Coverage: Number.prototype.toPrecision throws a RangeError if precision cannot be coerced to a number in range. Fixes gh-2765

test/built-ins/Number/prototype/toPrecision/precision-cannot-be-coerced-to-a-number-in-range.js

@@ -0,0 +1,28 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-number.prototype.toprecision
+description: >
+  Throws a RangeError if precision cannot be coerced to a number in range.
+info: |
+  Let p be ? ToInteger(precision).
+  If x is not finite, return ! Number::toString(x).
+  If p < 1 or p > 100, throw a RangeError exception.
+
+features: [Symbol]
+---*/
+
+var toPrecision = Number.prototype.toPrecision;
+
+assert.throws(RangeError, function() {
+  toPrecision.call(1, function() {});
+}, "`function() {}` doesn't coerce into a number in range (1-100)");
+
+assert.throws(RangeError, function() {
+  toPrecision.call(1, NaN);
+}, "NaN doesn't coerce into a number in range (1-100)");
+
+assert.throws(RangeError, function() {
+  toPrecision.call(1, {});
+}, "{} doesn't coerce into a number in range (1-100)");