Fix multiple test errors

Tests doesn't use async functionality and don't call $DONE, so remove
"async" flag:
- src/params/error/async-gen-named-func-expr.template
- test/language/expressions/async-generator/params-named-dflt-abrupt.js
- test/language/expressions/async-generator/params-named-dflt-ref-later.js
- test/language/expressions/async-generator/params-named-dflt-ref-self.js

Intl.PluralRules.prototype is no longer a Intl.Prototype instance:
- test/intl402/PluralRules/prototype/prototype.js

Intl.PluralRules throws an error when called as a function:
- test/intl402/PluralRules/undefined-newtarget-throws.js

Module namespace objects call OrdinaryDelete for symbol properties:
- test/language/module-code/namespace/internals/delete-non-exported.js

Async generators no longer retrieves "done" property twice:
- src/async-generators/yield-star-async-next.case
- src/async-generators/yield-star-async-return.case
- src/async-generators/yield-star-async-throw.case

Minor units of CLF is 4, so we need to test with maximumFractionDigits=3
to get an error:
- test/intl402/NumberFormat/dft-currency-mnfd-range-check-mxfd.js

DateTimeFormat.prototype.formatToParts length property was changed from
0 to 1:
- test/intl402/DateTimeFormat/prototype/formatToParts/length.js

minimumSignificantDigits and maximumSignificantDigits properties are
only retrieved once:
- test/intl402/NumberFormat/11.1.1_32.js

6 files changed, 49 insertions, 58 deletions

diff --git a/test/intl402/DateTimeFormat/prototype/formatToParts/length.js b/test/intl402/DateTimeFormat/prototype/formatToParts/length.js
index 49ceae3bc..948a7f892 100644
--- a/test/intl402/DateTimeFormat/prototype/formatToParts/length.js
+++ b/test/intl402/DateTimeFormat/prototype/formatToParts/length.js
@@ -6,7 +6,7 @@ description: Intl.DateTimeFormat.prototype.formatToParts.length.
 includes: [propertyHelper.js]
 ---*/
 
-assert.sameValue(Intl.DateTimeFormat.prototype.formatToParts.length, 0);
+assert.sameValue(Intl.DateTimeFormat.prototype.formatToParts.length, 1);
 
 verifyNotEnumerable(Intl.DateTimeFormat.prototype.formatToParts, "length");
 verifyNotWritable(Intl.DateTimeFormat.prototype.formatToParts, "length");
diff --git a/test/intl402/NumberFormat/11.1.1_32.js b/test/intl402/NumberFormat/11.1.1_32.js
index fba78bb8f..cc45b009e 100644
--- a/test/intl402/NumberFormat/11.1.1_32.js
+++ b/test/intl402/NumberFormat/11.1.1_32.js
@@ -9,28 +9,23 @@ description: >
 author: Norbert Lindenberg
 ---*/
 
-var read = 0;
+var minimumSignificantDigitsRead = false;
+var maximumSignificantDigitsRead = false;
 
 function readMinimumSignificantDigits() {
-    ++read;
-    if (read === 1) {
-        return 0; // invalid value, but on first read that's OK
-    } else if (read === 3) {
-        return 1; // valid value
-    } else {
-        $ERROR("minimumSignificantDigits read out of sequence: " + read + ".");
-    }
+    assert.sameValue(minimumSignificantDigitsRead, false,
+                     "minimumSignificantDigits getter already called");
+    assert.sameValue(maximumSignificantDigitsRead, false,
+                     "maximumSignificantDigits getter called before minimumSignificantDigits");
+    minimumSignificantDigitsRead = true;
+    return 1;
 }
 
 function readMaximumSignificantDigits() {
-    ++read;
-    if (read === 2) {
-        return 0; // invalid value, but on first read that's OK
-    } else if (read === 4) {
-        return 1; // valid value
-    } else {
-        $ERROR("maximumSignificantDigits read out of sequence: " + read + ".");
-    }
+    assert.sameValue(maximumSignificantDigitsRead, false,
+                     "maximumSignificantDigits getter already called");
+    maximumSignificantDigitsRead = true;
+    return 1;
 }
 
 var options = {};
@@ -41,6 +36,5 @@ Object.defineProperty(options, "maximumSignificantDigits",
 
 new Intl.NumberFormat("de", options);
 
