SIA R5: add test (#794)

* Test r5 added * Apply suggestions from code review Co-authored-by: Jean-Yves Moyen <[email protected]> * variable const target changed to html Co-authored-by: Jean-Yves Moyen <[email protected]>
Siteimprove · May 11, 2021 · 6bc0448 · 6bc0448
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diff --git a/packages/alfa-rules/test/sia-r5/rule.spec.tsx b/packages/alfa-rules/test/sia-r5/rule.spec.tsx
@@ -0,0 +1,51 @@
+import { test } from "@siteimprove/alfa-test";
+
+import { Document } from "@siteimprove/alfa-dom";
+
+import R5, { Outcomes } from "../../src/sia-r5/rule";
+
+import { evaluate } from "../common/evaluate";
+import { passed, failed, inapplicable } from "../common/outcome";
+
+test(`evaluate() passes a lang attribute with valid primary tag`, async (t) => {
+  const html = <html lang="en"></html>;
+
+  const document = Document.of([html]);
+
+  t.deepEqual(await evaluate(R5, { document }), [
+    passed(R5, html.attribute("lang").get(), {
+      1: Outcomes.HasValidLanguage,
+    }),
+  ]);
+});
+
+test(`evaluate() passes a lang attribute with valid primary tag and invalid region subtag`, async (t) => {
+  const html = <html lang="en-US-GB"></html>;
+
+  const document = Document.of([html]);
+
+  t.deepEqual(await evaluate(R5, { document }), [
+    passed(R5, html.attribute("lang").get(), {
+      1: Outcomes.HasValidLanguage,
+    }),
+  ]);
+});
+
+test(`evaluate() fails a lang attribute with invalid primary tag.`, async (t) => {
+  const html = <html lang="invalid"></html>;
+
+  const document = Document.of([html]);
+
+  t.deepEqual(await evaluate(R5, { document }), [
+    failed(R5, html.attribute("lang").get(), {
+      1: Outcomes.HasNoValidLanguage,
+    }),
+  ]);
+});
+
+test(`evaluate() is inapplicable to svg elements.`, async (t) => {
+  const html = <svg xmlns="http://www.w3.org/2000/svg" lang="fr"></svg>;
+  const document = Document.of([html]);
+
+  t.deepEqual(await evaluate(R5, { document }), [inapplicable(R5)]);
+});
diff --git a/packages/alfa-rules/tsconfig.json b/packages/alfa-rules/tsconfig.json
@@ -156,6 +156,7 @@
     "test/sia-r2/rule.spec.tsx", 
     "test/sia-r3/rule.spec.tsx",
     "test/sia-r4/rule.spec.tsx",
+    "test/sia-r5/rule.spec.tsx",
     "test/sia-r6/rule.spec.tsx",
     "test/sia-r7/rule.spec.tsx",
     "test/sia-r9/rule.spec.tsx",