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node-red/test/unit/@node-red/runtime/lib/library/examples_spec.js

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/**
* Copyright JS Foundation and other contributors, http://js.foundation
*
* 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 sinon = require("sinon");
var fs = require("fs");
var NR_TEST_UTILS = require("nr-test-utils");
var examplesLibrary = NR_TEST_UTILS.require("@node-red/runtime/lib/library/examples")
var mockLog = {
log: sinon.stub(),
debug: sinon.stub(),
trace: sinon.stub(),
warn: sinon.stub(),
info: sinon.stub(),
metric: sinon.stub(),
audit: sinon.stub(),
_: function() { return "abc"}
}
describe("runtime/library/examples", function() {
describe("getEntry", function() {
before(function() {
examplesLibrary.init({
log: mockLog,
storage: {
getLibraryEntry: function(type,path) {
return Promise.resolve({type,path});
},
getFlow: function(path) {
return Promise.resolve({path});
}
},
nodes: {
getNodeExampleFlows: function() {
return {
"test-module": {
f: ["abc"]
},
"@scope/test-module": {
f: ["abc","throw"]
}
}
},
getNodeExampleFlowPath: function(module,entryPath) {
if (module === "unknown") {
return null;
}
return "/tmp/"+module+"/"+entryPath;
}
}
});
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sinon.stub(fs,"readFile").callsFake(function(path,opts,callback) {
if (path === "/tmp/test-module/abc") {
callback(null,"Example flow result");
} else if (path === "/tmp/@scope/test-module/abc") {
callback(null,"Example scope flow result");
} else if (path === "/tmp/test-module/throw") {
throw new Error("Instant error")
} else {
callback(new Error("Unexpected path:"+path))
}
})
});
after(function() {
fs.readFile.restore();
})
it ('returns a flow example entry', function(done) {
examplesLibrary.getEntry("flows","test-module/abc").then(function(result) {
result.should.eql("Example flow result");
done();
}).catch(done);
});
it ('returns a flow example listing - top level', function(done) {
examplesLibrary.getEntry("flows","").then(function(result) {
result.should.eql([ 'test-module', '@scope/test-module' ])
done();
}).catch(done);
});
it ('returns a flow example listing - in module', function(done) {
examplesLibrary.getEntry("flows","test-module").then(function(result) {
result.should.eql([{ fn: 'abc' }])
done();
}).catch(done);
});
it ('returns a flow example listing - in scoped module', function(done) {
examplesLibrary.getEntry("flows","@scope/test-module").then(function(result) {
result.should.eql([{ fn: 'abc' }, {fn: 'throw'}])
done();
}).catch(done);
});
it ('returns a flow example entry from scoped module', function(done) {
examplesLibrary.getEntry("flows","@scope/test-module/abc").then(function(result) {
result.should.eql("Example scope flow result");
done();
}).catch(done);
});
it ('returns an error for unknown flow example entry', function(done) {
examplesLibrary.getEntry("flows","unknown/abc").then(function(result) {
done(new Error("No error thrown"))
}).catch(function(err) {
err.should.have.property("code","not_found");
done();
});
});
it ('returns an error for file load error - async', function(done) {
examplesLibrary.getEntry("flows","test-module/unknown").then(function(result) {
done(new Error("No error thrown"))
}).catch(function(err) {
done();
});
});
it ('returns an error for file load error - sync', function(done) {
examplesLibrary.getEntry("flows","test-module/throw").then(function(result) {
done(new Error("No error thrown"))
}).catch(function(err) {
done();
});
});
});
});