icu4c/source/test/intltest/numbertest_doubleconversion.cpp

// © 2017 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html

#include "unicode/utypes.h"

#if !UCONFIG_NO_FORMATTING

#include "numbertest.h"
#include "double-conversion.h"

using namespace double_conversion;

void DoubleConversionTest::runIndexedTest(int32_t index, UBool exec, const char *&name, char *) {
    if (exec) {
        logln("TestSuite DoubleConversionTest: ");
    }
    TESTCASE_AUTO_BEGIN;
        TESTCASE_AUTO(testDoubleConversionApi);
    TESTCASE_AUTO_END;
}

void DoubleConversionTest::testDoubleConversionApi() {
    double v = 87.65;
    char buffer[DoubleToStringConverter::kBase10MaximalLength + 1];
    bool sign;
    int32_t length;
    int32_t point;

    DoubleToStringConverter::DoubleToAscii(
        v,
        DoubleToStringConverter::DtoaMode::SHORTEST,
        0,
        buffer,
        sizeof(buffer),
        &sign,
        &length,
        &point
    );

    UnicodeString result(buffer, length);
    assertEquals("Digits", u"8765", result);
    assertEquals("Scale", 2, point);
}

#endif /* #if !UCONFIG_NO_FORMATTING */