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Add tests for parsing number with exhaustive exponents and random signifcant

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This commit is contained in:
miloyip 2015-04-15 14:23:00 +08:00
parent 76d67b7eae
commit c69ff41fc2
1 changed files with 27 additions and 15 deletions
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42
test/unittest/readertest.cpp
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@ -302,28 +302,40 @@ static void TestParseDouble() {
"e-308",
2.2250738585072014e-308);
#if 0 // Very slow
static const unsigned count = 10000000;
// Random test for double
{
static const unsigned count = 1000; // Tested with 1000000 locally
Random r;
Reader reader; // Reusing reader to prevent heap allocation
for (unsigned i = 0; i < count; i++) {
internal::Double d;
do {
// Exhaustively test different exponents with random significant
for (uint64_t exp = 0; exp < 2047; exp++) {
;
for (unsigned i = 0; i < count; i++) {
// Need to call r() in two statements for cross-platform coherent sequence.
uint64_t u = uint64_t(r()) << 32;
uint64_t u = (exp << 52) | uint64_t(r() & 0x000FFFFF) << 32;
u |= uint64_t(r());
d = internal::Double(u);
} while (d.IsNan() || d.IsInf()/* || !d.IsNormal()*/); // Also work for subnormal now
internal::Double d = internal::Double(u);
char buffer[32];
*internal::dtoa(d.Value(), buffer) = '\0';
TEST_DOUBLE(fullPrecision, buffer, d.Value());
char buffer[32];
*internal::dtoa(d.Value(), buffer) = '\0';
StringStream s(buffer);
ParseDoubleHandler h;
ASSERT_EQ(kParseErrorNone, reader.Parse<fullPrecision ? kParseFullPrecisionFlag : 0>(s, h).Code());
EXPECT_EQ(1u, h.step_);
internal::Double a(h.actual_);
if (fullPrecision) {
EXPECT_EQ(d.Uint64Value(), a.Uint64Value());
if (d.Uint64Value() != a.Uint64Value())
printf(" String: %sn Actual: %.17gnExpected: %.17gn", buffer, h.actual_, d.Value());
}
else {
EXPECT_EQ(d.Sign(), a.Sign()); /* for 0.0 != -0.0 */
EXPECT_DOUBLE_EQ(d.Value(), h.actual_);
}
}
}
}
#endif
#undef TEST_DOUBLE
}
@ -651,7 +663,7 @@ TEST(Reader, ParseString_Error) {
TEST_STRINGENCODING_ERROR(UTF32<>, UTF8<>, unsigned, ARRAY('[', '\"', 0x110000, '\"', ']', '\0'));
// Malform ASCII sequence
TEST_STRINGENCODING_ERROR(ASCII<>, UTF8<>, char, ARRAY('[', '\"', 0x80, '\"', ']', '\0'));
TEST_STRINGENCODING_ERROR(ASCII<>, UTF8<>, char, ARRAY('[', '\"', char(0x80), '\"', ']', '\0'));
#undef ARRAY
#undef TEST_STRINGARRAY_ERROR