mirror of
https://github.com/fmtlib/fmt.git
synced 2026-05-05 12:04:11 +02:00
FMT_EXPLICIT -> explicit, FMT_NULL -> nullptr
This commit is contained in:
Victor Zverovich
+45
-40
@@ -3,36 +3,36 @@
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TEST(StdFormatTest, Escaping) {
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using namespace std;
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string s = format("{0}-{{", 8); // s == "8-{"
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string s = format("{0}-{{", 8); // s == "8-{"
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EXPECT_EQ(s, "8-{");
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}
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TEST(StdFormatTest, Indexing) {
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using namespace std;
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string s0 = format("{} to {}", "a", "b"); // OK: automatic indexing
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string s1 = format("{1} to {0}", "a", "b"); // OK: manual indexing
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string s0 = format("{} to {}", "a", "b"); // OK: automatic indexing
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string s1 = format("{1} to {0}", "a", "b"); // OK: manual indexing
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EXPECT_EQ(s0, "a to b");
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EXPECT_EQ(s1, "b to a");
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// Error: mixing automatic and manual indexing
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EXPECT_THROW(string s2 = format("{0} to {}", "a", "b"), std::format_error);
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// Error: mixing automatic and manual indexing
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EXPECT_THROW(string s3 = format("{} to {1}", "a", "b"), std::format_error);
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// Error: mixing automatic and manual indexing
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EXPECT_THROW(string s2 = format("{0} to {}", "a", "b"), std::format_error);
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// Error: mixing automatic and manual indexing
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EXPECT_THROW(string s3 = format("{} to {1}", "a", "b"), std::format_error);
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}
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TEST(StdFormatTest, Alignment) {
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using namespace std;
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char c = 120;
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string s0 = format("{:6}", 42); // s0 == " 42"
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string s1 = format("{:6}", 'x'); // s1 == "x "
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string s2 = format("{:*<6}", 'x'); // s2 == "x*****"
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string s3 = format("{:*>6}", 'x'); // s3 == "*****x"
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string s4 = format("{:*^6}", 'x'); // s4 == "**x***"
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string s0 = format("{:6}", 42); // s0 == " 42"
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string s1 = format("{:6}", 'x'); // s1 == "x "
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string s2 = format("{:*<6}", 'x'); // s2 == "x*****"
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string s3 = format("{:*>6}", 'x'); // s3 == "*****x"
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string s4 = format("{:*^6}", 'x'); // s4 == "**x***"
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// Error: '=' with charT and no integer presentation type
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EXPECT_THROW(string s5 = format("{:=6}", 'x'), std::format_error);
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string s6 = format("{:6d}", c); // s6 == " 120"
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string s7 = format("{:=+06d}", c); // s7 == "+00120"
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string s8 = format("{:0=#6x}", 0xa); // s8 == "0x000a"
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string s9 = format("{:6}", true); // s9 == "true "
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string s6 = format("{:6d}", c); // s6 == " 120"
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string s7 = format("{:=+06d}", c); // s7 == "+00120"
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string s8 = format("{:0=#6x}", 0xa); // s8 == "0x000a"
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string s9 = format("{:6}", true); // s9 == "true "
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EXPECT_EQ(s0, " 42");
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EXPECT_EQ(s1, "x ");
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EXPECT_EQ(s2, "x*****");
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@@ -50,8 +50,10 @@ TEST(StdFormatTest, Float) {
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double nan = numeric_limits<double>::quiet_NaN();
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string s0 = format("{0:} {0:+} {0:-} {0: }", 1); // s0 == "1 +1 1 1"
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string s1 = format("{0:} {0:+} {0:-} {0: }", -1); // s1 == "-1 -1 -1 -1"
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string s2 = format("{0:} {0:+} {0:-} {0: }", inf); // s2 == "inf +inf inf inf"
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string s3 = format("{0:} {0:+} {0:-} {0: }", nan); // s3 == "nan +nan nan nan"
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string s2 =
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format("{0:} {0:+} {0:-} {0: }", inf); // s2 == "inf +inf inf inf"
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string s3 =
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format("{0:} {0:+} {0:-} {0: }", nan); // s3 == "nan +nan nan nan"
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EXPECT_EQ(s0, "1 +1 1 1");
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EXPECT_EQ(s1, "-1 -1 -1 -1");
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EXPECT_EQ(s2, "inf +inf inf inf");
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@@ -60,10 +62,10 @@ TEST(StdFormatTest, Float) {
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TEST(StdFormatTest, Int) {
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using namespace std;
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string s0 = format("{}", 42); // s0 == "42"
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string s1 = format("{0:b} {0:d} {0:o} {0:x}", 42); // s1 == "101010 42 52 2a"
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string s2 = format("{0:#x} {0:#X}", 42); // s2 == "0x2a 0X2A"
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string s3 = format("{:n}", 1234); // s3 == "1,234" (depends on the locale)
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string s0 = format("{}", 42); // s0 == "42"
