Component Library scaffolding (#625)

components/src/button/button.component.spec.ts

@@ -0,0 +1,57 @@
+import { Component } from "@angular/core";
+import { TestBed, waitForAsync } from "@angular/core/testing";
+import { By } from "@angular/platform-browser";
+
+import { ButtonModule } from "./index";
+
+describe("Button", () => {
+  beforeEach(
+    waitForAsync(() => {
+      TestBed.configureTestingModule({
+        imports: [ButtonModule],
+        declarations: [TestApp],
+      });
+
+      TestBed.compileComponents();
+    })
+  );
+
+  it("should apply classes based on type", () => {
+    const fixture = TestBed.createComponent(TestApp);
+
+    const testAppComponent: TestApp = fixture.debugElement.componentInstance;
+    const buttonDebugElement = fixture.debugElement.query(By.css("button"));
+    const linkDebugElement = fixture.debugElement.query(By.css("a"));
+
+    testAppComponent.buttonType = "primary";
+    fixture.detectChanges();
+    expect(buttonDebugElement.nativeElement.classList.contains("tw-bg-primary-500")).toBe(true);
+    expect(linkDebugElement.nativeElement.classList.contains("tw-bg-primary-500")).toBe(true);
+
+    testAppComponent.buttonType = "secondary";
+    fixture.detectChanges();
+    expect(buttonDebugElement.nativeElement.classList.contains("tw-border-text-muted")).toBe(true);
+    expect(linkDebugElement.nativeElement.classList.contains("tw-border-text-muted")).toBe(true);
+
+    testAppComponent.buttonType = "danger";
+    fixture.detectChanges();
+    expect(buttonDebugElement.nativeElement.classList.contains("tw-border-danger-500")).toBe(true);
+    expect(linkDebugElement.nativeElement.classList.contains("tw-border-danger-500")).toBe(true);
+
+    testAppComponent.buttonType = null;
+    fixture.detectChanges();
+    expect(buttonDebugElement.nativeElement.classList.contains("tw-border-text-muted")).toBe(true);
+    expect(linkDebugElement.nativeElement.classList.contains("tw-border-text-muted")).toBe(true);
+  });
+});
+
+@Component({
+  selector: "test-app",
+  template: `
+    <button type="button" bit-button [buttonType]="buttonType">Button</button>
+    <a href="#" bit-button [buttonType]="buttonType"> Link </a>
+  `,
+})
+class TestApp {
+  buttonType: string;
+}