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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "gtest/gtest.h"
#include "nsMsgI18N.h"
// Unit tests for nsMsgI18N functions.
// Invocation:
// $ ./mach gtest "TestMsgI18N.*"
// Test nsMsgI18NTruncateUTF8Str().
TEST(TestMsgI18N, TruncateUTF8Str)
{
struct {
nsLiteralCString input;
size_t maxBytes;
nsLiteralCString expected;
} testStrings[] = {
// ASCII
{""_ns, 100, ""_ns},
{""_ns, 0, ""_ns},
{"FooBar"_ns, 100, "FooBar"_ns},
{"FooBar"_ns, 3, "Foo"_ns},
{"FooBar"_ns, 0, ""_ns},
// Non-ASCII - Make sure only complete characters are returned.
{"グレープフルーツ"_ns, 100, "グレープフルーツ"_ns},
{"グレープフルーツ"_ns, 0, ""_ns},
{"グレープフルーツ"_ns, 12,
"グレープ"_ns}, // Clip to exact UTF-8 boundary.
{"グレープフルーツ"_ns, 13, "グレープ"_ns}, // Discards partial char...
{"グレープフルーツ"_ns, 14, "グレープ"_ns}, // Discards partial char...
{"グレープフルーツ"_ns, 15, "グレープフ"_ns}, // ...Enough room!
// Stop at invalid UTF-8.
{"foo"
"\xff"
"bar"_ns,
100, "foo"_ns},
{"foo"
"\xff"
"bar"_ns,
3, "foo"_ns},
{"foo"
"\xff"
"bar"_ns,
4, "foo"_ns},
{"foo"
"\xff"
"bar"_ns,
1, "f"_ns},
{"foo"
"\xff"
"bar"_ns,
0, ""_ns},
};
for (auto const& t : testStrings) {
nsCString got = nsMsgI18NTruncateUTF8Str(t.input, t.maxBytes);
ASSERT_EQ(got, t.expected);
}
}