mirror of
https://github.com/fmtlib/fmt.git
synced 2025-10-31 06:01:41 +01:00
298 lines
12 KiB
C++
298 lines
12 KiB
C++
/*
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Formatting library tests.
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Author: Victor Zverovich
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*/
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#include <cfloat>
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#include <climits>
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#include <cstring>
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#include <gtest/gtest.h>
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#include "format.h"
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using std::size_t;
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using std::sprintf;
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using fmt::Formatter;
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using fmt::Format;
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using fmt::FormatError;
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#define FORMAT_TEST_THROW_(statement, expected_exception, message, fail) \
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GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
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if (::testing::internal::ConstCharPtr gtest_msg = "") { \
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bool gtest_caught_expected = false; \
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std::string actual_message; \
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try { \
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GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
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} \
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catch (expected_exception const& e) { \
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gtest_caught_expected = true; \
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actual_message = e.what(); \
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} \
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catch (...) { \
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gtest_msg.value = \
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"Expected: " #statement " throws an exception of type " \
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#expected_exception ".\n Actual: it throws a different type."; \
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goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
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} \
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if (!gtest_caught_expected) { \
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gtest_msg.value = \
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"Expected: " #statement " throws an exception of type " \
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#expected_exception ".\n Actual: it throws nothing."; \
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goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
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} else if (actual_message != message) {\
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gtest_msg.value = \
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"Expected: " #statement " throws an exception of type " \
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#expected_exception " with message \"" message "\"."; \
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goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
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} \
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} else \
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GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__): \
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fail(gtest_msg.value)
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#define EXPECT_THROW_MSG(statement, expected_exception, expected_message) \
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FORMAT_TEST_THROW_(statement, expected_exception, expected_message, \
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GTEST_NONFATAL_FAILURE_)
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class TestString {
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private:
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std::string value_;
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public:
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explicit TestString(const char *value = "") : value_(value) {}
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friend std::ostream &operator<<(std::ostream &os, const TestString &s) {
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os << s.value_;
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return os;
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}
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};
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TEST(FormatterTest, NoArgs) {
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EXPECT_EQ("abracadabra", str(Format("{0}{1}{0}") << "abra" << "cad"));
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EXPECT_EQ("test", str(Format("test")));
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}
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TEST(FormatterTest, Args) {
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EXPECT_EQ("42", str(Format("{0}") << 42));
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EXPECT_EQ("before 42", str(Format("before {0}") << 42));
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EXPECT_EQ("42 after", str(Format("{0} after") << 42));
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EXPECT_EQ("before 42 after", str(Format("before {0} after") << 42));
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EXPECT_EQ("answer = 42", str(Format("{0} = {1}") << "answer" << 42));
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EXPECT_EQ("42 is the answer", str(Format("{1} is the {0}") << "answer" << 42));
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EXPECT_EQ("abracadabra", str(Format("{0}{1}{0}") << "abra" << "cad"));
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}
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TEST(FormatterTest, ArgErrors) {
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EXPECT_THROW_MSG(Format("{"), FormatError, "unmatched '{' in format");
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EXPECT_THROW_MSG(Format("{}"), FormatError,
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"missing argument index in format string");
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EXPECT_THROW_MSG(Format("{0"), FormatError, "unmatched '{' in format");
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EXPECT_THROW_MSG(Format("{0}"), std::out_of_range,
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"argument index is out of range in format");
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char format[256];
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std::sprintf(format, "{%u", UINT_MAX);
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EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
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std::sprintf(format, "{%u}", UINT_MAX);
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EXPECT_THROW_MSG(Format(format), std::out_of_range,
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"argument index is out of range in format");
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if (ULONG_MAX > UINT_MAX) {
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std::sprintf(format, "{%lu", UINT_MAX + 1l);
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EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
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std::sprintf(format, "{%lu}", UINT_MAX + 1l);
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EXPECT_THROW_MSG(Format(format),
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FormatError, "number is too big in format");
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} else {
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std::sprintf(format, "{%u0", UINT_MAX);
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EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
