Add tests for project changed state.

test/unit/project_load_changed_state.js

@@ -0,0 +1,30 @@
+const tap = require('tap');
+const path = require('path');
+const readFileToBuffer = require('../fixtures/readProjectFile').readFileToBuffer;
+const makeTestStorage = require('../fixtures/make-test-storage');
+const VirtualMachine = require('../../src/virtual-machine');
+
+tap.tearDown(() => process.nextTick(process.exit));
+
+const test = tap.test;
+
+// Test that loading a project does not emit a project change
+// This is in its own file so that it does not affect the test setup
+// and results of the other project changed state tests
+test('Loading a project should not emit a project changed event', t => {
+    const projectUri = path.resolve(__dirname, '../fixtures/default.sb2');
+    const project = readFileToBuffer(projectUri);
+
+    const vm = new VirtualMachine();
+
+    let projectChanged = false;
+    vm.runtime.addListener('PROJECT_CHANGED', () => {
+        projectChanged = true;
+    });
+
+    vm.attachStorage(makeTestStorage());
+    return vm.loadProject(project).then(() => {
+        t.equal(projectChanged, false);
+        t.end();
+    });
+});