toString().should.eql("/^abc$/");
});
it('returns boolean',function() {
var result = util.evaluateNodeProperty('true','bool');
result.should.be.true();
result = util.evaluateNodeProperty('TrUe','bool');
result.should.be.true();
result = util.evaluateNodeProperty('false','bool');
result.should.be.false();
result = util.evaluateNodeProperty('','bool');
result.should.be.false();
});
it('returns date',function() {
var result = util.evaluateNodeProperty('','date');
(Date.now() - result).should.be.approximately(0,50);
});
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it('returns msg property',function() {
var result = util.evaluateNodeProperty('foo.bar','msg',{},{foo:{bar:"123"}});
result.should.eql("123");
});
it('returns flow property',function() {
var result = util.evaluateNodeProperty('foo.bar','flow',{
context:function() { return {
flow: { get: function(k) {
if (k === 'foo.bar') {
return '123';
} else {
return null;
}
}}
}}
},{});
result.should.eql("123");
});
it('returns global property',function() {
var result = util.evaluateNodeProperty('foo.bar','global',{
context:function() { return {
global: { get: function(k) {
if (k === 'foo.bar') {
return '123';
} else {
return null;
}
}}
}}
},{});
result.should.eql("123");
});
it('returns null', function() {
var result = util.evaluateNodeProperty(null,'null');
(result === null).should.be.true();
})
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describe('environment variable', function() {
before(function() {
process.env.NR_TEST_A = "foo";
process.env.NR_TEST_B = "${NR_TEST_A}";
})
after(function() {
delete process.env.NR_TEST_A;
delete process.env.NR_TEST_B;
})
it('returns an environment variable - NR_TEST_A', function() {
var result = util.evaluateNodeProperty('NR_TEST_A','env');
result.should.eql('foo');
});
it('returns an environment variable - ${NR_TEST_A}', function() {
var result = util.evaluateNodeProperty('${NR_TEST_A}','env');
result.should.eql('foo');
});
it('returns an environment variable - ${NR_TEST_A', function() {
var result = util.evaluateNodeProperty('${NR_TEST_A','env');
result.should.eql('');
});
it('returns an environment variable - foo${NR_TEST_A}bar', function() {
var result = util.evaluateNodeProperty('123${NR_TEST_A}456','env');
result.should.eql('123foo456');
});
it('returns an environment variable - foo${NR_TEST_B}bar', function() {
var result = util.evaluateNodeProperty('123${NR_TEST_B}456','env');
result.should.eql('123${NR_TEST_A}456');
});
});
});
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describe('normalisePropertyExpression', function() {
function testABC(input,expected) {
var result = util.normalisePropertyExpression(input);
// console.log("+",input);
// console.log(result);
result.should.eql(expected);
}
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function testInvalid(input) {
/*jshint immed: false */
(function() {
util.normalisePropertyExpression(input);
}).should.throw();
}
it('pass a.b.c',function() { testABC('a.b.c',['a','b','c']); })
it('pass a["b"]["c"]',function() { testABC('a["b"]["c"]',['a','b','c']); })
it('pass a["b"].c',function() { testABC('a["b"].c',['a','b','c']); })
it("pass a['b'].c",function() { testABC("a['b'].c",['a','b','c']); })
it("pass a[0].c",function() { testABC("a[0].c",['a',0,'c']); })
it("pass a.0.c",function() { testABC("a.0.c",['a',0,'c']); })
it("pass a['a.b[0]'].c",function() { testABC("a['a.b[0]'].c",['a','a.b[0]','c']); })
it("pass a[0][0][0]",function() { testABC("a[0][0][0]",['a',0,0,0]); })
it("pass '1.2.3.4'",function() { testABC("'1.2.3.4'",['1.2.3.4']); })
it("pass 'a.b'[1]",function() { testABC("'a.b'[1]",['a.b',1]); })
it("pass 'a.b'.c",function() { testABC("'a.b'.c",['a.b','c']); })
it('pass a.$b.c',function() { testABC('a.$b.c',['a','$b','c']); })
it('pass a["$b"].c',function() { testABC('a["$b"].c',['a','$b','c']); })
it('pass a._b.c',function() { testABC('a._b.c',['a','_b','c']); })
it('pass a["_b"].c',function() { testABC('a["_b"].c',['a','_b','c']); })
it("fail a'b'.c",function() { testInvalid("a'b'.c"); })
it("fail a['b'.c",function() { testInvalid("a['b'.c"); })
it("fail a[]",function() { testInvalid("a[]"); })
it("fail a]",function() { testInvalid("a]"); })
it("fail a[",function() { testInvalid("a["); })
it("fail a[0d]",function() { testInvalid("a[0d]"); })
it("fail a['",function() { testInvalid("a['"); })
it("fail a[']",function() { testInvalid("a[']"); })
it("fail a[0']",function() { testInvalid("a[0']"); })
it("fail a.[0]",function() { testInvalid("a.[0]"); })
it("fail [0]",function() { testInvalid("[0]"); })
it("fail a[0",function() { testInvalid("a[0"); })
it("fail a.",function() { testInvalid("a."); })
it("fail .a",function() { testInvalid(".a"); })
it("fail a. b",function() { testInvalid("a. b"); })
it("fail a.b",function() { testInvalid(" a.b"); })
it("fail a[0].[1]",function() { testInvalid("a[0].[1]"); })
