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node-red/test/unit/@node-red/registry/lib/externalModules_spec.js

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// init: init,
// register: register,
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// registerSubflow: registerSubflow,
// checkFlowDependencies: checkFlowDependencies,
// require: requireModule
//
const should = require("should");
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const sinon = require("sinon");
const fs = require("fs-extra");
const path = require("path");
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const os = require("os");
const NR_TEST_UTILS = require("nr-test-utils");
const externalModules = NR_TEST_UTILS.require("@node-red/registry/lib/externalModules");
const exec = NR_TEST_UTILS.require("@node-red/util/lib/exec");
const hooks = NR_TEST_UTILS.require("@node-red/util/lib/hooks");
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let homeDir;
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async function createUserDir() {
if (!homeDir) {
homeDir = path.join(os.tmpdir(),"nr-test-"+Math.floor(Math.random()*100000));
}
await fs.ensureDir(homeDir);
}
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async function setupExternalModulesPackage(dependencies) {
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await fs.writeFile(path.join(homeDir,"package.json"),`{
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"name": "Node-RED-External-Modules",
"description": "These modules are automatically installed by Node-RED to use in Function nodes.",
"version": "1.0.0",
"private": true,
"dependencies": ${JSON.stringify(dependencies)}
}`)
}
describe("externalModules api", function() {
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beforeEach(async function() {
await createUserDir()
})
afterEach(async function() {
hooks.clear();
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await fs.remove(homeDir);
})
describe("checkFlowDependencies", function() {
beforeEach(function() {
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sinon.stub(exec,"run").callsFake(async function(cmd, args, options) {
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let error;
let moduleName = args[args.length-1];
if (moduleName === "moduleNotFound") {
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error = new Error();
error.stderr = "E404";
} else if (moduleName === "moduleVersionNotFound") {
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error = new Error();
error.stderr = "ETARGET";
} else if (moduleName === "moduleFail") {
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error = new Error();
error.stderr = "Some unexpected install error";
}
if (error) {
throw error;
}
})
})
afterEach(function() {
exec.run.restore();
})
it("does nothing when no types are registered",async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
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await externalModules.checkFlowDependencies([
{type: "function", libs:[{module: "foo"}]}
])
exec.run.called.should.be.false();
});
it("skips install for modules already installed", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
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externalModules.register("function", "libs");
await setupExternalModulesPackage({"foo": "1.2.3", "bar":"2.3.4"});
await externalModules.checkFlowDependencies([
{type: "function", libs:[{module: "foo"}]}
])
exec.run.called.should.be.false();
})
it("skips install for built-in modules", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
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externalModules.register("function", "libs");
await externalModules.checkFlowDependencies([
{type: "function", libs:[{module: "fs"}]}
])
exec.run.called.should.be.false();
})
it("installs missing modules", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
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externalModules.register("function", "libs");
await externalModules.checkFlowDependencies([
{type: "function", libs:[{module: "foo"}]}
])
exec.run.called.should.be.true();
})
it("calls pre/postInstall hooks", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
externalModules.register("function", "libs");
let receivedPreEvent,receivedPostEvent;
hooks.add("preInstall", function(event) { event.args = ["a"]; receivedPreEvent = event; })
hooks.add("postInstall", function(event) { receivedPostEvent = event; })
await externalModules.checkFlowDependencies([
{type: "function", libs:[{module: "foo"}]}
])
exec.run.called.should.be.true();
// exec.run.lastCall.args[1].should.eql([ 'install', 'a', 'foo' ]);
receivedPreEvent.should.have.property("module","foo")
receivedPreEvent.should.have.property("version")
receivedPreEvent.should.have.property("dir")
receivedPreEvent.should.eql(receivedPostEvent)
})
it("skips npm install if preInstall returns false", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
externalModules.register("function", "libs");
let receivedPreEvent,receivedPostEvent;
hooks.add("preInstall", function(event) { receivedPreEvent = event; return false })
hooks.add("postInstall", function(event) { receivedPostEvent = event; })
await externalModules.checkFlowDependencies([
{type: "function", libs:[{module: "foo"}]}
])
exec.run.called.should.be.false();
receivedPreEvent.should.have.property("module","foo")
receivedPreEvent.should.have.property("version")
receivedPreEvent.should.have.property("dir")
receivedPreEvent.should.eql(receivedPostEvent)
})
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it("installs missing modules from inside subflow module", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
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externalModules.register("function", "libs");
externalModules.registerSubflow("sf", {"flow":[{type: "function", libs:[{module: "foo"}]}]});
await externalModules.checkFlowDependencies([
{type: "sf"}
])
exec.run.called.should.be.true();
})
it("reports install fail - 404", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
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externalModules.register("function", "libs");
try {
await externalModules.checkFlowDependencies([
{type: "function", libs:[{module: "moduleNotFound"}]}
])
throw new Error("checkFlowDependencies did not reject after install fail")
} catch(err) {
exec.run.called.should.be.true();
Array.isArray(err).should.be.true();
err.should.have.length(1);
err[0].should.have.property("module");
err[0].module.should.have.property("module","moduleNotFound");
err[0].should.have.property("error");
err[0].error.should.have.property("code",404);
}
})
it("reports install fail - target", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
