mirror of
https://github.com/mozilla/gecko-dev.git
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269 lines
10 KiB
C++
269 lines
10 KiB
C++
/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// Newer versions of the Windows SDK define NAN differently than before,
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// which causes our tests to fail. Force the use of the old definition.
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#define _UCRT_NEGATIVE_NAN 1
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#include "mozilla/Printf.h"
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#include <cfloat>
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#include <cmath>
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#include <inttypes.h>
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#include <stdarg.h>
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#include <stddef.h>
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#if defined(__clang__)
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# pragma clang diagnostic push
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# pragma clang diagnostic ignored "-Wc++11-narrowing"
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#elif defined(__GNUC__)
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# pragma GCC diagnostic push
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# pragma GCC diagnostic ignored "-Wnarrowing"
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#endif
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namespace tiformat {
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#include "glibc_printf_tests/tiformat.c"
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}
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namespace tllformat {
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#include "glibc_printf_tests/tllformat.c"
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}
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#if defined(__clang__)
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# pragma clang diagnostic pop
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#elif defined(__GNUC__)
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# pragma GCC diagnostic pop
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#endif
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namespace tfformat {
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#include "glibc_printf_tests/tfformat.c"
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}
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// A simple implementation of PrintfTarget, just for testing
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// PrintfTarget::print.
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class TestPrintfTarget : public mozilla::PrintfTarget {
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public:
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static const char* test_string;
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TestPrintfTarget() : mOut(0) { memset(mBuffer, '\0', sizeof(mBuffer)); }
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~TestPrintfTarget() {
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MOZ_RELEASE_ASSERT(mOut == strlen(test_string));
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MOZ_RELEASE_ASSERT(strncmp(mBuffer, test_string, strlen(test_string)) == 0);
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}
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bool append(const char* sp, size_t len) override {
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if (mOut + len < sizeof(mBuffer)) {
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memcpy(&mBuffer[mOut], sp, len);
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}
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mOut += len;
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return true;
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}
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private:
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char mBuffer[100];
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size_t mOut;
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};
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const char* TestPrintfTarget::test_string = "test string";
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static void TestPrintfTargetPrint() {
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TestPrintfTarget checker;
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checker.print("test string");
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}
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// As of clang 14, __attribute__((printf)) doesn't allow %n on Android targets,
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// which is used in this test.
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static bool
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#ifndef __ANDROID__
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MOZ_FORMAT_PRINTF(5, 6)
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#endif
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check_print(const char* file, int line,
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bool (*cmp)(const char* a, const char* b), const char* expect,
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const char* fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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mozilla::SmprintfPointer output = mozilla::Vsmprintf(fmt, ap);
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va_end(ap);
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bool ret = output && cmp(output.get(), expect);
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if (!ret && strcmp(expect, "ignore") != 0) {
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fprintf(stderr, "(actual) \"%s\" != (expected) \"%s\" (%s:%d)\n",
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output.get() ? output.get() : "null", expect, file, line);
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}
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return ret;
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}
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bool str_match(const char* a, const char* b) { return !strcmp(a, b); }
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bool approx_match(const char* a, const char* b) {
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return tfformat::matches(const_cast<char*>(a), b);
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}
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#define print_one(...) check_print(__FILE__, __LINE__, str_match, __VA_ARGS__)
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static const char* zero() { return nullptr; }
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static void TestPrintfFormats() {
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MOZ_RELEASE_ASSERT(print_one("0", "%d", 0));
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MOZ_RELEASE_ASSERT(print_one("23", "%d", 23));
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MOZ_RELEASE_ASSERT(print_one("+23", "%+d", 23));
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MOZ_RELEASE_ASSERT(print_one("-23", "%+d", -23));
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MOZ_RELEASE_ASSERT(print_one("0023", "%04d", 23));
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MOZ_RELEASE_ASSERT(print_one("777777", "%04d", 777777));
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MOZ_RELEASE_ASSERT(print_one(" 23", "% 4d", 23));
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MOZ_RELEASE_ASSERT(print_one("23 ", "%-4d", 23));
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MOZ_RELEASE_ASSERT(print_one(" 23", "%*d", 4, 23));
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MOZ_RELEASE_ASSERT(print_one("-23 ", "%*d", -7, -23));
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MOZ_RELEASE_ASSERT(print_one(" 077", "%5.3d", 77));
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MOZ_RELEASE_ASSERT(print_one(" 077", "%5.*d", 3, 77));
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MOZ_RELEASE_ASSERT(print_one(" 077", "%*.*d", 5, 3, 77));
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MOZ_RELEASE_ASSERT(print_one("077 ", "%*.*d", -5, 3, 77));
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MOZ_RELEASE_ASSERT(print_one("77 ", "%*.*d", -5, -3, 77));
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MOZ_RELEASE_ASSERT(print_one("-1", "%d", -1));
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MOZ_RELEASE_ASSERT(print_one("23", "%u", 23u));
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MOZ_RELEASE_ASSERT(print_one("0x17", "0x%x", 23u));
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MOZ_RELEASE_ASSERT(print_one("0xFF", "0x%X", 255u));
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MOZ_RELEASE_ASSERT(print_one("027", "0%o", 23u));
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MOZ_RELEASE_ASSERT(print_one("-1", "%hd", (short)-1));
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// A funny special case.
