test(sbb-stepper): add visual spec (#2901)

src/elements/stepper/step-label/step-label.visual.spec.ts

@@ -0,0 +1,32 @@
+import { html, type TemplateResult } from 'lit';
+
+import {
+  describeViewports,
+  visualDiffDefault,
+  visualDiffHover,
+} from '../../core/testing/private.js';
+
+import './step-label.js';
+
+describe(`sbb-step-label`, () => {
+  const template = (disabled?: boolean): TemplateResult =>
+    html`<sbb-step-label icon-name="tick-small" ?disabled=${disabled}>Label</sbb-step-label>`;
+
+  describeViewports({ viewports: ['zero', 'medium'] }, () => {
+    for (const state of [visualDiffDefault, visualDiffHover]) {
+      it(
+        state.name,
+        state.with(async (setup) => {
+          await setup.withFixture(template());
+        }),
+      );
+
+      it(
+        `disabled ${state.name}`,
+        state.with(async (setup) => {
+          await setup.withFixture(template(true));
+        }),
+      );
+    }
+  });
+});

src/elements/stepper/stepper/stepper.visual.spec.ts

@@ -0,0 +1,92 @@
+import { html, nothing, type TemplateResult } from 'lit';
+
+import {
+  describeEach,
+  describeViewports,
+  visualDiffDefault,
+  visualDiffFocus,
+  visualRegressionFixture,
+} from '../../core/testing/private.js';
+
+import './stepper.js';
+import '../step.js';
+import '../step-label.js';
+
+describe(`sbb-stepper`, () => {
+  let root: HTMLElement;
+
+  const cases = {
+    orientation: ['horizontal', 'vertical'],
+    linear: [false, true],
+  };
+
+  const template = (
+    linear?: boolean,
+    orientation?: string,
+    longLabel?: boolean,
+    horizontalFrom?: string,
+  ): TemplateResult => html`
+    <sbb-stepper
+      selected-index="0"
+      ?linear=${linear}
+      orientation=${orientation || nothing}
+      horizontal-from=${horizontalFrom || nothing}
+    >
+      <sbb-step-label icon-name="pen-small">Step 1</sbb-step-label>
+      <sbb-step>
+        <p>Step content 1</p>
+      </sbb-step>
+      <sbb-step-label icon-name="pen-small" disabled>Step 2</sbb-step-label>
+      <sbb-step>
+        <p>Step content 2</p>
+      </sbb-step>
+      <sbb-step-label
+        >${longLabel
+          ? 'Step 3 - Long label  lorem ipsum dolor sit amet, consetetur sadipscing elitr'
+          : 'Step 3'}</sbb-step-label
+      >
+      <sbb-step>
+        <p>Step content 3</p>
+      </sbb-step>
+      <sbb-step-label>Step 4</sbb-step-label>
+      <sbb-step>
+        <p>Step content 4</p>
+      </sbb-step>
+    </sbb-stepper>
+  `;
+
+  describeViewports({ viewports: ['zero', 'medium'] }, () => {
+    describeEach(cases, ({ linear, orientation }) => {
+      beforeEach(async function () {
+        root = await visualRegressionFixture(template(linear, orientation));
+      });
+
+      for (const state of [visualDiffDefault, visualDiffFocus]) {
+        it(
+          state.name,
+          state.with((setup) => {
+            setup.withSnapshotElement(root);
+          }),
+        );
+      }
+    });
+
+    it(
+      `horizontal-from=medium`,
+      visualDiffDefault.with(async (setup) => {
+        await setup.withFixture(template(false, 'vertical', false, 'medium'));
+      }),
+    );
+  });
+
+  describeViewports({ viewports: ['medium'] }, () => {
+    for (const orientation of cases.orientation) {
+      it(
+        `orientation=${orientation}_long labels`,
+        visualDiffDefault.with(async (setup) => {
+          await setup.withFixture(template(false, orientation, true));
+        }),
+      );
+    }
+  });
+});