fix(tests): fix autoComplete type tests

Previously autoComplete tests failed [1] because they were compile-time
rather than run-time tests, and they were in a file that expected
run-time tests. Moved the compile-time tests to the type file instead.

[1]:
```
yarn run v1.22.21
$ cross-env TZ=Europe/Helsinki yarn test --verbose --coverage
$ cross-env TZ=Europe/Helsinki jest --verbose --coverage
FAIL src/types/tests/auto-complete.test.ts
  ● Test suite failed to run

    Your test suite must contain at least one test.

      at onResult (../node_modules/@jest/core/build/TestScheduler.js:...
      at ../node_modules/@jest/core/build/TestScheduler.js:316:17
      at ../node_modules/emittery/index.js:260:13
          at Array.map (<anonymous>)
      at Emittery.emit (../node_modules/emittery/index.js:258:23)
```

refs YJDH-689

frontend/shared/src/types/auto-complete.d.ts

@@ -1,3 +1,5 @@
+import Subset from './common/subset';
+
 type Digit = '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9';
 
 type Rank = 'primary' | 'secondary' | 'tertiary' | 'fallback';
@@ -267,4 +269,100 @@ type AutofillDetailTokens =
  */
 type AutoComplete = OnOff | AutofillDetailTokens;
 
+// Compile-time tests for AutoComplete type
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+type AutoCompleteTests = [
+  // @ts-expect-error 'off' should not be combined with anything
+  Subset<AutoComplete, 'off bday'>,
+  // @ts-expect-error 'on' should not be combined with anything
+  Subset<AutoComplete, 'on bday'>,
+  // @ts-expect-error No trailing whitespace is allowed
+  Subset<AutoComplete, 'on '>,
+  // @ts-expect-error No leading whitespace is allowed
+  Subset<AutoComplete, ' on'>,
+  // @ts-expect-error No leading & trailing whitespace is allowed
+  Subset<AutoComplete, ' on '>,
+  // @ts-expect-error 'false' is not a valid autocomplete value
+  Subset<AutoComplete, 'false'>,
+  // @ts-expect-error 'true' is not a valid autocomplete value
+  Subset<AutoComplete, 'true'>,
+  // @ts-expect-error An empty string is not a valid autocomplete value
+  Subset<AutoComplete, ''>,
+  // @ts-expect-error '0' is not a valid autocomplete value
+  Subset<AutoComplete, '0'>,
+  // @ts-expect-error '1' is not a valid autocomplete value
+  Subset<AutoComplete, '1'>,
+  // @ts-expect-error 'offx' is not a valid autocomplete value
+  Subset<AutoComplete, 'offx'>,
+  // @ts-expect-error Wrong order of tokens ('home' & 'billing' should be swapped)
+  Subset<AutoComplete, 'section-1 home billing tel-country-code webauthn'>,
+  // On & Off
+  Subset<AutoComplete, 'on'>,
+  Subset<AutoComplete, 'off'>,
+  // Autofill field names
+  Subset<AutoComplete, 'name'>,
+  Subset<AutoComplete, 'honorific-prefix'>,
+  Subset<AutoComplete, 'given-name'>,
+  Subset<AutoComplete, 'additional-name'>,
+  Subset<AutoComplete, 'family-name'>,
+  Subset<AutoComplete, 'honorific-suffix'>,
+  Subset<AutoComplete, 'nickname'>,
+  Subset<AutoComplete, 'username'>,
+  Subset<AutoComplete, 'new-password'>,
+  Subset<AutoComplete, 'current-password'>,
+  Subset<AutoComplete, 'one-time-code'>,
+  Subset<AutoComplete, 'organization-title'>,
+  Subset<AutoComplete, 'organization'>,
+  Subset<AutoComplete, 'street-address'>,
+  Subset<AutoComplete, 'address-line1'>,
+  Subset<AutoComplete, 'address-line2'>,
+  Subset<AutoComplete, 'address-line3'>,
+  Subset<AutoComplete, 'address-level4'>,
+  Subset<AutoComplete, 'address-level3'>,
+  Subset<AutoComplete, 'address-level2'>,
+  Subset<AutoComplete, 'address-level1'>,
+  Subset<AutoComplete, 'country'>,
+  Subset<AutoComplete, 'country-name'>,
+  Subset<AutoComplete, 'postal-code'>,
+  Subset<AutoComplete, 'cc-name'>,
+  Subset<AutoComplete, 'cc-given-name'>,
+  Subset<AutoComplete, 'cc-additional-name'>,
+  Subset<AutoComplete, 'cc-family-name'>,
+  Subset<AutoComplete, 'cc-number'>,
+  Subset<AutoComplete, 'cc-exp'>,
+  Subset<AutoComplete, 'cc-exp-month'>,
+  Subset<AutoComplete, 'cc-exp-year'>,
+  Subset<AutoComplete, 'cc-csc'>,
+  Subset<AutoComplete, 'cc-type'>,
+  Subset<AutoComplete, 'transaction-currency'>,
+  Subset<AutoComplete, 'transaction-amount'>,
+  Subset<AutoComplete, 'language'>,
+  Subset<AutoComplete, 'bday'>,
+  Subset<AutoComplete, 'bday-day'>,
+  Subset<AutoComplete, 'bday-month'>,
+  Subset<AutoComplete, 'bday-year'>,
+  Subset<AutoComplete, 'sex'>,
+  Subset<AutoComplete, 'url'>,
+  Subset<AutoComplete, 'photo'>,
+  // Combinations of 2 tokens
+  Subset<AutoComplete, 'shipping street-address'>,
+  Subset<AutoComplete, 'shipping address-level2'>,
+  Subset<AutoComplete, 'shipping postal-code'>,
+  Subset<AutoComplete, 'shipping tel-local-prefix'>,
+  Subset<AutoComplete, 'shipping tel-local-suffix'>,
+  Subset<AutoComplete, 'current-password webauthn'>,
+  // Combinations of 3 tokens
+  Subset<AutoComplete, 'section-blue shipping street-address'>,
+  Subset<AutoComplete, 'section-blue shipping address-level2'>,
+  Subset<AutoComplete, 'section-blue shipping postal-code'>,
+  Subset<AutoComplete, 'section-red shipping street-address'>,
+  Subset<AutoComplete, 'section-red shipping address-level2'>,
+  Subset<AutoComplete, 'section-red shipping postal-code'>,
+  // Combinations of 4 tokens
+  Subset<AutoComplete, 'section-payment billing work email'>,
+  Subset<AutoComplete, 'section-contact shipping home tel'>,
+  // Combinations of 5 tokens
+  Subset<AutoComplete, 'section-1 billing home tel-country-code webauthn'>
+];
+
 export default AutoComplete;