feat(chart): add series styling and visibility controls

src/components/interaction/WaveformTooltip.test.ts

@@ -0,0 +1,85 @@
+import { mount } from '@vue/test-utils'
+import { describe, expect, it } from 'vitest'
+
+import WaveformTooltip from './WaveformTooltip.vue'
+
+describe('WaveformTooltip', () => {
+  const point = { x: 1, y: 12 }
+
+  function mountTooltip(positionX: number, containerWidth = 400) {
+    return mount(WaveformTooltip, {
+      props: {
+        visible: true,
+        position: { x: positionX, y: 100 },
+        timeUnit: 's',
+        hoveredPoint: point,
+        seriesPoints: [{ trackIndex: 0, name: 'Temperature', color: '#f00', point }],
+        containerWidth,
+        containerHeight: 300,
+      },
+    })
+  }
+
+  it('positions the tooltip to the right when enough space remains', () => {
+    const tooltip = mountTooltip(100).get('.waveform-tooltip')
+
+    expect(tooltip.attributes('style')).toContain('left: 112px')
+    expect(tooltip.attributes('style')).not.toContain('right:')
+  })
+
+  it('flips the tooltip to the left near the right boundary', () => {
+    const tooltip = mountTooltip(370).get('.waveform-tooltip')
+
+    expect(tooltip.attributes('style')).toContain('right: 42px')
+    expect(tooltip.attributes('style')).not.toContain('left:')
+  })
+
+  it('keeps the tooltip inside the left boundary when neither side has enough space', () => {
+    const tooltip = mountTooltip(100, 200).get('.waveform-tooltip')
+
+    expect(tooltip.attributes('style')).toContain('left: 8px')
+    expect(tooltip.attributes('style')).not.toContain('right:')
+  })
+
+  it('shows resolved asymmetric errors beside the hovered value', () => {
+    const pointWithErrors = { x: 1, y: 12, error: 1, upperError: 2 }
+    const wrapper = mount(WaveformTooltip, {
+      props: {
+        visible: true,
+        position: { x: 10, y: 10 },
+        timeUnit: 's',
+        hoveredPoint: pointWithErrors,
+        seriesPoints: [
+          {
+            trackIndex: 0,
+            name: '温度',
+            color: '#f00',
+            unit: 'C',
+            point: pointWithErrors,
+          },
+        ],
+        containerWidth: 400,
+        containerHeight: 300,
+      },
+    })
+
+    expect(wrapper.get('.waveform-tooltip__series small').text()).toBe('(+2 / -1)')
+  })
+
+  it('omits the error label when both resolved errors are zero', () => {
+    const point = { x: 1, y: 12 }
+    const wrapper = mount(WaveformTooltip, {
+      props: {
+        visible: true,
+        position: { x: 10, y: 10 },
+        timeUnit: 's',
+        hoveredPoint: point,
+        seriesPoints: [{ trackIndex: 0, name: '温度', color: '#f00', point }],
+        containerWidth: 400,
+        containerHeight: 300,
+      },
+    })
+
+    expect(wrapper.find('.waveform-tooltip__series small').exists()).toBe(false)
+  })
+})