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externalModules.register("function", "libs");
try {
await externalModules.checkFlowDependencies([
{type: "function", libs:[{module: "moduleVersionNotFound"}]}
])
throw new Error("checkFlowDependencies did not reject after install fail")
} catch(err) {
exec.run.called.should.be.true();
Array.isArray(err).should.be.true();
err.should.have.length(1);
err[0].should.have.property("module");
err[0].module.should.have.property("module","moduleVersionNotFound");
err[0].should.have.property("error");
err[0].error.should.have.property("code",404);
}
})
it("reports install fail - unexpected", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
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externalModules.register("function", "libs");
try {
await externalModules.checkFlowDependencies([
{type: "function", libs:[{module: "moduleFail"}]}
])
throw new Error("checkFlowDependencies did not reject after install fail")
} catch(err) {
exec.run.called.should.be.true();
Array.isArray(err).should.be.true();
err.should.have.length(1);
err[0].should.have.property("module");
err[0].module.should.have.property("module","moduleFail");
err[0].should.have.property("error");
err[0].error.should.have.property("code","unexpected_error");
}
})
it("reports install fail - multiple", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
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externalModules.register("function", "libs");
try {
await externalModules.checkFlowDependencies([
{type: "function", libs:[{module: "moduleNotFound"},{module: "moduleFail"}]}
])
throw new Error("checkFlowDependencies did not reject after install fail")
} catch(err) {
exec.run.called.should.be.true();
Array.isArray(err).should.be.true();
err.should.have.length(2);
// Sort the array so we know the order to test for
err.sort(function(A,B) {
return A.module.module.localeCompare(B.module.module);
})
err[1].should.have.property("module");
err[1].module.should.have.property("module","moduleNotFound");
err[1].should.have.property("error");
err[1].error.should.have.property("code",404);
err[0].should.have.property("module");
err[0].module.should.have.property("module","moduleFail");
err[0].should.have.property("error");
err[0].error.should.have.property("code","unexpected_error");
}
})
it("reports install fail - install disabled", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}, externalModules: {
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modules: {
allowInstall: false
}
}});
externalModules.register("function", "libs");
try {
await externalModules.checkFlowDependencies([
{type: "function", libs:[{module: "foo"}]}
])
throw new Error("checkFlowDependencies did not reject after install fail")
} catch(err) {
// Should not try to install
exec.run.called.should.be.false();
Array.isArray(err).should.be.true();
err.should.have.length(1);
err[0].should.have.property("module");
err[0].module.should.have.property("module","foo");
err[0].should.have.property("error");
err[0].error.should.have.property("code","install_not_allowed");
}
})
it("reports install fail - module disallowed", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}, externalModules: {
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modules: {
denyList: ['foo']
}
}});
externalModules.register("function", "libs");
try {
await externalModules.checkFlowDependencies([
// foo disallowed
// bar allowed
{type: "function", libs:[{module: "foo"},{module: "bar"}]}
])
throw new Error("checkFlowDependencies did not reject after install fail")
} catch(err) {
exec.run.calledOnce.should.be.true();
Array.isArray(err).should.be.true();
err.should.have.length(1);
err[0].should.have.property("module");
err[0].module.should.have.property("module","foo");
err[0].should.have.property("error");
err[0].error.should.have.property("code","install_not_allowed");
}
})
it("reports install fail - built-in module disallowed", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}, externalModules: {
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modules: {
denyList: ['fs']
}
}});
externalModules.register("function", "libs");
try {
await externalModules.checkFlowDependencies([
// foo disallowed
// bar allowed
{type: "function", libs:[{module: "fs"},{module: "bar"}]}
])
throw new Error("checkFlowDependencies did not reject after install fail")
} catch(err) {
exec.run.calledOnce.should.be.true();
Array.isArray(err).should.be.true();
err.should.have.length(1);
err[0].should.have.property("module");
err[0].module.should.have.property("module","fs");
err[0].should.have.property("error");
err[0].error.should.have.property("code","module_not_allowed");
}
})
})
describe("require", async function() {
it("requires built-in modules", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
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const result = externalModules.require("fs")
result.should.eql(require("fs"));
})
it("rejects unknown modules", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
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try {
externalModules.require("foo")
throw new Error("require did not reject after fail")
} catch(err) {
err.should.have.property("code","module_not_allowed");
}
})
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it("rejects disallowed modules", async function() {
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externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}, externalModules: {
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modules: {
denyList: ['fs']
}
}});
try {
externalModules.require("fs")
throw new Error("require did not reject after fail")
} catch(err) {
err.should.have.property("code","module_not_allowed");
}
})
})
describe("import", async function() {
it("import built-in modules", async function() {
externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
const result = await externalModules.import("fs")
// `result` won't have the `should` property
should.exist(result);
should.exist(result.existsSync);
})
it("rejects unknown modules", async function() {
externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}});
try {
await externalModules.import("foo")
throw new Error("import did not reject after fail")
} catch(err) {
err.should.have.property("code","module_not_allowed");
}
})
it("rejects disallowed modules", async function() {
externalModules.init({userDir: homeDir, get:()=>{}, set:()=>{}, externalModules: {
modules: {
denyList: ['fs']
}
}});
try {
await externalModules.import("fs")
throw new Error("import did not reject after fail")
} catch(err) {
err.should.have.property("code","module_not_allowed");
}
})
})
});