fix(frontend): hide task form after creating new project task

frontend/app/projects/controller.js

@@ -98,6 +98,7 @@ export default class ProjectsController extends Controller {
     }
 
     this.fetchTasksByProject.perform(this.selectedProject);
+    this.selectedTask = undefined;
   }
 
   @dropTask

frontend/tests/acceptance/project-test.js

@@ -72,6 +72,8 @@ module("Acceptance | projects", function (hooks) {
     assert.dom("[data-test-task-form]").exists();
     assert.dom("[data-test-save]").isDisabled();
 
+    assert.dom("[data-test-name]").exists();
+    assert.dom("[data-test-name]").isVisible();
     await fillIn("[data-test-name]", "FooBar Task 1");
     assert.dom("[data-test-save]").isNotDisabled();
 
@@ -80,9 +82,6 @@ module("Acceptance | projects", function (hooks) {
 
     await click("[data-test-save]");
 
-    assert.dom("[data-test-name]").hasValue("FooBar Task 1");
-    assert.dom("[data-test-reference]").hasValue("Reference of FooBar Task 1");
-    assert.dom("[data-test-estimated-time]").hasValue("02:15");
     assert.dom("[data-test-task-table-row]").exists({ count: 1 });
   });
 
@@ -116,7 +115,6 @@ module("Acceptance | projects", function (hooks) {
     await fillIn("[data-test-estimated-time]", "02:15");
 
     await click("[data-test-save]");
-    await click("[data-test-cancel]");
 
     assert.dom("[data-test-task-form]").doesNotExist();
     assert.dom("[data-test-table-name]").hasText("FooBar Task 1");
@@ -135,7 +133,6 @@ module("Acceptance | projects", function (hooks) {
     await click("[data-test-archived] input");
 
     await click("[data-test-save]");
-    await click("[data-test-cancel]");
 
     assert.dom("[data-test-task-form]").doesNotExist();
     assert.dom("[data-test-table-name]").hasText("FooBar Task 1 updated");
@@ -144,6 +141,34 @@ module("Acceptance | projects", function (hooks) {
     assert.dom("[data-test-table-archived]").hasClass("fa-square-check");
   });
 
+  test("The cancel button will hide the form", async function (assert) {
+    await visit("/projects");
+    assert.strictEqual(currentURL(), "/projects");
+
+    await selectChoose(
+      "[data-test-customer-selection]",
+      ".ember-power-select-option",
+      0
+    );
+
+    await selectChoose(
+      "[data-test-project-selection]",
+      ".ember-power-select-option",
+      0
+    );
+
+    assert.dom("[data-test-add-task]").exists();
+    assert.dom("[data-test-task-table-row]").doesNotExist();
+
+    await click("[data-test-add-task]");
+    assert.dom("[data-test-task-form]").exists();
+    assert.dom("[data-test-save]").isDisabled();
+
+    await click("[data-test-cancel]");
+
+    assert.dom("[data-test-task-form]").doesNotExist();
+  });
+
   test("shows all customers to superuser", async function (assert) {
     const user = this.server.create("user", { isSuperuser: true });
     this.server.create("project");