Intl.RelativeTimeFormat: Add some tests for non-object options arguments to the constructor.

test/intl402/RelativeTimeFormat/constructor/constructor/options-toobject-prototype.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
+description: Checks handling of non-object option arguments to the RelativeTimeFormat constructor.
+info: |
+    InitializeRelativeTimeFormat (relativeTimeFormat, locales, options)
+features: [Intl.RelativeTimeFormat]
+---*/
+
+Object.defineProperties(Object.prototype, {
+  "style": {
+    value: "short",
+  },
+  "numeric": {
+    value: "auto",
+  },
+})
+
+const optionsArguments = [
+  true,
+  "test",
+  7,
+  Symbol(),
+];
+
+for (const options of optionsArguments) {
+  const rtf = new Intl.RelativeTimeFormat([], options);
+  const resolvedOptions = rtf.resolvedOptions();
+  assert.sameValue(resolvedOptions.style, "short",
+    `options argument ${String(options)} should yield the correct value for "style"`);
+  assert.sameValue(resolvedOptions.numeric, "auto",
+    `options argument ${String(options)} should yield the correct value for "numeric"`);
+}

test/intl402/RelativeTimeFormat/constructor/constructor/options-toobject.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
+description: Checks handling of non-object option arguments to the RelativeTimeFormat constructor.
+info: |
+    InitializeRelativeTimeFormat (relativeTimeFormat, locales, options)
+features: [Intl.RelativeTimeFormat]
+---*/
+
+const optionsArguments = [
+  true,
+  "test",
+  7,
+  Symbol(),
+];
+
+for (const options of optionsArguments) {
+  const rtf = new Intl.RelativeTimeFormat([], options);
+  const resolvedOptions = rtf.resolvedOptions();
+  assert.sameValue(resolvedOptions.style, "long",
+    `options argument ${String(options)} should yield the correct value for "style"`);
+  assert.sameValue(resolvedOptions.numeric, "always",
+    `options argument ${String(options)} should yield the correct value for "numeric"`);
+}

test/intl402/RelativeTimeFormat/constructor/constructor/options-undefined.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
+description: Checks handling of non-object option arguments to the RelativeTimeFormat constructor.
+info: |
+    InitializeRelativeTimeFormat (relativeTimeFormat, locales, options)
+features: [Intl.RelativeTimeFormat]
+---*/
+
+Object.defineProperties(Object.prototype, {
+  "style": {
+    get() {
+      throw new Error("Should not call style getter");
+    }
+  },
+  "numeric": {
+    get() {
+      throw new Error("Should not call numeric getter");
+    }
+  },
+})
+
+const optionsArguments = [
+  [],
+  [[]],
+  [[], undefined],
+];
+
+for (const args of optionsArguments) {
+  const rtf = new Intl.RelativeTimeFormat(...args);
+  const resolvedOptions = rtf.resolvedOptions();
+  assert.sameValue(resolvedOptions.style, "long",
+    `Calling with ${args.length} empty arguments should yield the correct value for "style"`);
+  assert.sameValue(resolvedOptions.numeric, "always",
+    `Calling with ${args.length} empty arguments should yield the correct value for "numeric"`);
+}