feat(chart): support fixed y-axis domains

src/views/FixedYDomainDemo.test.ts

@@ -0,0 +1,44 @@
+import { flushPromises, mount } from '@vue/test-utils'
+import { describe, expect, it } from 'vitest'
+
+import { WaveformChart } from '../components'
+import { routes } from '../router'
+import FixedYDomainDemo from './FixedYDomainDemo.vue'
+
+describe('fixed Y-domain demo route', () => {
+  it('registers the example route', () => {
+    expect(routes).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          path: '/fixed-y-domain',
+          name: 'fixed-y-domain',
+        }),
+      ]),
+    )
+  })
+
+  it('switches between global, automatic, and per-channel ranges', async () => {
+    const wrapper = mount(FixedYDomainDemo)
+    await flushPromises()
+    const chart = () => wrapper.getComponent(WaveformChart)
+    const modeInputs = wrapper.get('[aria-label="Y 轴范围模式"]').findAll('input[type="radio"]')
+
+    expect(chart().props('yDomain')).toEqual([-80, 80])
+    expect(chart().props('yDomains')).toBeUndefined()
+
+    await modeInputs[0]?.setValue(true)
+    await flushPromises()
+    expect(chart().props('yDomain')).toBeUndefined()
+    expect(chart().props('yDomains')).toBeUndefined()
+
+    await modeInputs[2]?.setValue(true)
+    await flushPromises()
+    expect(chart().props('yDomain')).toBeUndefined()
+    expect(chart().props('yDomains')).toEqual({
+      voltage: [-65, 65],
+      current: [-260, 260],
+    })
+
+    wrapper.unmount()
+  })
+})