-if (read !== 4) {
-    $ERROR("insuffient number of property reads: " + read + ".");
-}
+assert(minimumSignificantDigitsRead, "minimumSignificantDigits getter was called once");
+assert(maximumSignificantDigitsRead, "maximumSignificantDigits getter was called once");
diff --git a/test/intl402/NumberFormat/dft-currency-mnfd-range-check-mxfd.js b/test/intl402/NumberFormat/dft-currency-mnfd-range-check-mxfd.js
index 6cefcb96d..00eed32e4 100644
--- a/test/intl402/NumberFormat/dft-currency-mnfd-range-check-mxfd.js
+++ b/test/intl402/NumberFormat/dft-currency-mnfd-range-check-mxfd.js
@@ -17,5 +17,5 @@ assert.throws(RangeError, () => new Intl.NumberFormat('en', {
 assert.throws(RangeError, () => new Intl.NumberFormat('en', {
     style: 'currency',
     currency: 'CLF',
-    maximumFractionDigits: 4
-}), 'CurrencyDigits(CLF) == 4');
+    maximumFractionDigits: 3
+}), 'CurrencyDigits(CLF) == 3');
diff --git a/test/intl402/PluralRules/prototype/prototype.js b/test/intl402/PluralRules/prototype/prototype.js
index c3b9bcae5..c42e80331 100644
--- a/test/intl402/PluralRules/prototype/prototype.js
+++ b/test/intl402/PluralRules/prototype/prototype.js
@@ -4,14 +4,13 @@
 /*---
 esid: sec-properties-of-intl-pluralrules-prototype-object
 description: >
-    Tests that Intl.PluralRules.prototype is an object that  has been
+    Tests that Intl.PluralRules.prototype is not an object that has been
     initialized as an Intl.PluralRules.
 author: Zibi Braniecki
 ---*/
 
-// test by calling a function that would fail if "this" were not an object
+// test by calling a function that fails if "this" is not an object
 // initialized as an Intl.PluralRules
-if (typeof Intl.PluralRules.prototype.select(0) !== "string") {
-    $ERROR("Intl.PluralRules's prototype is not an object that has been " +
-        "initialized as an Intl.PluralRules");
-}
+assert.throws(TypeError, function() {
+    Intl.PluralRules.prototype.select(0);
+}, "Intl.PluralRules.prototype is not an object that has been initialized as an Intl.PluralRules");
diff --git a/test/intl402/PluralRules/this-not-ignored.js b/test/intl402/PluralRules/this-not-ignored.js
deleted file mode 100644
index 922fcc51b..000000000
--- a/test/intl402/PluralRules/this-not-ignored.js
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2016 Mozilla Corporation. All rights reserved.
-// This code is governed by the license found in the LICENSE file.
-
-/*---
-esid: sec-Intl.PluralRules
-description: Tests that the this-value is ignored in PluralRules
-author: Zibi Braniecki
-includes: [testIntl.js]
----*/
-
-testWithIntlConstructors(function (Constructor) {
-    var obj, newObj;
-
-    // variant 1: use constructor in a "new" expression
-    obj = new Constructor();
-    newObj = Intl.PluralRules.call(obj);
-    if (obj === newObj) {
-      $ERROR("PluralRules object created with \"new\" was not ignored as this-value.");
-    }
-
-    // variant 2: use constructor as a function
-    obj = Constructor();
-    newObj = Intl.PluralRules.call(obj);
-    if (obj === newObj) {
-      $ERROR("PluralRules object created with constructor as function was not ignored as this-value.");
-    }
-
-    return true;
-});
diff --git a/test/intl402/PluralRules/undefined-newtarget-throws.js b/test/intl402/PluralRules/undefined-newtarget-throws.js
new file mode 100644
index 000000000..672f0c9e2
--- /dev/null
+++ b/test/intl402/PluralRules/undefined-newtarget-throws.js
@@ -0,0 +1,27 @@
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules
+description: Tests that PluralRules throws when called as a function
+author: Zibi Braniecki
+includes: [testIntl.js]
+---*/
+
+assert.throws(TypeError, function() {
+  Intl.PluralRules();
+}, "Intl.PluralRules throws when called as a function");
+
+assert.throws(TypeError, function() {
+  Intl.PluralRules.call(undefined);
+}, "Intl.PluralRules throws when called as a function with |undefined| as this-value");
+
+testWithIntlConstructors(function (Constructor) {
+    var obj = new Constructor();
+
+    assert.throws(TypeError, function() {
+        Intl.PluralRules.call(obj)
+    }, "Intl.PluralRules throws when called as a function with an Intl-object as this-value");
+
+    return true;
+});