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MOZ_RELEASE_ASSERT(print_one("", "%.*d", 0, 0));
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// This could be expanded if need be, it's just convenient to do
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// it this way.
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if (sizeof(short) == 2) {
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MOZ_RELEASE_ASSERT(print_one("8000", "%hx", (unsigned short)0x8000));
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}
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MOZ_RELEASE_ASSERT(print_one("2305", "%ld", 2305l));
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MOZ_RELEASE_ASSERT(print_one("-2305", "%ld", -2305l));
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MOZ_RELEASE_ASSERT(print_one("0xf0f0", "0x%lx", 0xf0f0ul));
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MOZ_RELEASE_ASSERT(print_one("0", "%lld", 0ll));
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MOZ_RELEASE_ASSERT(print_one("2305", "%lld", 2305ll));
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MOZ_RELEASE_ASSERT(print_one("-2305", "%lld", -2305ll));
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// A funny special case.
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MOZ_RELEASE_ASSERT(print_one("", "%.*lld", 0, 0ll));
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MOZ_RELEASE_ASSERT(print_one("0xF0F0", "0x%llX", 0xf0f0ull));
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MOZ_RELEASE_ASSERT(print_one("27270", "%zu", (size_t)27270));
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MOZ_RELEASE_ASSERT(print_one("27270", "%tu", (ptrdiff_t)27270));
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MOZ_RELEASE_ASSERT(print_one("27270", "%ju", (intmax_t)27270));
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MOZ_RELEASE_ASSERT(print_one("hello", "he%so", "ll"));
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MOZ_RELEASE_ASSERT(print_one("hello ", "%-8s", "hello"));
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MOZ_RELEASE_ASSERT(print_one(" hello", "%8s", "hello"));
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MOZ_RELEASE_ASSERT(print_one("hello ", "%*s", -8, "hello"));
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MOZ_RELEASE_ASSERT(print_one("hello", "%.*s", 5, "hello there"));
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MOZ_RELEASE_ASSERT(print_one("", "%.*s", 0, "hello there"));
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MOZ_RELEASE_ASSERT(print_one("%%", "%%%%"));
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MOZ_RELEASE_ASSERT(print_one("0", "%p", (char*)0));
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MOZ_RELEASE_ASSERT(print_one("h", "%c", 'h'));
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MOZ_RELEASE_ASSERT(print_one("1.500000", "%f", 1.5f));
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MOZ_RELEASE_ASSERT(print_one("1.5", "%g", 1.5));
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MOZ_RELEASE_ASSERT(print_one("1.50000", "%.5f", 1.5));
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MOZ_RELEASE_ASSERT(print_one("z ", "%-7s", "z"));
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MOZ_RELEASE_ASSERT(print_one("z ", "%*s", -7, "z"));
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MOZ_RELEASE_ASSERT(print_one("hello", "%*s", -3, "hello"));
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MOZ_RELEASE_ASSERT(print_one(" q", "%3c", 'q'));
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MOZ_RELEASE_ASSERT(print_one("q ", "%-3c", 'q'));
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MOZ_RELEASE_ASSERT(print_one(" q", "%*c", 3, 'q'));
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MOZ_RELEASE_ASSERT(print_one("q ", "%*c", -3, 'q'));
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// Regression test for bug#1350097. The bug was an assertion
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// failure caused by printing a very long floating point value.
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print_one("ignore", "%lf", DBL_MAX);
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// Regression test for bug#1517433. The bug was an assertion
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// failure caused by printing a floating point value with a large
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// precision and/or width.
