Java implementation of PaymentRequest mojo service

chrome/android/junit/src/org/chromium/chrome/browser/payments/CurrencyStringFormatterTest.java

Index: chrome/android/junit/src/org/chromium/chrome/browser/payments/CurrencyStringFormatterTest.java
diff --git a/chrome/android/junit/src/org/chromium/chrome/browser/payments/CurrencyStringFormatterTest.java b/chrome/android/junit/src/org/chromium/chrome/browser/payments/CurrencyStringFormatterTest.java
new file mode 100644
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+++ b/chrome/android/junit/src/org/chromium/chrome/browser/payments/CurrencyStringFormatterTest.java
@@ -0,0 +1,136 @@
+// 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 org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameters;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Locale;
+
+/**
+ * Unit tests for the CurrencyStringFormatter class.
+ */
+@RunWith(Parameterized.class)
+public class CurrencyStringFormatterTest {
+    /**
+     * Unicode non-breaking space.
+     */
+    private static final String SPACE = "\u00A0";
+
+    private enum ExpectedValidity {
+        VALID_AMOUNT,
+        INVALID_AMOUNT_CURRENCY_CODE,
+        INVALID_AMOUNT_VALUE,
+    };
+
+    @Parameters
+    public static Collection<Object[]> data() {
+        return Arrays.asList(new Object[][] {
+            {"55.00", "USD", "en-US", "$ 55.00", ExpectedValidity.VALID_AMOUNT},
+            {"55.00", "USD", "en-CA", "$ 55.00", ExpectedValidity.VALID_AMOUNT},
+            {"55.00", "USD", "fr-CA", "$ 55,00", ExpectedValidity.VALID_AMOUNT},
+            {"55.00", "USD", "fr-FR", "$ 55,00", ExpectedValidity.VALID_AMOUNT},
+
+            // "EUR" becomes "€" on a mobile device.
+            {"55.00", "EUR", "en-US", "EUR 55.00", ExpectedValidity.VALID_AMOUNT},
+            {"55.00", "EUR", "en-CA", "EUR 55.00", ExpectedValidity.VALID_AMOUNT},
+            {"55.00", "EUR", "fr-CA", "EUR 55,00", ExpectedValidity.VALID_AMOUNT},
+            {"55.00", "EUR", "fr-FR", "EUR 55,00", ExpectedValidity.VALID_AMOUNT},
+
+            {"55.00", "CAD", "en-US", "CAD 55.00", ExpectedValidity.VALID_AMOUNT},
+            {"55.00", "CAD", "en-CA", "CAD 55.00", ExpectedValidity.VALID_AMOUNT},
+            {"55.00", "CAD", "fr-CA", "CAD 55,00", ExpectedValidity.VALID_AMOUNT},
+            {"55.00", "CAD", "fr-FR", "CAD 55,00", ExpectedValidity.VALID_AMOUNT},
+
+            // Unofficial ISO 4217 currency code.
+            {"55.00", "BTX", "en-US", "BTX 55.00", ExpectedValidity.VALID_AMOUNT},
+
+            {"55.5", "USD", "en-US", "$ 55.50", ExpectedValidity.VALID_AMOUNT},
+            {"55", "USD", "en-US", "$ 55.00", ExpectedValidity.VALID_AMOUNT},
+            {"123", "USD", "en-US", "$ 123.00", ExpectedValidity.VALID_AMOUNT},
+            {"1234", "USD", "en-US", "$ 1,234.00", ExpectedValidity.VALID_AMOUNT},
+
+            {"-123", "USD", "en-US", "$ -123.00", ExpectedValidity.VALID_AMOUNT},
+            {"-1234", "USD", "en-US", "$ -1,234.00", ExpectedValidity.VALID_AMOUNT},
+
+            {"123456789012345678901234567890.123456789012345678901234567890", "USD", "fr-FR",
+                    "$ 123" + SPACE + "456" + SPACE + "789" + SPACE + "012" + SPACE + "345"
+                            + SPACE + "678" + SPACE + "901" + SPACE + "234" + SPACE + "567"
+                            + SPACE + "890,123456789012345678901234567890",
+                    ExpectedValidity.VALID_AMOUNT},
+            {"123456789012345678901234567890.123456789012345678901234567890", "USD", "en-US",
+                    "$ 123,456,789,012,345,678,901,234,567,890.123456789012345678901234567890",
+                    ExpectedValidity.VALID_AMOUNT},
+
+            // Invalid amount currency codes.