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std::sprintf(format, "{%u0}", UINT_MAX);
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EXPECT_THROW_MSG(Format(format),
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FormatError, "number is too big in format");
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}
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}
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TEST(FormatterTest, EmptySpecs) {
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EXPECT_EQ("42", str(Format("{0:}") << 42));
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}
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TEST(FormatterTest, PlusFlag) {
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EXPECT_EQ("+42", str(Format("{0:+}") << 42));
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EXPECT_EQ("-42", str(Format("{0:+}") << -42));
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EXPECT_EQ("+42", str(Format("{0:+}") << 42));
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EXPECT_THROW_MSG(Format("{0:+}") << 42u,
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FormatError, "format specifier '+' requires signed argument");
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EXPECT_EQ("+42", str(Format("{0:+}") << 42l));
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EXPECT_THROW_MSG(Format("{0:+}") << 42ul,
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FormatError, "format specifier '+' requires signed argument");
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EXPECT_EQ("+42", str(Format("{0:+}") << 42.0));
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EXPECT_EQ("+42", str(Format("{0:+}") << 42.0l));
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EXPECT_THROW_MSG(Format("{0:+") << 'c',
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FormatError, "unmatched '{' in format");
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EXPECT_THROW_MSG(Format("{0:+}") << 'c',
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FormatError, "format specifier '+' requires numeric argument");
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EXPECT_THROW_MSG(Format("{0:+}") << "abc",
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FormatError, "format specifier '+' requires numeric argument");
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EXPECT_THROW_MSG(Format("{0:+}") << L"abc",
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FormatError, "format specifier '+' requires numeric argument");
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EXPECT_THROW_MSG(Format("{0:+}") << reinterpret_cast<void*>(0x42),
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FormatError, "format specifier '+' requires numeric argument");
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EXPECT_THROW_MSG(Format("{0:+}") << TestString(),
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FormatError, "format specifier '+' requires numeric argument");
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}
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TEST(FormatterTest, ZeroFlag) {
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EXPECT_EQ("42", str(Format("{0:0}") << 42));
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EXPECT_EQ("-0042", str(Format("{0:05}") << -42));
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EXPECT_EQ("00042", str(Format("{0:05}") << 42u));
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EXPECT_EQ("-0042", str(Format("{0:05}") << -42l));
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EXPECT_EQ("00042", str(Format("{0:05}") << 42ul));
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EXPECT_EQ("-0042", str(Format("{0:05}") << -42.0));
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EXPECT_EQ("-0042", str(Format("{0:05}") << -42.0l));
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EXPECT_THROW_MSG(Format("{0:0") << 'c',
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FormatError, "unmatched '{' in format");
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EXPECT_THROW_MSG(Format("{0:05}") << 'c',
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FormatError, "format specifier '0' requires numeric argument");
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EXPECT_THROW_MSG(Format("{0:05}") << "abc",
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FormatError, "format specifier '0' requires numeric argument");
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EXPECT_THROW_MSG(Format("{0:05}") << L"abc",
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FormatError, "format specifier '0' requires numeric argument");
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EXPECT_THROW_MSG(Format("{0:05}") << reinterpret_cast<void*>(0x42),
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FormatError, "format specifier '0' requires numeric argument");
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EXPECT_THROW_MSG(Format("{0:05}") << TestString(),
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FormatError, "format specifier '0' requires numeric argument");
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}
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TEST(FormatterTest, Width) {
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char format[256];
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if (ULONG_MAX > UINT_MAX) {
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std::sprintf(format, "{0:%lu", INT_MAX + 1l);
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EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
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std::sprintf(format, "{0:%lu}", UINT_MAX + 1l);
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EXPECT_THROW_MSG(Format(format) << 0,
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FormatError, "number is too big in format");
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} else {
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std::sprintf(format, "{0:%u0", UINT_MAX);
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EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
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std::sprintf(format, "{0:%u0}", UINT_MAX);
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EXPECT_THROW_MSG(Format(format) << 0,
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FormatError, "number is too big in format");
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}
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std::sprintf(format, "{0:%u", INT_MAX + 1u);
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EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
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std::sprintf(format, "{0:%u}", INT_MAX + 1u);
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EXPECT_THROW_MSG(Format(format) << 0,
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FormatError, "number is too big in format");
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EXPECT_EQ(" -42", str(Format("{0:4}") << -42));
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EXPECT_EQ(" 42", str(Format("{0:5}") << 42u));
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EXPECT_EQ(" -42", str(Format("{0:6}") << -42l));
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EXPECT_EQ(" 42", str(Format("{0:7}") << 42ul));
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EXPECT_EQ(" -1.23", str(Format("{0:8}") << -1.23));
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EXPECT_EQ(" -1.23", str(Format("{0:9}") << -1.23l));
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EXPECT_EQ(" 0xcafe",
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str(Format("{0:10}") << reinterpret_cast<void*>(0xcafe)));
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EXPECT_EQ("x ", str(Format("{0:11}") << 'x'));
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EXPECT_EQ("narrow ", str(Format("{0:12}") << "narrow"));
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EXPECT_EQ("wide ", str(Format("{0:13}") << L"wide"));
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EXPECT_EQ("test ", str(Format("{0:14}") << TestString("test")));
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}
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TEST(FormatterTest, Precision) {
