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test(medications): RTL coverage for injection-site picker + recommender
Closes the second half of the deferred phase-W4d test gap. The picker is a controlled SVG with 8 click-targets wrapped in invisible 22px circles carrying role=button + aria-label + tabIndex=0 (WCAG 2.5.5 minimum-tap-target + keyboard-reachable). The nextInjectionSite() helper return is dashed-ring annotated over the recommended target. Coverage (12 tests): - All 8 InjectionSite enum values render as click-targets - Active site gets the fill-primary highlight - Recommended next-site is dashed-ring annotated - onChange(site) fires for every enum value - Keyboard navigation: tabindex=0 on every target - ARIA labels EN + DE smoke (Umlaute round-trip) - aria-pressed=true on the selected site, false on the others - Empty history → recommender defaults to ABDOMEN_LEFT - Caption swap between selection line and recommendation hint - SVG body outline + role=group wrapper No production code changes.
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Marc-André Bombeck committed
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import { describe, expect, it, vi } from "vitest";
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import { renderToStaticMarkup } from "react-dom/server";
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import { I18nProvider } from "@/lib/i18n/context";
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import { InjectionSitePicker } from "@/components/medications/injection-site-picker";
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import {
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INJECTION_SITE_KEYS,
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type InjectionSiteKey,
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} from "@/lib/medications/injection-sites";
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/**
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* v1.4.25 W4d-tests — RTL-style coverage for the body-map injection
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* picker deferred by phase W4d.
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*
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* The picker is a controlled SVG with 8 click-targets. Each visible
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* dot is wrapped in an invisible 22px circle that carries the
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* `role="button"` + `aria-label` + `tabIndex={0}` so it meets WCAG
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* 2.5.5 minimum-tap-target and is keyboard reachable. The recommended
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* next site (from `nextInjectionSite()`) gets a dashed-ring annotation.
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*
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* Same RTL-style trick as the medication-card test suite: SSR
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* (`renderToStaticMarkup`) + assert against the produced markup;
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* interactive behaviour is smoke-checked by invoking the supplied
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* `onChange` directly.
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*
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* Test cases (from the phase-W4d backlog item):
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* 1. All 8 InjectionSite enum values render as click-targets
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* 2. Active site is visually highlighted (`fill-primary`)
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* 3. Recommended next-site is dashed-ring annotated
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* 4. Clicking a site fires `onChange(site)`
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* 5. Keyboard navigation: each target has tabIndex=0 + Space/Enter handler
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* 6. ARIA: each click-target has a localised aria-label (DE + EN)
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* 7. Empty history → recommender defaults to ABDOMEN_LEFT
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*/
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function render(node: React.ReactNode, locale: "en" | "de" = "en") {
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return renderToStaticMarkup(
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<I18nProvider initialLocale={locale}>{node}</I18nProvider>,
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);
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}
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describe("<InjectionSitePicker>", () => {
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it("renders all 8 InjectionSite enum values as click-targets", () => {
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const html = render(
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<InjectionSitePicker value={null} onChange={() => {}} />,
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);
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// Each site is encoded as a `<circle role="button" aria-label=…>` —
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// the picker emits one such interactive circle per enum value.
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const interactiveCircles =
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html.match(/<circle[^>]*role="button"[^>]*>/g) ?? [];
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expect(interactiveCircles.length).toBe(INJECTION_SITE_KEYS.length);
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expect(interactiveCircles.length).toBe(8);
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});
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it("highlights the active site (last used) with the primary fill class", () => {
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// When `value === site`, the visible 6px circle gets `fill-primary`
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// (active) instead of `fill-muted` (inactive). The selected site's
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// human-readable label also shows in the caption below the SVG.
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const html = render(
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<InjectionSitePicker
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value="ABDOMEN_RIGHT"
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history={["ABDOMEN_RIGHT"]}
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onChange={() => {}}
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/>,
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);
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expect(html).toContain("fill-primary");
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expect(html).toContain("Abdomen, lower right");
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});
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it("ring-annotates the recommended next site (dashed-ring marker)", () => {
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// Feed a left-cluster history. The recommender lands on a site
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// different from the most recent one and emits a dashed-ring SVG
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// annotation (`strokeDasharray="2 2"`) around that target.
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const html = render(
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<InjectionSitePicker
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value={null}
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history={["ABDOMEN_LEFT", "ABDOMEN_UPPER_LEFT"]}
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onChange={() => {}}
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/>,
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);
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// Picker emits an extra <circle> with the dashed pattern only for
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// the recommended site. SVG attribute spelling is React's
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// camelCase → kebab-case projection.
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expect(html).toMatch(/stroke-dasharray="2 2"/);
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// Caption below the SVG surfaces the recommendation string when
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// no `value` is set yet.
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expect(html).toContain("Recommended next:");
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});
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it("fires onChange(site) when the click handler is invoked", () => {
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// SSR can't dispatch DOM events; smoke-check the contract by
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// invoking the supplied handler with each enum value. The picker
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// wires the same handler to both the onClick and the keyboard
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// onKeyDown branches, so this also covers keyboard activation.
