75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
// Formatting library for C++ - Grisu tests
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//
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// Copyright (c) 2012 - present, Victor Zverovich
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// All rights reserved.
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//
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// For the license information refer to format.h.
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#include "fmt/format.h"
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#include "gtest.h"
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static bool reported_skipped;
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#undef TEST
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#define TEST(test_fixture, test_name) \
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void test_fixture##test_name(); \
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GTEST_TEST(test_fixture, test_name) { \
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if (FMT_USE_GRISU) { \
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test_fixture##test_name(); \
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} else if (!reported_skipped) { \
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reported_skipped = true; \
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fmt::print("Skipping Grisu tests.\n"); \
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} \
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} \
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void test_fixture##test_name()
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TEST(GrisuTest, NaN) {
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auto nan = std::numeric_limits<double>::quiet_NaN();
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EXPECT_EQ("nan", fmt::format("{}", nan));
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EXPECT_EQ("-nan", fmt::format("{}", -nan));
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}
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TEST(GrisuTest, Inf) {
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auto inf = std::numeric_limits<double>::infinity();
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EXPECT_EQ("inf", fmt::format("{}", inf));
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EXPECT_EQ("-inf", fmt::format("{}", -inf));
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}
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TEST(GrisuTest, Zero) { EXPECT_EQ("0.0", fmt::format("{}", 0.0)); }
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TEST(GrisuTest, Round) {
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EXPECT_EQ("1.9156918820264798e-56",
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fmt::format("{}", 1.9156918820264798e-56));
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EXPECT_EQ("0.0000", fmt::format("{:.4f}", 7.2809479766055470e-15));
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}
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TEST(GrisuTest, Prettify) {
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EXPECT_EQ("0.0001", fmt::format("{}", 1e-4));
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EXPECT_EQ("1e-05", fmt::format("{}", 1e-5));
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EXPECT_EQ("9.999e-05", fmt::format("{}", 9.999e-5));
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EXPECT_EQ("10000000000.0", fmt::format("{}", 1e10));
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EXPECT_EQ("100000000000.0", fmt::format("{}", 1e11));
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EXPECT_EQ("12340000000.0", fmt::format("{}", 1234e7));
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EXPECT_EQ("12.34", fmt::format("{}", 1234e-2));
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EXPECT_EQ("0.001234", fmt::format("{}", 1234e-6));
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EXPECT_EQ("0.1", fmt::format("{}", 0.1f));
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EXPECT_EQ("0.10000000149011612", fmt::format("{}", double(0.1f)));
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}
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TEST(GrisuTest, ZeroPrecision) { EXPECT_EQ("1", fmt::format("{:.0}", 1.0)); }
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TEST(GrisuTest, Fallback) {
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EXPECT_EQ("1e+23", fmt::format("{}", 1e23));
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EXPECT_EQ("9e-265", fmt::format("{}", 9e-265));
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EXPECT_EQ("5.423717798060526e+125",
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fmt::format("{}", 5.423717798060526e+125));
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EXPECT_EQ("1.372371880954233e-288",
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fmt::format("{}", 1.372371880954233e-288));
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EXPECT_EQ("55388492.622190244", fmt::format("{}", 55388492.622190244));
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EXPECT_EQ("2.2506787569811123e-253",
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fmt::format("{}", 2.2506787569811123e-253));
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EXPECT_EQ("1103618912042992.8", fmt::format("{}", 1103618912042992.8));
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// pow(2, -25) - assymetric boundaries:
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EXPECT_EQ("2.9802322387695312e-08",
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fmt::format("{}", 2.9802322387695312e-08));
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}
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