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string s1 = format("{0:b} {0:d} {0:o} {0:x}", 42); // s1 == "101010 42 52 2a"
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string s2 = format("{0:#x} {0:#X}", 42); // s2 == "0x2a 0X2A"
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string s3 = format("{:n}", 1234); // s3 == "1,234" (depends on the locale)
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EXPECT_EQ(s0, "42");
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EXPECT_EQ(s1, "101010 42 52 2a");
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EXPECT_EQ(s2, "0x2a 0X2A");
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@@ -74,9 +76,9 @@ TEST(StdFormatTest, Int) {
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enum color { red, green, blue };
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const char* color_names[] = { "red", "green", "blue" };
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const char* color_names[] = {"red", "green", "blue"};
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template<> struct std::formatter<color> : std::formatter<const char*> {
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template <> struct std::formatter<color> : std::formatter<const char*> {
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auto format(color c, format_context& ctx) {
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return formatter<const char*>::format(color_names[c], ctx);
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}
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@@ -85,10 +87,12 @@ template<> struct std::formatter<color> : std::formatter<const char*> {
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struct err {};
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TEST(StdFormatTest, Formatter) {
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std::string s0 = std::format("{}", 42); // OK: library-provided formatter
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//std::string s1 = std::format("{}", L"foo"); // Ill-formed: disabled formatter
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std::string s2 = std::format("{}", red); // OK: user-provided formatter
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//std::string s3 = std::format("{}", err{}); // Ill-formed: disabled formatter
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std::string s0 = std::format("{}", 42); // OK: library-provided formatter
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// std::string s1 = std::format("{}", L"foo"); // Ill-formed: disabled
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// formatter
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std::string s2 = std::format("{}", red); // OK: user-provided formatter
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// std::string s3 = std::format("{}", err{}); // Ill-formed: disabled
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// formatter
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EXPECT_EQ(s0, "42");
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EXPECT_EQ(s2, "red");
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}
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@@ -97,15 +101,14 @@ struct S {
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int value;
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};
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template<> struct std::formatter<S> {
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template <> struct std::formatter<S> {
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size_t width_arg_id = 0;
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// Parses a width argument id in the format { <digit> }.
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constexpr auto parse(format_parse_context& ctx) {
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auto iter = ctx.begin();
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auto get_char = [&]() { return iter != ctx.end() ? *iter : 0; };
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if (get_char() != '{')
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return iter;
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if (get_char() != '{') return iter;
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++iter;
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char c = get_char();
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if (!isdigit(c) || (++iter, get_char()) != '}')
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@@ -117,20 +120,22 @@ template<> struct std::formatter<S> {
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// Formats S with width given by the argument width_arg_id.
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auto format(S s, format_context& ctx) {
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int width = visit_format_arg([](auto value) -> int {
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if constexpr (!is_integral_v<decltype(value)>)
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throw format_error("width is not integral");
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else if (value < 0 || value > numeric_limits<int>::max())
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throw format_error("invalid width");
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else
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return value;
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}, ctx.arg(width_arg_id));
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int width = visit_format_arg(
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[](auto value) -> int {
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if constexpr (!is_integral_v<decltype(value)>)
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throw format_error("width is not integral");
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else if (value < 0 || value > numeric_limits<int>::max())
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throw format_error("invalid width");
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else
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return value;
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},
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ctx.arg(width_arg_id));
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return format_to(ctx.out(), "{0:{1}}", s.value, width);
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}
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};
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TEST(StdFormatTest, Parsing) {
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std::string s = std::format("{0:{1}}", S{42}, 10); // s == " 42"
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std::string s = std::format("{0:{1}}", S{42}, 10); // s == " 42"
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EXPECT_EQ(s, " 42");
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}
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