diff --git a/packages/alfa-rules/test/sia-r12/rule.spec.tsx b/packages/alfa-rules/test/sia-r12/rule.spec.tsx
new file mode 100644
index 0000000000..a3de061309
--- /dev/null
+++ b/packages/alfa-rules/test/sia-r12/rule.spec.tsx
@@ -0,0 +1,92 @@
+import { test } from "@siteimprove/alfa-test";
+
+import { Document } from "@siteimprove/alfa-dom";
+
+import R12, { Outcomes } from "../../src/sia-r12/rule";
+
+import { evaluate } from "../common/evaluate";
+import { passed, failed, inapplicable } from "../common/outcome";
+
+test(`evaluates() passes a <button> with accessible name `, async (t) => {
+  const target = <button>My button</button>;
+
+  const document = Document.of([target]);
+
+  t.deepEqual(await evaluate(R12, { document }), [
+    passed(R12, target, {
+      1: Outcomes.HasName,
+    }),
+  ]);
+});
+
+test(`evaluates() passes a submit button element with an accessible name given by the value attribute `, async (t) => {
+  const input = <input type="submit" value="Submit" />;
+
+  const document = Document.of([input]);
+
+  t.deepEqual(await evaluate(R12, { document }), [
+    passed(R12, input, {
+      1: Outcomes.HasName,
+    }),
+  ]);
+});
+
+test(`evaluates() passes a <button> with a name given by the \`aria-label\` attribute`, async (t) => {
+  const target = <button aria-label="My button"></button>;
+
+  const document = Document.of([target]);
+
+  t.deepEqual(await evaluate(R12, { document }), [
+    passed(R12, target, {
+      1: Outcomes.HasName,
+    }),
+  ]);
+});
+
+test(`evaluates() fails a button with no accessible name`, async (t) => {
+  const target = <button></button>;
+
+  const document = Document.of([target]);
+
+  t.deepEqual(await evaluate(R12, { document }), [
+    failed(R12, target, {
+      1: Outcomes.HasNoName,
+    }),
+  ]);
+});
+
+test(`evaluates() fails an element with \`button\` role without an accessible name`, async (t) => {
+  const target = <span role="button"></span>;
+
+  const document = Document.of([target]);
+
+  t.deepEqual(await evaluate(R12, { document }), [
+    failed(R12, target, {
+      1: Outcomes.HasNoName,
+    }),
+  ]);
+});
+
+test(`evaluate() is inapplicable to image buttons`, async (t) => {
+  const target = <input type="image" value="download" alt="Download" />;
+
+  const document = Document.of([target]);
+
+  t.deepEqual(await evaluate(R12, { document }), [inapplicable(R12)]);
+});
+
+test(`evaluate() is inapplicabile to element with no button role`, async (t) => {
+  const target = <div>Press Here</div>;
+
+  const document = Document.of([target]);
+
+  t.deepEqual(await evaluate(R12, { document }), [inapplicable(R12)]);
+});
+
+test(`evaluate() is inapplicabile to button element with none role`, async (t) => {
+  const target = <button role="none" disabled></button>;
+
+  const document = Document.of([target]);
+
+  t.deepEqual(await evaluate(R12, { document }), [inapplicable(R12)]);
+});
diff --git a/packages/alfa-rules/tsconfig.json b/packages/alfa-rules/tsconfig.json
index cddf17b7d7..33b77b3d51 100644
--- a/packages/alfa-rules/tsconfig.json
+++ b/packages/alfa-rules/tsconfig.json
@@ -162,6 +162,7 @@
     "test/sia-r9/rule.spec.tsx",
     "test/sia-r10/rule.spec.tsx",
     "test/sia-r11/rule.spec.tsx",
+    "test/sia-r12/rule.spec.tsx",
     "test/sia-r13/rule.spec.tsx",
     "test/sia-r14/rule.spec.tsx",
     "test/sia-r15/rule.spec.tsx",