Intl.RelativeTimeFormat: Add some tests for the 'narrow' style.

test/intl402/RelativeTimeFormat/prototype/format/en-us-style-short.js

+// Copyright 2018 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.RelativeTimeFormat.prototype.format
+description: Checks the behavior of Intl.RelativeTimeFormat.prototype.format() in English.
+features: [Intl.RelativeTimeFormat]
+locale: [en-US]
+---*/
+
+const units = {
+  "second": "sec.",
+  "minute": "min.",
+  "hour": "hr.",
+  "day": undefined,
+  "week": "wk.",
+  "month": "mo.",
+  "quarter": "qtr.",
+  "year": "yr.",
+};
+
+const rtf = new Intl.RelativeTimeFormat("en-US", {
+  "style": "short",
+});
+
+assert.sameValue(typeof rtf.format, "function", "format should be supported");
+
+for (const [unitArgument, unitString] of Object.entries(units)) {
+  const singular = unitString || `${unitArgument}`;
+  const plural = unitString || `${unitArgument}s`;
+  assert.sameValue(rtf.format(1000, unitArgument), `in 1,000 ${plural}`);
+  assert.sameValue(rtf.format(10, unitArgument), `in 10 ${plural}`);
+  assert.sameValue(rtf.format(2, unitArgument), `in 2 ${plural}`);
+  assert.sameValue(rtf.format(1, unitArgument), `in 1 ${singular}`);
+  assert.sameValue(rtf.format(0, unitArgument), `in 0 ${plural}`);
+  assert.sameValue(rtf.format(-0, unitArgument), `0 ${plural} ago`);
+  assert.sameValue(rtf.format(-1, unitArgument), `1 ${singular} ago`);
+  assert.sameValue(rtf.format(-2, unitArgument), `2 ${plural} ago`);
+  assert.sameValue(rtf.format(-10, unitArgument), `10 ${plural} ago`);
+  assert.sameValue(rtf.format(-1000, unitArgument), `1,000 ${plural} ago`);
+}

test/intl402/RelativeTimeFormat/prototype/formatToParts/en-us-style-short.js

+// Copyright 2018 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.RelativeTimeFormat.prototype.formatToParts
+description: Checks the behavior of Intl.RelativeTimeFormat.prototype.formatToParts() in English.
+features: [Intl.RelativeTimeFormat]
+locale: [en-US]
+---*/
+
+function verifyFormatParts(actual, expected, message) {
+  assert.sameValue(actual.length, expected.length, `${message}: length`);
+
+  for (let i = 0; i < actual.length; ++i) {
+    assert.sameValue(actual[i].type, expected[i].type, `${message}: parts[${i}].type`);
+    assert.sameValue(actual[i].value, expected[i].value, `${message}: parts[${i}].value`);
+    assert.sameValue(actual[i].unit, expected[i].unit, `${message}: parts[${i}].unit`);
+  }
+}
+
+const units = {
+  "second": "sec.",
+  "minute": "min.",
+  "hour": "hr.",
+  "day": undefined,
+  "week": "wk.",
+  "month": "mo.",
+  "quarter": "qtr.",
+  "year": "yr.",
+};
+
+const rtf = new Intl.RelativeTimeFormat("en-US", {
+  "style": "short",
+});
+
+assert.sameValue(typeof rtf.formatToParts, "function", "formatToParts should be supported");
+
+for (const [unitArgument, unitString] of Object.entries(units)) {
+  const singular = unitString || `${unitArgument}`;
+  const plural = unitString || `${unitArgument}s`;
+
+  verifyFormatParts(rtf.formatToParts(1000, unitArgument), [
+    { "type": "literal", "value": "in " },
+    { "type": "integer", "value": "1,000", "unit": unitArgument },
+    { "type": "literal", "value": ` ${plural}` },
+  ], `formatToParts(1000, ${unitArgument})`);
+
+  verifyFormatParts(rtf.formatToParts(10, unitArgument), [
+    { "type": "literal", "value": "in " },
+    { "type": "integer", "value": "10", "unit": unitArgument },
+    { "type": "literal", "value": ` ${plural}` },
+  ], `formatToParts(10, ${unitArgument})`);
+
+  verifyFormatParts(rtf.formatToParts(2, unitArgument), [
+    { "type": "literal", "value": "in " },
+    { "type": "integer", "value": "2", "unit": unitArgument },
+    { "type": "literal", "value": ` ${plural}` },
+  ], `formatToParts(2, ${unitArgument})`);
+
+  verifyFormatParts(rtf.formatToParts(1, unitArgument), [
+    { "type": "literal", "value": "in " },
+    { "type": "integer", "value": "1", "unit": unitArgument },
+    { "type": "literal", "value": ` ${singular}` },
+  ], `formatToParts(1, ${unitArgument})`);
+
+  verifyFormatParts(rtf.formatToParts(0, unitArgument), [
+    { "type": "literal", "value": "in " },
+    { "type": "integer", "value": "0", "unit": unitArgument },
+    { "type": "literal", "value": ` ${plural}` },
+  ], `formatToParts(0, ${unitArgument})`);
+
+  verifyFormatParts(rtf.formatToParts(-0, unitArgument), [
+    { "type": "integer", "value": "0", "unit": unitArgument },
+    { "type": "literal", "value": ` ${plural} ago` },
+  ], `formatToParts(-0, ${unitArgument})`);
+
+  verifyFormatParts(rtf.formatToParts(-1, unitArgument), [
+    { "type": "integer", "value": "1", "unit": unitArgument },
+    { "type": "literal", "value": ` ${singular} ago` },
+  ], `formatToParts(-1, ${unitArgument})`);
+
+  verifyFormatParts(rtf.formatToParts(-2, unitArgument), [
+    { "type": "integer", "value": "2", "unit": unitArgument },
+    { "type": "literal", "value": ` ${plural} ago` },
+  ], `formatToParts(-2, ${unitArgument})`);
+
+  verifyFormatParts(rtf.formatToParts(-10, unitArgument), [
+    { "type": "integer", "value": "10", "unit": unitArgument },
+    { "type": "literal", "value": ` ${plural} ago` },
+  ], `formatToParts(-10, ${unitArgument})`);
+
+  verifyFormatParts(rtf.formatToParts(-1000, unitArgument), [
+    { "type": "integer", "value": "1,000", "unit": unitArgument },
+    { "type": "literal", "value": ` ${plural} ago` },
+  ], `formatToParts(-1000, ${unitArgument})`);
+}