it("fail a['']",function() { testInvalid("a['']"); })
it("fail 'a.b'c",function() { testInvalid("'a.b'c"); })
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it("fail <blank>",function() { testInvalid("");})
});
describe('normaliseNodeTypeName', function() {
function normalise(input, expected) {
var result = util.normaliseNodeTypeName(input);
result.should.eql(expected);
}
it('pass blank',function() { normalise("", "") });
it('pass ab1',function() { normalise("ab1", "ab1") });
it('pass AB1',function() { normalise("AB1", "aB1") });
it('pass a b 1',function() { normalise("a b 1", "aB1") });
it('pass a-b-1',function() { normalise("a-b-1", "aB1") });
it('pass ab1 ',function() { normalise(" ab1 ", "ab1") });
it('pass _a_b_1_',function() { normalise("_a_b_1_", "aB1") });
it('pass http request',function() { normalise("http request", "httpRequest") });
it('pass HttpRequest',function() { normalise("HttpRequest", "httpRequest") });
});
describe('prepareJSONataExpression', function() {
it('prepares an expression', function() {
var result = util.prepareJSONataExpression('payload',{});
result.should.have.property('evaluate');
result.should.have.property('assign');
result.should.have.property('_legacyMode', false);
});
it('prepares a legacyMode expression', function() {
var result = util.prepareJSONataExpression('msg.payload',{});
result.should.have.property('evaluate');
result.should.have.property('assign');
result.should.have.property('_legacyMode', true);
});
});
describe('evaluateJSONataExpression', function() {
it('evaluates an expression', function() {
var expr = util.prepareJSONataExpression('payload',{});
var result = util.evaluateJSONataExpression(expr,{payload:"hello"});
result.should.eql("hello");
});
it('evaluates a legacyMode expression', function() {
var expr = util.prepareJSONataExpression('msg.payload',{});
var result = util.evaluateJSONataExpression(expr,{payload:"hello"});
result.should.eql("hello");
});
it('accesses flow context from an expression', function() {
var expr = util.prepareJSONataExpression('$flowContext("foo")',{context:function() { return {flow:{get: function(key) { return {'foo':'bar'}[key]}}}}});
var result = util.evaluateJSONataExpression(expr,{payload:"hello"});
result.should.eql("bar");
});
it('handles non-existant flow context variable', function() {
var expr = util.prepareJSONataExpression('$flowContext("nonExistant")',{context:function() { return {flow:{get: function(key) { return {'foo':'bar'}[key]}}}}});
var result = util.evaluateJSONataExpression(expr,{payload:"hello"});
should.not.exist(result);
});
it('handles non-existant global context variable', function() {
var expr = util.prepareJSONataExpression('$globalContext("nonExistant")',{context:function() { return {global:{get: function(key) { return {'foo':'bar'}[key]}}}}});
var result = util.evaluateJSONataExpression(expr,{payload:"hello"});
should.not.exist(result);
});
it('handles async flow context access', function(done) {
var expr = util.prepareJSONataExpression('$flowContext("foo")',{context:function() { return {flow:{get: function(key,store,callback) { setTimeout(()=>{callback(null,{'foo':'bar'}[key])},10)}}}}});
util.evaluateJSONataExpression(expr,{payload:"hello"},function(err,value) {
try {
should.not.exist(err);
value.should.eql("bar");
done();
} catch(err2) {
done(err2);
}
});
})
it('handles async global context access', function(done) {
var expr = util.prepareJSONataExpression('$globalContext("foo")',{context:function() { return {global:{get: function(key,store,callback) { setTimeout(()=>{callback(null,{'foo':'bar'}[key])},10)}}}}});
util.evaluateJSONataExpression(expr,{payload:"hello"},function(err,value) {
try {
should.not.exist(err);
value.should.eql("bar");
done();
} catch(err2) {
done(err2);
}
});
})
it('handles persistable store in flow context access', function(done) {
var storeName;
var expr = util.prepareJSONataExpression('$flowContext("foo", "flowStoreName")',{context:function() { return {flow:{get: function(key,store,callback) { storeName = store;setTimeout(()=>{callback(null,{'foo':'bar'}[key])},10)}}}}});
util.evaluateJSONataExpression(expr,{payload:"hello"},function(err,value) {
try {
should.not.exist(err);
value.should.eql("bar");
storeName.should.equal("flowStoreName");
done();
} catch(err2) {
done(err2);
}
});
})
it('handles persistable store in global context access', function(done) {
var storeName;
var expr = util.prepareJSONataExpression('$globalContext("foo", "globalStoreName")',{context:function() { return {global:{get: function(key,store,callback) { storeName = store;setTimeout(()=>{callback(null,{'foo':'bar'}[key])},10)}}}}});
util.evaluateJSONataExpression(expr,{payload:"hello"},function(err,value) {
try {
should.not.exist(err);
value.should.eql("bar");
storeName.should.equal("globalStoreName");
done();
} catch(err2) {
done(err2);
}
});
})
});
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});