[Payment Request] Update the CurrencyStringFormatter to call the native impl.

chrome/android/javatests/src/org/chromium/chrome/browser/payments/CurrencyFormatterTest.java

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.payments;
+
+import android.support.test.filters.MediumTest;
+
+import junit.framework.Assert;
+
+import org.chromium.base.LocaleUtils;
+import org.chromium.content.browser.test.NativeLibraryTestBase;
+
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * A lightweight integration test for CurrencyFormatter to run on an Android device.
+ */
+public class CurrencyFormatterTest extends NativeLibraryTestBase {
+    /**
+     * Unicode non-breaking space.
+     */
+    private static final String SPACE = "\u00A0";
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        loadNativeLibraryAndInitBrowserProcess();
+    }
+
+    private static String longStringOfLength(int len) {
+        StringBuilder currency = new StringBuilder();
+        for (int i = 0; i < len; i++) {
+            currency.append("A");
+        }
+        return currency.toString();
+    }
+
+    @MediumTest
+    public void testMultipleConversions() throws Exception {
+        // Note, all spaces are expected to be unicode non-breaking spaces. Here they are shown as
+        // normal spaces.
+        List<Object[]> testCases = Arrays.asList(new Object[][] {
+                {"55.00", "USD", "en-US", "USD", "$55.00"},
+                {"55.00", "USD", "en-CA", "USD", "$55.00"},
+                {"55.00", "USD", "fr-CA", "USD", "55,00 $"},
+                {"55.00", "USD", "fr-FR", "USD", "55,00 $"},
+                {"1234", "USD", "fr-FR", "USD", "1 234,00 $"},
+
+                {"55.5", "USD", "en-US", "USD", "$55.50"}, {"55", "USD", "en-US", "USD", "$55.00"},
+                {"-123", "USD", "en-US", "USD", "-$123.00"},
+                {"-1234", "USD", "en-US", "USD", "-$1,234.00"},
+                {"0.1234", "USD", "en-US", "USD", "$0.1234"},
+
+                {"55.00", "EUR", "en-US", "EUR", "€55.00"},
+                {"55.00", "EUR", "en-CA", "EUR", "€55.00"},
+                {"55.00", "EUR", "fr-CA", "EUR", "55,00 €"},
+                {"55.00", "EUR", "fr-FR", "EUR", "55,00 €"},
+
+                {"55.00", "CAD", "en-US", "CAD", "$55.00"},
+                {"55.00", "CAD", "en-CA", "CAD", "$55.00"},
+                {"55.00", "CAD", "fr-CA", "CAD", "55,00 $"},
+                {"55.00", "CAD", "fr-FR", "CAD", "55,00 $"},
+
+                {"55", "JPY", "ja-JP", "JPY", "￥55"}, {"55.0", "JPY", "ja-JP", "JPY", "￥55"},
+                {"55.00", "JPY", "ja-JP", "JPY", "￥55"},
+                {"55.12", "JPY", "ja-JP", "JPY", "￥55.12"},
+                {"55.49", "JPY", "ja-JP", "JPY", "￥55.49"},
+                {"55.50", "JPY", "ja-JP", "JPY", "￥55.5"},
+                {"55.9999", "JPY", "ja-JP", "JPY", "￥55.9999"},
+
+                // Unofficial ISO 4217 currency code.
+                {"55.00", "BTX", "en-US", "BTX", "55.00"},
+                {"-0.00000001", "BTX", "en-US", "BTX", "-0.00000001"},
+                {"-55.00", "BTX", "fr-FR", "BTX", "-55,00"},
+
+                {"123456789012345678901234567890.123456789012345678901234567890", "USD", "fr-FR",
+                        "USD", "123 456 789 012 345 678 901 234 567 890,123456789 $"},
+                {"123456789012345678901234567890.123456789012345678901234567890", "USD", "en-US",
+                        "USD", "$123,456,789,012,345,678,901,234,567,890.123456789"},
+
+                // Any string of at most 2048 characters can be valid amount currency codes.
+                {"55.00", "", "en-US", "", "55.00"},
+                {"55.00", "ABCDEF", "en-US", "ABCDE\u2026", "55.00"},
+                // Currency code more than 6 character is formatted to first 5 characters and
+                // ellipsis. "\u2026" is unicode for ellipsis.
+                {"55.00", longStringOfLength(2048), "en-US", "AAAAA\u2026", "55.00"},
+        });
+
+        for (int i = 0; i < testCases.size(); i++) {
+            Object[] testCase = testCases.get(i);
+
+            String amount = (String) testCase[0];
+            String currency = (String) testCase[1];
+            String locale = (String) testCase[2];
+            String expectedCurrencyFormatting = (String) testCase[3];
+            String expectedAmountFormatting = (String) testCase[4];
+
+            CurrencyFormatter formatter =
+                    new CurrencyFormatter(currency, null, LocaleUtils.forLanguageTag(locale));
+
+            String formattedAmount = formatter.format(amount).replace(SPACE, " ");
+            Assert.assertEquals("\"" + currency + "\" \"" + amount + "\" (\"" + locale
+                            + "\" locale) should be formatted into \"" + expectedAmountFormatting
+                            + "\"",
+                    expectedAmountFormatting, formattedAmount);
+            Assert.assertEquals("\"" + currency + "\""
+                            + " should be formatted into \"" + expectedCurrencyFormatting + "\"",
+                    expectedCurrencyFormatting, formatter.getFormattedCurrencyCode());
+        }
+    }
+}