kara/test/plugin-test.js

A third generation EX-400 android

var assert = require("chai").assert,
    path   = require("path"),
    Kara   = require("../kara");

describe("Kara plugins", function(){

  var k;

  beforeEach(function() {
    k = new Kara({plugins: {loadPath: "./test/fixtures/plugins"}});
  });

  it("can load a plugin", function() {
    var plugin = k.loadPlugin("hello-world");
    assert.strictEqual(k.plugins["hello-world"].enabled,  false);
    assert.strictEqual(k.plugins["hello-world"].filename, "./test/fixtures/plugins/hello-world.js");
    assert.strictEqual(typeof(plugin),                    "object");
    assert.strictEqual(plugin.constructor.name,           "HelloWorld");
  });

  it("cannot load an unknown plugin", function() {
    assert.throws(function() {
      k.loadPlugin("unknown");
    });
  });

  it("cannot load an already loaded plugin", function() {
    assert.throws(function() {
      k.loadPlugin("hello-world");
      k.loadPlugin("hello-world");
    });
  });

  it("can unload a plugin", function() {
    k.loadPlugin("hello-world");
    assert.ok("hello-world" in k.plugins);
    k.unloadPlugin("hello-world");
    assert.notOk("hello-world" in k.plugins);
  });

  it(".unload should remove plugin from require.cache", function() {
    var absolutePath = path.resolve(__dirname, "./fixtures/plugins/hello-world.js");
    delete require.cache[absolutePath];
    assert.notOk(absolutePath in require.cache);

    k.loadPlugin("hello-world");
    assert.ok(absolutePath in require.cache);

    k.unloadPlugin("hello-world");
    assert.notOk(absolutePath in require.cache);
  });

  it("cannot .unload an unknown plugin", function() {
    assert.throws(function() {
      k.unloadPlugin("unknown");
    });
  });

  it(".enable should attach listeners", function() {
    k.loadPlugin("hello-world");
    assert.strictEqual(k.listeners("msg:direct").length, 0);
    k.enablePlugin("hello-world");
    assert.strictEqual(k.listeners("msg:direct").length, 1);
  });

  it("cannot .enable an enabled plugin", function() {
    k.loadPlugin("hello-world");
    k.enablePlugin("hello-world");
    assert.strictEqual(k.listeners("msg:direct").length, 1);
    k.enablePlugin("hello-world");
    assert.strictEqual(k.listeners("msg:direct").length, 1);
  });

  it("cannot .enable an unknown plugin", function() {
    assert.throws(function() {
      k.enablePlugin("unknown");
    });
  });

  it(".disable should remove listeners", function() {
    k.loadPlugin("hello-world");
    k.enablePlugin("hello-world");
    assert.strictEqual(k.listeners("msg:direct").length, 1);
    k.disablePlugin("hello-world");
    assert.strictEqual(k.listeners("msg:direct").length, 0);
  });

  it("cannot .disable a disabled plugin", function() {
    k.loadPlugin("hello-world");
    assert.doesNotThrow(function() {
      k.disablePlugin("hello-world");
      k.disablePlugin("hello-world");
    });
  });

  it("cannot .disable an unknown plugin", function() {
    assert.throws(function() {
      k.disablePlugin("unknown");
    });
  });

});