+            {"55.00", "", "en-US", null, ExpectedValidity.INVALID_AMOUNT_CURRENCY_CODE},
+            {"55.00", "usd", "en-US", null, ExpectedValidity.INVALID_AMOUNT_CURRENCY_CODE},
+            {"55.00", "US8", "en-US", null, ExpectedValidity.INVALID_AMOUNT_CURRENCY_CODE},
+            {"55.00", "US", "en-US", null, ExpectedValidity.INVALID_AMOUNT_CURRENCY_CODE},
+            {"55.00", "USDR", "en-US", null, ExpectedValidity.INVALID_AMOUNT_CURRENCY_CODE},
+            {"55.00", "USDr", "en-US", null, ExpectedValidity.INVALID_AMOUNT_CURRENCY_CODE},
+
+            // Invalid amount values.
+            {"", "USD", "en-US", null, ExpectedValidity.INVALID_AMOUNT_VALUE},
+            {"-", "USD", "en-US", null, ExpectedValidity.INVALID_AMOUNT_VALUE},
+            {"notdigits", "USD", "en-US", null, ExpectedValidity.INVALID_AMOUNT_VALUE},
+            {"ALSONOTDIGITS", "USD", "en-US", null, ExpectedValidity.INVALID_AMOUNT_VALUE},
+            {"10.", "USD", "en-US", null, ExpectedValidity.INVALID_AMOUNT_VALUE},
+            {".99", "USD", "en-US", null, ExpectedValidity.INVALID_AMOUNT_VALUE},
+            {"10-", "USD", "en-US", null, ExpectedValidity.INVALID_AMOUNT_VALUE},
+            {"1-0", "USD", "en-US", null, ExpectedValidity.INVALID_AMOUNT_VALUE},
+            {"1.0.0", "USD", "en-US", null, ExpectedValidity.INVALID_AMOUNT_VALUE},
+            {"1/3", "USD", "en-US", null, ExpectedValidity.INVALID_AMOUNT_VALUE},
+        });
+    }
+
+    private final String mAmount;
+    private final String mCurrency;
+    private final String mLanguageTag;
+    private final String mExpectedFormatting;
+    private final ExpectedValidity mExpectedValidity;
+
+    public CurrencyStringFormatterTest(String amount, String currency, String languageTag,
+            String expectedFormatting, ExpectedValidity expectedValidity) {
+        mAmount = amount;
+        mCurrency = currency;
+        mLanguageTag = languageTag;
+        mExpectedFormatting = expectedFormatting;
+        mExpectedValidity = expectedValidity;
+    }
+
+    @Test
+    public void test() {
+        CurrencyStringFormatter formatter = new CurrencyStringFormatter(mCurrency,
+                Locale.forLanguageTag(mLanguageTag));
+
+        if (mExpectedValidity == ExpectedValidity.INVALID_AMOUNT_CURRENCY_CODE) {
+            Assert.assertFalse("\"" + mCurrency + "\" should be invalid currency code",
+                    formatter.isValidAmountCurrencyCode(mCurrency));
+        } else {
+            Assert.assertTrue("\"" + mCurrency + "\" should be valid currency code",
+                    formatter.isValidAmountCurrencyCode(mCurrency));
+        }
+
+        if (mExpectedValidity == ExpectedValidity.INVALID_AMOUNT_VALUE) {
+            Assert.assertFalse("\"" + mAmount + "\" should be invalid amount value",
+                    formatter.isValidAmountValue(mAmount));
+        } else {
+            Assert.assertTrue("\"" + mAmount + "\" should be valid amount value",
+                    formatter.isValidAmountValue(mAmount));
+        }
+
+        if (mExpectedValidity == ExpectedValidity.VALID_AMOUNT) {
+            Assert.assertEquals("\"" + mCurrency + "\" \"" + mAmount + "\" (\"" + mLanguageTag
+                            + "\" locale) should be formatted into \"" + mExpectedFormatting + "\"",
+                    mExpectedFormatting, formatter.format(mAmount));
+        }
+    }
+}