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Jon MeowandGeoff Romer
250ce4ab00
It was in my mind to add String in order to support libraries in `package`. `print` is added in order to have a String go to stdout. I've tried to do `print` in a way that won't be too hard to add other printable types, but it's probably also somewhat optional here -- that is, if desired, I could remove it. But it was a lot easier to doublecheck `\n` behavior with it, and I suspect it'll be helpful in other tests if it supports more value types. On the side, this also fixes dereferencing in Pattern/Expression Print() calls, which I was noticing printing pointers instead of values. This may be another argument for moving away from passing pointers, since this seems to be a difficult-to-catch error. Co-authored-by: Geoff Romer <gromer@google.com>
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "common/string_helpers.h"
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#include <string>
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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using ::testing::Eq;
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using ::testing::Optional;
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namespace Carbon {
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namespace {
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TEST(UnescapeStringLiteral, Valid) {
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EXPECT_THAT(UnescapeStringLiteral("test"), Optional(Eq("test")));
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EXPECT_THAT(UnescapeStringLiteral("test\n"), Optional(Eq("test\n")));
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EXPECT_THAT(UnescapeStringLiteral("test\\n"), Optional(Eq("test\n")));
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EXPECT_THAT(UnescapeStringLiteral("abc\\ndef"), Optional(Eq("abc\ndef")));
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EXPECT_THAT(UnescapeStringLiteral("test\\\\n"), Optional(Eq("test\\n")));
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EXPECT_THAT(UnescapeStringLiteral("\\xAA"), Optional(Eq("\xAA")));
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EXPECT_THAT(UnescapeStringLiteral("\\x12"), Optional(Eq("\x12")));
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}
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TEST(UnescapeStringLiteral, Invalid) {
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// Missing char after `\`.
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EXPECT_THAT(UnescapeStringLiteral("a\\"), Eq(std::nullopt));
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// Not a supported escape.
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EXPECT_THAT(UnescapeStringLiteral("\\e"), Eq(std::nullopt));
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// Needs 2 hex chars.
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EXPECT_THAT(UnescapeStringLiteral("\\x"), Eq(std::nullopt));
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// Needs 2 hex chars.
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EXPECT_THAT(UnescapeStringLiteral("\\xA"), Eq(std::nullopt));
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// Needs uppercase hex.
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EXPECT_THAT(UnescapeStringLiteral("\\xaa"), Eq(std::nullopt));
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// Reserved.
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EXPECT_THAT(UnescapeStringLiteral("\\00"), Eq(std::nullopt));
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}
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TEST(UnescapeStringLiteral, Nul) {
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std::optional<std::string> str = UnescapeStringLiteral("a\\0b");
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ASSERT_NE(str, std::nullopt);
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EXPECT_THAT(str->size(), Eq(3));
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EXPECT_THAT(strlen(str->c_str()), Eq(1));
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EXPECT_THAT((*str)[0], Eq('a'));
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EXPECT_THAT((*str)[1], Eq('\0'));
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EXPECT_THAT((*str)[2], Eq('b'));
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}
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} // namespace
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} // namespace Carbon
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