#60: more tests for non-standard locales

Author: vpiotr

include/decimal.h

@@ -172,6 +172,7 @@ typedef xdouble cross_float;
 // ----------------------------------------------------------------------------
 // Forward class definitions
 // ----------------------------------------------------------------------------
+class basic_decimal_format;
 
 // ----------------------------------------------------------------------------
 // Constants
@@ -723,6 +724,10 @@ class decimal {
         fromString(value, *this);
     }
 
+    explicit decimal(const std::string &value, const basic_decimal_format &format) {
+        fromString(value, format, *this);
+    }
+
 #ifdef DEC_NO_CPP11
     ~decimal() {
     }

tests/decimalTestString.cpp

@@ -108,4 +108,93 @@ BOOST_AUTO_TEST_CASE(decimalItalianoParsing) {
     ret.unpack(beforeValue, afterValue);
     BOOST_CHECK_EQUAL(beforeValue, 1234);
     BOOST_CHECK_EQUAL(afterValue, 56);
+}
+
+BOOST_AUTO_TEST_CASE(decimalToStringWithGlobalCLocale) {
+    std::locale prior_cout_locale = std::cout.getloc();
+    std::locale prior_locale = std::locale::global(std::locale("C"));
+
+    dec::decimal<7> value = dec::decimal<7>::buildWithExponent(1234567890987L, -7);
+    std::string expected = "123456.7890987";
+
+    BOOST_CHECK_EQUAL(dec::toString(value), expected);
+
+    std::cout.imbue( prior_cout_locale );
+    std::locale::global(prior_locale);
+}
+
+BOOST_AUTO_TEST_CASE(decimalToStringWithGlobalItLocale) {
+    std::locale prior_cout_locale = std::cout.getloc();
+    std::locale italiano_locale(std::cout.getloc(), new italiano_separators);
+    std::locale prior_locale = std::locale::global(italiano_locale);
+
+    dec::decimal<7> value = dec::decimal<7>::buildWithExponent(1234567890987L, -7);
+    std::string expected = "123.456,7890987";
+
+    BOOST_CHECK_EQUAL(dec::toString(value), expected);
+
+    std::cout.imbue(prior_cout_locale);
+    std::locale::global(prior_locale);
+}
+
+BOOST_AUTO_TEST_CASE(decimalToStringWithGlobalItLocaleAndProvidedFormat) {
+    std::locale prior_cout_locale = std::cout.getloc();
+    std::locale italiano_locale(std::cout.getloc(), new italiano_separators);
+    std::locale prior_locale = std::locale::global(italiano_locale);
+
+    dec::decimal_format format('.', '\0');
+
+    dec::decimal<7> value = dec::decimal<7>::buildWithExponent(1234567890987L, -7);
+    std::string expected = "123456.7890987";
+
+    BOOST_CHECK_EQUAL(dec::toString(value, format), expected);
+
+    std::cout.imbue(prior_cout_locale);
+    std::locale::global(prior_locale);
+}
+
+BOOST_AUTO_TEST_CASE(decimalFromStringWithGlobalCLocale) {
+    std::locale prior_cout_locale = std::cout.getloc();
+    std::locale prior_locale = std::locale::global(std::locale("C"));
+
+    std::string value = "123456.7890987";
+    dec::decimal<7> expected = dec::decimal<7>::buildWithExponent(1234567890987L, -7);
+    dec::decimal<7> d7(value);
+
+    BOOST_CHECK_EQUAL(d7, expected);
+
+    std::cout.imbue(prior_cout_locale);
+    std::locale::global(prior_locale);
+}
+
+BOOST_AUTO_TEST_CASE(decimalFromStringWithGlobalItLocale) {
+    std::locale prior_cout_locale = std::cout.getloc();
+    std::locale italiano_locale(std::cout.getloc(), new italiano_separators);
+    std::locale prior_locale = std::locale::global(italiano_locale);
+
+    std::string value = "123.456,7890987";
+    dec::decimal<7> expected = dec::decimal<7>::buildWithExponent(1234567890987L, -7);
+    dec::decimal<7> d7(value);
+
+    BOOST_CHECK_EQUAL(d7, expected);
+
+    std::cout.imbue(prior_cout_locale);
+    std::locale::global(prior_locale);
+}
+
+BOOST_AUTO_TEST_CASE(decimalFromStringWithGlobalItLocaleAndProvidedFormat) {
+    std::locale prior_cout_locale = std::cout.getloc();
+    std::locale italiano_locale(std::cout.getloc(), new italiano_separators);
+    std::locale prior_locale = std::locale::global(italiano_locale);
+
+    dec::decimal_format cformat('.', '\0');
+
+    std::string value = "123456.7890987";
+    dec::decimal<7> expected = dec::decimal<7>::buildWithExponent(1234567890987L, -7);
+    dec::decimal<7> d7(value, cformat);
+
+    BOOST_CHECK_EQUAL(d7, expected);
+
+    std::cout.imbue(prior_cout_locale);
+    std::locale::global(prior_locale);
 }

tests/decimalTestWithExponent.cpp

@@ -44,5 +44,15 @@
     BOOST_CHECK_EQUAL(dec::decimal<4>::buildWithExponent(temp, 111215, -5), dec::decimal<4>("1.1122"));
     BOOST_CHECK_EQUAL(dec::decimal<4>::buildWithExponent(temp, -111213, -5), dec::decimal<4>("-1.1121"));
     BOOST_CHECK_EQUAL(dec::decimal<4>::buildWithExponent(temp, -111215, -5), dec::decimal<4>("-1.1122"));
+
+    // check overflow
+    BOOST_CHECK_EQUAL(dec::decimal<0>::buildWithExponent(1, 23), dec::decimal<0>("0"));
+    BOOST_CHECK_EQUAL(dec::decimal<4>::buildWithExponent(1, 23), dec::decimal<4>("0"));
+    BOOST_CHECK_EQUAL(dec::decimal<4>::buildWithExponent(1, 19), dec::decimal<4>("0"));
+    BOOST_CHECK_EQUAL(dec::decimal<4>::buildWithExponent(1, 15), dec::decimal<4>("0"));
+
+    // check underflow
+    BOOST_CHECK_EQUAL(dec::decimal<4>::buildWithExponent(1, -19), dec::decimal<4>("0"));
+    BOOST_CHECK_EQUAL(dec::decimal<4>::buildWithExponent(1, -15), dec::decimal<4>("0"));
 }