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char format[256];
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if (ULONG_MAX > UINT_MAX) {
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std::sprintf(format, "{0:.%lu", INT_MAX + 1l);
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EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
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std::sprintf(format, "{0:.%lu}", UINT_MAX + 1l);
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EXPECT_THROW_MSG(Format(format) << 0,
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FormatError, "number is too big in format");
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} else {
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std::sprintf(format, "{0:.%u0", UINT_MAX);
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EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
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std::sprintf(format, "{0:.%u0}", UINT_MAX);
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EXPECT_THROW_MSG(Format(format) << 0,
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FormatError, "number is too big in format");
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}
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std::sprintf(format, "{0:.%u", INT_MAX + 1u);
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EXPECT_THROW_MSG(Format(format), FormatError, "unmatched '{' in format");
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std::sprintf(format, "{0:.%u}", INT_MAX + 1u);
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EXPECT_THROW_MSG(Format(format) << 0,
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FormatError, "number is too big in format");
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EXPECT_THROW_MSG(Format("{0:.") << 0,
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FormatError, "unmatched '{' in format");
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EXPECT_THROW_MSG(Format("{0:.}") << 0,
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FormatError, "missing precision in format");
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EXPECT_THROW_MSG(Format("{0:.2") << 0,
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FormatError, "unmatched '{' in format");
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EXPECT_THROW_MSG(Format("{0:.2}") << 42,
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FormatError, "precision specifier requires floating-point type");
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EXPECT_EQ("42.00", str(Format("{0:.2f}") << 42));
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EXPECT_THROW_MSG(Format("{0:.2}") << 42u,
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FormatError, "precision specifier requires floating-point type");
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EXPECT_EQ("42.00", str(Format("{0:.2f}") << 42u));
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EXPECT_THROW_MSG(Format("{0:.2}") << 42l,
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FormatError, "precision specifier requires floating-point type");
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EXPECT_EQ("42.00", str(Format("{0:.2f}") << 42l));
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EXPECT_THROW_MSG(Format("{0:.2}") << 42ul,
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FormatError, "precision specifier requires floating-point type");
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EXPECT_EQ("42.00", str(Format("{0:.2f}") << 42ul));
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EXPECT_EQ("1.2", str(Format("{0:.2}") << 1.2345));
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EXPECT_EQ("1.2", str(Format("{0:.2}") << 1.2345l));
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EXPECT_THROW_MSG(Format("{0:.2}") << reinterpret_cast<void*>(0xcafe),
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FormatError, "precision specifier requires floating-point type");
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EXPECT_THROW_MSG(Format("{0:.2f}") << reinterpret_cast<void*>(0xcafe),
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FormatError, "precision specifier requires floating-point type");
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EXPECT_THROW_MSG(Format("{0:.2}") << 'x',
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FormatError, "precision specifier requires floating-point type");
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EXPECT_THROW_MSG(Format("{0:.2f}") << 'x',
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FormatError, "precision specifier requires floating-point type");
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EXPECT_THROW_MSG(Format("{0:.2}") << "str",
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FormatError, "precision specifier requires floating-point type");
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EXPECT_THROW_MSG(Format("{0:.2f}") << "str",
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FormatError, "precision specifier requires floating-point type");
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EXPECT_THROW_MSG(Format("{0:.2}") << L"str",
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FormatError, "precision specifier requires floating-point type");
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EXPECT_THROW_MSG(Format("{0:.2f}") << L"str",
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FormatError, "precision specifier requires floating-point type");
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EXPECT_THROW_MSG(Format("{0:.2}") << TestString(),
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FormatError, "precision specifier requires floating-point type");
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EXPECT_THROW_MSG(Format("{0:.2f}") << TestString(),
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FormatError, "precision specifier requires floating-point type");
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}
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TEST(FormatterTest, FormatInt) {
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EXPECT_EQ("42", str(Format("{0}") << 42));
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EXPECT_EQ("-1234", str(Format("{0}") << -1234));
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std::ostringstream os;
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os << INT_MIN;
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EXPECT_EQ(os.str(), str(Format("{0}") << INT_MIN));
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os.str(std::string());
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os << INT_MAX;
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EXPECT_EQ(os.str(), str(Format("{0}") << INT_MAX));
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}
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TEST(FormatterTest, FormatChar) {
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EXPECT_EQ("a*b", str(Format("{0}{1}{2}") << 'a' << '*' << 'b'));
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}
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TEST(FormatterTest, FormatString) {
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EXPECT_EQ("test", str(Format("{0}") << std::string("test")));
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}
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TEST(FormatterTest, FormatCustomArg) {
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EXPECT_EQ("a string", str(Format("{0}") << TestString("a string")));
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}
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TEST(FormatterTest, FormatStringFromSpeedTest) {
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EXPECT_EQ("1.2340000000:0042:+3.13:str:0x3e8:X:%",
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str(Format("{0:0.10f}:{1:04}:{2:+g}:{3}:{4}:{5}:%")
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<< 1.234 << 42 << 3.13 << "str"
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<< reinterpret_cast<void*>(1000) << 'X'));
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}
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// TODO: more tests
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