1 files changed, 160 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/DateTimeFormat/prototype/formatRangeToParts/fractionalSecondDigits.js b/js/src/tests/test262/intl402/DateTimeFormat/prototype/formatRangeToParts/fractionalSecondDigits.js
new file mode 100644
index 0000000000..0840f80d25
--- /dev/null
+++ b/js/src/tests/test262/intl402/DateTimeFormat/prototype/formatRangeToParts/fractionalSecondDigits.js
@@ -0,0 +1,160 @@
+// Copyright 2020 Google Inc, Igalia S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-createdatetimeformat
+description: Checks basic handling of fractionalSecondDigits.
+features: [Intl.DateTimeFormat-fractionalSecondDigits, Intl.DateTimeFormat-formatRange]
+locale: [en-US]
+---*/
+
+// Tolerate implementation variance by expecting consistency without being prescriptive.
+// TODO: can we change tests to be less reliant on CLDR formats while still testing that
+// Temporal and Intl are behaving as expected?
+const usDateRangeSeparator = new Intl.DateTimeFormat("en-US", { dateStyle: "short" })
+  .formatRangeToParts(1 * 86400 * 1000, 366 * 86400 * 1000)
+  .find((part) => part.type === "literal" && part.source === "shared").value;
+
+function* zip(a, b) {
+  assert.sameValue(a.length, b.length);
+  for (let i = 0; i < a.length; ++i) {
+    yield [i, a[i], b[i]];
+  }
+}
+
+function compare(actual, expected) {
+  for (const [i, actualEntry, expectedEntry] of zip(actual, expected)) {
+    assert.sameValue(actualEntry.type, expectedEntry.type, `type for entry ${i}`);
+    assert.sameValue(actualEntry.value, expectedEntry.value, `value for entry ${i}`);
+    assert.sameValue(actualEntry.source, expectedEntry.source, `source for entry ${i}`);
+  }
+}
+
+const d1 = new Date(2019, 7, 10,  1, 2, 3, 234);
+const d2 = new Date(2019, 7, 10,  1, 2, 3, 567);
+const d3 = new Date(2019, 7, 10,  1, 2, 13, 987);
+
+assert.throws(RangeError, () => {
+    new Intl.DateTimeFormat(
+      'en', { minute: "numeric", second: "numeric", fractionalSecondDigits: 0});
+  }, "fractionalSecondDigits 0 should throw RangeError for out of range");
+
+assert.throws(RangeError, () => {
+    new Intl.DateTimeFormat(
+      'en', { minute: "numeric", second: "numeric", fractionalSecondDigits: 4});
+  }, "fractionalSecondDigits 4 should throw RangeError for out of range");
+
+let dtf = new Intl.DateTimeFormat(
+    'en', { minute: "numeric", second: "numeric", fractionalSecondDigits: undefined});
+
+compare(dtf.formatRangeToParts(d1, d2), [
+  { type: "minute", value: "02", source: "shared" },
+  { type: "literal", value: ":", source: "shared" },
+  { type: "second", value: "03", source: "shared" }
+]);
+
+compare(dtf.formatRangeToParts(d1, d3), [
+  { type: "minute", value: "02", source: "startRange" },
+  { type: "literal", value: ":", source: "startRange" },
+  { type: "second", value: "03", source: "startRange" },
+  { type: "literal", value: usDateRangeSeparator, source: "shared" },
+  { type: "minute", value: "02", source: "endRange" },
+  { type: "literal", value: ":", source: "endRange" },
+  { type: "second", value: "13", source: "endRange" }
+]);
+
+dtf = new Intl.DateTimeFormat(
+    'en', { minute: "numeric", second: "numeric", fractionalSecondDigits: 1});
+
+compare(dtf.formatRangeToParts(d1, d2), [
+  { type: "minute", value: "02", source: "startRange" },
+  { type: "literal", value: ":", source: "startRange" },
+  { type: "second", value: "03", source: "startRange" },
+  { type: "literal", value: ".", source: "startRange" },
+  { type: "fractionalSecond", value: "2", source: "startRange" },
+  { type: "literal", value: usDateRangeSeparator, source: "shared" },
+  { type: "minute", value: "02", source: "endRange" },
+  { type: "literal", value: ":", source: "endRange" },
+  { type: "second", value: "03", source: "endRange" },
+  { type: "literal", value: ".", source: "endRange" },
