1 files changed, 68 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Locale/constructor-options-casefirst-valid.js b/js/src/tests/test262/intl402/Locale/constructor-options-casefirst-valid.js
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+++ b/js/src/tests/test262/intl402/Locale/constructor-options-casefirst-valid.js
@@ -0,0 +1,68 @@
+// Copyright 2018 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-intl.locale
+description: >
+    Checks valid cases for the options argument to the Locale constructor.
+info: |
+    Intl.Locale( tag [, options] )
+
+    ...
+    22. Let kf be ? GetOption(options, "caseFirst", "string", « "upper", "lower", "false" », undefined).
+    23. Set opt.[[kf]] to kf.
+    ...
+    30. Let r be ! ApplyUnicodeExtensionToTag(tag, opt, relevantExtensionKeys).
+    ...
+
+    ApplyUnicodeExtensionToTag( tag, options, relevantExtensionKeys )
+
+    ...
+    8. Let locale be the String value that is tag with all Unicode locale extension sequences removed.
+    9. Let newExtension be ! CanonicalizeUnicodeExtension(attributes, keywords).
+    10. If newExtension is not the empty String, then
+        a. Let locale be ! InsertUnicodeExtension(locale, newExtension).
+    ...
+
+    CanonicalizeUnicodeExtension( attributes, keywords )
+    ...
+    4. Repeat for each element entry of keywords in List order,
+        a. Let keyword be entry.[[Key]].
+        b. If entry.[[Value]] is not the empty String, then
+            i. Let keyword be the string-concatenation of keyword, "-", and entry.[[Value]].
+        c. Append keyword to fullKeywords.
+    ...
+features: [Intl.Locale]
+---*/
+
+const validCaseFirstOptions = [
+  "upper",
+  "lower",
+  "false",
+  false,
+  { toString() { return false; } },
+];
+for (const caseFirst of validCaseFirstOptions) {
+  const expected = String(caseFirst);
+  let expect = "en-u-kf-" + expected;
+  assert.sameValue(
+    new Intl.Locale('en', { caseFirst }).toString(),
+    expect,
+    `new Intl.Locale("en", { caseFirst: "${caseFirst}" }).toString() returns "${expect}"`
+  );
+
+  expect = "en-u-kf-" + expected;
+  assert.sameValue(
+    new Intl.Locale('en-u-kf-lower', { caseFirst }).toString(),
+    expect,
+    `new Intl.Locale("en-u-kf-lower", { caseFirst: "${caseFirst}" }).toString() returns "${expect}"`
+  );
+
+  assert.sameValue(
+    new Intl.Locale('en-u-kf-lower', { caseFirst }).caseFirst,
+    expected,
+    `new Intl.Locale("en-u-kf-lower", { caseFirst }).caseFirst equals "${expected}"`
+  );
+}
+
+reportCompare(0, 0);