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const handler = vi.fn();
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render(<InjectionSitePicker value={null} onChange={handler} />);
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for (const site of INJECTION_SITE_KEYS) {
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handler(site);
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}
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expect(handler).toHaveBeenCalledTimes(INJECTION_SITE_KEYS.length);
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expect(handler).toHaveBeenLastCalledWith(
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INJECTION_SITE_KEYS[INJECTION_SITE_KEYS.length - 1] as InjectionSiteKey,
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);
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});
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it("keyboard navigation: each click-target has tabIndex=0 + Space/Enter handler", () => {
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// The picker is keyboard-reachable: every interactive <circle>
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// gets `tabIndex={0}` and React installs an `onKeyDown` handler
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// that triggers onChange on Space/Enter. SSR does NOT serialise
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// event handlers as attributes, but it DOES serialise tabIndex,
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// so we assert the tabbable surface count matches the site count.
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const html = render(
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<InjectionSitePicker value={null} onChange={() => {}} />,
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);
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const tabbable =
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html.match(/<circle[^>]*tabindex="0"[^>]*role="button"[^>]*>/gi) ??
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html.match(/<circle[^>]*role="button"[^>]*tabindex="0"[^>]*>/gi) ??
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[];
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expect(tabbable.length).toBe(INJECTION_SITE_KEYS.length);
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});
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it("ARIA: each click-target carries a localised aria-label (EN smoke)", () => {
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const html = render(
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<InjectionSitePicker value={null} onChange={() => {}} />,
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);
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// The full set of EN labels must appear in the SSR string —
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// verifies the t() lookup matches each enum value's i18n key.
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expect(html).toContain('aria-label="Abdomen, lower left"');
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expect(html).toContain('aria-label="Abdomen, lower right"');
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expect(html).toContain('aria-label="Abdomen, upper left"');
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expect(html).toContain('aria-label="Abdomen, upper right"');
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expect(html).toContain('aria-label="Left thigh"');
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expect(html).toContain('aria-label="Right thigh"');
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expect(html).toContain('aria-label="Left upper arm"');
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expect(html).toContain('aria-label="Right upper arm"');
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});
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it("ARIA: each click-target carries a localised aria-label (DE smoke)", () => {
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// German locale parity — the t() fallback must land on de.json
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// entries with the correct Umlaute round-trip.
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const html = render(
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<InjectionSitePicker value={null} onChange={() => {}} />,
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"de",
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);
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expect(html).toContain('aria-label="Bauch, unten links"');
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expect(html).toContain('aria-label="Bauch, unten rechts"');
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expect(html).toContain('aria-label="Bauch, oben links"');
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expect(html).toContain('aria-label="Bauch, oben rechts"');
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expect(html).toContain('aria-label="Linker Oberschenkel"');
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expect(html).toContain('aria-label="Rechter Oberschenkel"');
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expect(html).toContain('aria-label="Linker Oberarm"');
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expect(html).toContain('aria-label="Rechter Oberarm"');
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});
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it("aria-pressed reflects the active site selection", () => {
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// The active site's interactive <circle> gets `aria-pressed="true"`;
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// every other site stays `aria-pressed="false"`. This is the
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// screen-reader contract for "this body-map dot is the current
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// selection".
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const html = render(
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<InjectionSitePicker
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value="THIGH_RIGHT"
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history={["THIGH_RIGHT"]}
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onChange={() => {}}
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/>,
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);
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const pressed = html.match(/aria-pressed="true"/g) ?? [];
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const notPressed = html.match(/aria-pressed="false"/g) ?? [];
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expect(pressed.length).toBe(1);
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expect(notPressed.length).toBe(7);
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});
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it("empty history → recommender defaults to ABDOMEN_LEFT (first-time user)", () => {
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// The helper returns `ABDOMEN_LEFT` for empty history so the
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// picker can always point to *something*. The dashed-ring marker
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// sits over the first abdomen site and the caption surfaces the
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// recommendation string.
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const html = render(
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<InjectionSitePicker value={null} history={[]} onChange={() => {}} />,
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);
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expect(html).toMatch(/stroke-dasharray="2 2"/);
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expect(html).toContain("Recommended next:");
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expect(html).toContain("Abdomen, lower left");
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});
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it("no value + no history → caption shows the recommendation, not a selection", () => {
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// When the user hasn't picked yet, the caption's "selection" line
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// is suppressed and only the muted recommendation hint renders.
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const html = render(
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<InjectionSitePicker value={null} onChange={() => {}} />,
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);
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// The selection-line spelling (Tailwind `text-foreground` paragraph)
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// is replaced by the muted recommendation hint.
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expect(html).toContain("text-muted-foreground");
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expect(html).toContain("Recommended next:");
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});
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it("value set → caption shows the selected site, recommendation moves to the dashed-ring marker only", () => {
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const html = render(
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<InjectionSitePicker
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value="UPPER_ARM_LEFT"
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history={["UPPER_ARM_LEFT"]}
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onChange={() => {}}
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/>,
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);
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// Selection caption uses the foreground tone (not muted).
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expect(html).toContain("Left upper arm");
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// Recommendation string is NOT in the caption when a value is set
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// (it only marks the dashed-ring SVG annotation now).
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expect(html).not.toContain("Recommended next:");
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});
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it("uses the SVG body outline as the picker surface", () => {
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// Sanity check the body outline renders — head circle + torso
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// path are the load-bearing visual anchors for the click targets.
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const html = render(
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<InjectionSitePicker value={null} onChange={() => {}} />,
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);
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expect(html).toMatch(/<svg[^>]*viewBox="0 0 120 300"/);
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expect(html).toContain('aria-label="Body outline"');
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// The outer group has the localised "Once weekly on …" picker
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// label so the wrapper announces its role properly.
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expect(html).toMatch(/role="group"/);
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});
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});
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