+  { type: "fractionalSecond", value: "5", source: "endRange" }
+]);
+
+compare(dtf.formatRangeToParts(d1, d3), [
+  { type: "minute", value: "02", source: "startRange" },
+  { type: "literal", value: ":", source: "startRange" },
+  { type: "second", value: "03", source: "startRange" },
+  { type: "literal", value: ".", source: "startRange" },
+  { type: "fractionalSecond", value: "2", source: "startRange" },
+  { type: "literal", value: usDateRangeSeparator, source: "shared" },
+  { type: "minute", value: "02", source: "endRange" },
+  { type: "literal", value: ":", source: "endRange" },
+  { type: "second", value: "13", source: "endRange" },
+  { type: "literal", value: ".", source: "endRange" },
+  { type: "fractionalSecond", value: "9", source: "endRange" }
+]);
+
+dtf = new Intl.DateTimeFormat(
+    'en', { minute: "numeric", second: "numeric", fractionalSecondDigits: 2});
+
+compare(dtf.formatRangeToParts(d1, d2), [
+  { type: "minute", value: "02", source: "startRange" },
+  { type: "literal", value: ":", source: "startRange" },
+  { type: "second", value: "03", source: "startRange" },
+  { type: "literal", value: ".", source: "startRange" },
+  { type: "fractionalSecond", value: "23", source: "startRange" },
+  { type: "literal", value: usDateRangeSeparator, source: "shared" },
+  { type: "minute", value: "02", source: "endRange" },
+  { type: "literal", value: ":", source: "endRange" },
+  { type: "second", value: "03", source: "endRange" },
+  { type: "literal", value: ".", source: "endRange" },
+  { type: "fractionalSecond", value: "56", source: "endRange" }
+]);
+
+compare(dtf.formatRangeToParts(d1, d3), [
+  { type: "minute", value: "02", source: "startRange" },
+  { type: "literal", value: ":", source: "startRange" },
+  { type: "second", value: "03", source: "startRange" },
+  { type: "literal", value: ".", source: "startRange" },
+  { type: "fractionalSecond", value: "23", source: "startRange" },
+  { type: "literal", value: usDateRangeSeparator, source: "shared" },
+  { type: "minute", value: "02", source: "endRange" },
+  { type: "literal", value: ":", source: "endRange" },
+  { type: "second", value: "13", source: "endRange" },
+  { type: "literal", value: ".", source: "endRange" },
+  { type: "fractionalSecond", value: "98", source: "endRange" }
+]);
+
+dtf = new Intl.DateTimeFormat(
+    'en', { minute: "numeric", second: "numeric", fractionalSecondDigits: 3});
+
+compare(dtf.formatRangeToParts(d1, d2), [
+  { type: "minute", value: "02", source: "startRange" },
+  { type: "literal", value: ":", source: "startRange" },
+  { type: "second", value: "03", source: "startRange" },
+  { type: "literal", value: ".", source: "startRange" },
+  { type: "fractionalSecond", value: "234", source: "startRange" },
+  { type: "literal", value: usDateRangeSeparator, source: "shared" },
+  { type: "minute", value: "02", source: "endRange" },
+  { type: "literal", value: ":", source: "endRange" },
+  { type: "second", value: "03", source: "endRange" },
+  { type: "literal", value: ".", source: "endRange" },
+  { type: "fractionalSecond", value: "567", source: "endRange" }
+]);
+
+compare(dtf.formatRangeToParts(d1, d3), [
+  { type: "minute", value: "02", source: "startRange" },
+  { type: "literal", value: ":", source: "startRange" },
+  { type: "second", value: "03", source: "startRange" },
+  { type: "literal", value: ".", source: "startRange" },
+  { type: "fractionalSecond", value: "234", source: "startRange" },
+  { type: "literal", value: usDateRangeSeparator, source: "shared" },
+  { type: "minute", value: "02", source: "endRange" },
+  { type: "literal", value: ":", source: "endRange" },
+  { type: "second", value: "13", source: "endRange" },
+  { type: "literal", value: ".", source: "endRange" },
+  { type: "fractionalSecond", value: "987", source: "endRange" }
+]);
+
+
+reportCompare(0, 0);