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print_one("ignore", "%500.500lf", DBL_MAX);
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MOZ_RELEASE_ASSERT(print_one("2727", "%" PRIu32, (uint32_t)2727));
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MOZ_RELEASE_ASSERT(print_one("aa7", "%" PRIx32, (uint32_t)2727));
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MOZ_RELEASE_ASSERT(print_one("2727", "%" PRIu64, (uint64_t)2727));
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MOZ_RELEASE_ASSERT(print_one("aa7", "%" PRIx64, (uint64_t)2727));
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int n1, n2;
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MOZ_RELEASE_ASSERT(print_one(" hi ", "%n hi %n", &n1, &n2));
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MOZ_RELEASE_ASSERT(n1 == 0);
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MOZ_RELEASE_ASSERT(n2 == 4);
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MOZ_RELEASE_ASSERT(print_one("23 % 24", "%2$ld %% %1$d", 24, 23l));
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MOZ_RELEASE_ASSERT(
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print_one("7 8 9 10", "%4$lld %3$ld %2$d %1$hd", (short)10, 9, 8l, 7ll));
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MOZ_RELEASE_ASSERT(print_one("0 ", "%2$p %1$n", &n1, zero()));
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MOZ_RELEASE_ASSERT(n1 == 2);
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MOZ_RELEASE_ASSERT(print_one("23 % 024", "%2$-3ld%%%1$4.3d", 24, 23l));
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MOZ_RELEASE_ASSERT(print_one("23 1.5", "%2$d %1$g", 1.5, 23));
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MOZ_RELEASE_ASSERT(
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print_one("ff number FF", "%3$llx %1$s %2$lX", "number", 255ul, 255ull));
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MOZ_RELEASE_ASSERT(
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print_one("7799 9977", "%2$zu %1$zu", (size_t)9977, (size_t)7799));
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}
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template <typename T, size_t N>
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static void TestGlibcPrintf(T (&test_cases)[N], const char* file,
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bool (*cmp)(const char* a, const char* b)) {
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bool ok = true;
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char fmt2[40];
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for (auto& line : test_cases) {
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// mozilla::PrintfTarget doesn't support the `#` flag character or the
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// `a` conversion specifier.
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if (!line.line || strchr(line.format_string, '#') ||
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strchr(line.format_string, 'a')) {
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continue;
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}
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// Derive the format string in the test case to add "2$" in the specifier
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// (transforming e.g. "%f" into "%2$f"), and append "%1$.0d".
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// The former will make the format string take the `line.value` as the
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// second argument, and the latter will make the first argument formatted
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// with no precision. We'll pass 0 as the first argument, such that the
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// formatted value for it is "", which means the expected result string
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// is still the same.
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MOZ_RELEASE_ASSERT(sizeof(fmt2) > strlen(line.format_string) + 8);
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const char* percent = strchr(line.format_string, '%');
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MOZ_RELEASE_ASSERT(percent);
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size_t percent_off = percent - line.format_string;
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memcpy(fmt2, line.format_string, percent_off + 1);
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memcpy(fmt2 + percent_off + 1, "2$", 2);
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strcpy(fmt2 + percent_off + 3, percent + 1);
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strcat(fmt2, "%1$.0d");
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int l = line.line;
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const char* res = line.result;
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const char* fmt = line.format_string;
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if (strchr(line.format_string, 'I')) {
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ok = check_print(file, l, cmp, res, fmt, (size_t)line.value) && ok;
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ok = check_print(file, l, cmp, res, fmt2, 0, (size_t)line.value) && ok;
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} else {
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ok = check_print(file, l, cmp, res, fmt, line.value) && ok;
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ok = check_print(file, l, cmp, res, fmt2, 0, line.value) && ok;
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}
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}
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MOZ_RELEASE_ASSERT(ok);
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}
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#if defined(XP_WIN)
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int wmain()
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#else
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int main()
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#endif // defined(XP_WIN)
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{
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TestPrintfFormats();
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TestPrintfTargetPrint();
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TestGlibcPrintf(tiformat::sprint_ints, "tiformat.c", str_match);
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TestGlibcPrintf(tllformat::sprint_ints, "tllformat.c", str_match);
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TestGlibcPrintf(tfformat::sprint_doubles, "tfformat.c", approx_match);
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// %f is actually a not very useful formatting specifier, and if you give
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// large numbers, it will print... large amounts of characters. Ensure
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// that it does (which requires a patch to double-conversion).
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mozilla::SmprintfPointer dbl_max = mozilla::Smprintf("%f", -DBL_MAX);
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MOZ_RELEASE_ASSERT(dbl_max);
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// Its length should be 309 digits before the dot, 6 after, plus the dot
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// and the negative sign.
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MOZ_RELEASE_ASSERT(strlen(dbl_max.get()) == 317);
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return 0;
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}
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