iOS 13 : Space grouping separator changed

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We use NumberFormatter class to format some amounts in the app. Since we migrated on iOS 13, it seems that the groupingSeparator space used for the Locale fr_FR changed.

We have tests on formatted strings amounts such as :

var amount = "1000"
XCTAssertEqual(amount.formattedValue, "1 000,00")

On iOS < 13, This test succeeds. But if we launch test on iOS > 13, this test will fail.

The reason is because the type of space used for the groupingSeparator property of NumberFormatter in iOS 13 has changed so 1 000,00 will not be equal to 1 000,00 according the space grouping separator which is used.

Any idea to always use the correct space grouping separator according the current iOS version ?

Edit : We found that the used space on iOS 13 is now the NARROW NO-BREAK SPACE

Edit 2 : The currencyGroupingSeparator has also changed with the NNBSP, all currency grouping separator have been replaced with this new one.

numberformatter swift objective-c ios
1 Answers

Ok finally found a solution :

  1. Defined an extension of String which replace all new spaces of the string by the original white space.

    public extension String {
    var originalWhiteSpaced: String {
            let narrowNonBreakingSpace = "\u{202F}"
            let nonBreakingSpace = "\u{00a0}"

        return self
            .replacingOccurrences(of: narrowNonBreakingSpace, with: " ")
            .replacingOccurrences(of: nonBreakingSpace, with: " ")
    }}

And use it in the tests : 

func testIsFormattingOfAmountCurrencyCorrectWhenAmountIsNegative() {
    let actualResult = formatter.formatAmountCurrency(-123472).originalWhiteSpaced
    let expectedResult = "- 123 472,00 €"

    XCTAssertEqual(actualResult, expectedResult)
}
user_47330670
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