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//===-- SourceCodeTests.cpp ------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "SourceCode.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/raw_os_ostream.h"
#include "llvm/Testing/Support/Error.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace clang{
namespace clangd {
namespace {
using llvm::Failed;
using llvm::HasValue;
MATCHER_P2(Pos, Line, Col, "") {
return arg.line == Line && arg.character == Col;
}
// The = → 🡆 below are ASCII (1 byte), BMP (3 bytes), and astral (4 bytes).
const char File[] = R"(0:0 = 0
1:0 → 8
2:0 🡆 18)";
/// A helper to make tests easier to read.
Position position(int line, int character) {
Position Pos;
Pos.line = line;
Pos.character = character;
return Pos;
}
TEST(SourceCodeTests, PositionToOffset) {
// line out of bounds
EXPECT_THAT_EXPECTED(positionToOffset(File, position(-1, 2)), Failed());
// first line
EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, -1)),
Failed()); // out of range
EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 0)),
HasValue(0)); // first character
EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 3)),
HasValue(3)); // middle character
EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 6)),
HasValue(6)); // last character
EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 7)),
HasValue(7)); // the newline itself
EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 7), false),
HasValue(7));
EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 8)),
HasValue(7)); // out of range
EXPECT_THAT_EXPECTED(positionToOffset(File, position(0, 8), false),
Failed()); // out of range
// middle line
EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, -1)),
Failed()); // out of range
EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 0)),
HasValue(8)); // first character
EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 3)),
HasValue(11)); // middle character
EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 3), false),
HasValue(11));
EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 6)),
HasValue(16)); // last character
EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 7)),
HasValue(17)); // the newline itself
EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 8)),
HasValue(17)); // out of range
EXPECT_THAT_EXPECTED(positionToOffset(File, position(1, 8), false),
Failed()); // out of range
// last line
EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, -1)),
Failed()); // out of range
EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 0)),
HasValue(18)); // first character
EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 3)),
HasValue(21)); // middle character
EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 5), false),
Failed()); // middle of surrogate pair
EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 5)),
HasValue(26)); // middle of surrogate pair
EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 6), false),
HasValue(26)); // end of surrogate pair
EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 8)),
HasValue(28)); // last character
EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 9)),
HasValue(29)); // EOF
EXPECT_THAT_EXPECTED(positionToOffset(File, position(2, 10), false),
Failed()); // out of range
// line out of bounds
EXPECT_THAT_EXPECTED(positionToOffset(File, position(3, 0)), Failed());
EXPECT_THAT_EXPECTED(positionToOffset(File, position(3, 1)), Failed());
}
TEST(SourceCodeTests, OffsetToPosition) {
EXPECT_THAT(offsetToPosition(File, 0), Pos(0, 0)) << "start of file";
EXPECT_THAT(offsetToPosition(File, 3), Pos(0, 3)) << "in first line";
EXPECT_THAT(offsetToPosition(File, 6), Pos(0, 6)) << "end of first line";
EXPECT_THAT(offsetToPosition(File, 7), Pos(0, 7)) << "first newline";
EXPECT_THAT(offsetToPosition(File, 8), Pos(1, 0)) << "start of second line";
EXPECT_THAT(offsetToPosition(File, 12), Pos(1, 4)) << "before BMP char";
EXPECT_THAT(offsetToPosition(File, 13), Pos(1, 5)) << "in BMP char";
EXPECT_THAT(offsetToPosition(File, 15), Pos(1, 5)) << "after BMP char";
EXPECT_THAT(offsetToPosition(File, 16), Pos(1, 6)) << "end of second line";
EXPECT_THAT(offsetToPosition(File, 17), Pos(1, 7)) << "second newline";
EXPECT_THAT(offsetToPosition(File, 18), Pos(2, 0)) << "start of last line";
EXPECT_THAT(offsetToPosition(File, 21), Pos(2, 3)) << "in last line";
EXPECT_THAT(offsetToPosition(File, 22), Pos(2, 4)) << "before astral char";
EXPECT_THAT(offsetToPosition(File, 24), Pos(2, 6)) << "in astral char";
EXPECT_THAT(offsetToPosition(File, 26), Pos(2, 6)) << "after astral char";
EXPECT_THAT(offsetToPosition(File, 28), Pos(2, 8)) << "end of last line";
EXPECT_THAT(offsetToPosition(File, 29), Pos(2, 9)) << "EOF";
EXPECT_THAT(offsetToPosition(File, 30), Pos(2, 9)) << "out of bounds";
}
} // namespace
} // namespace clangd
} // namespace clang
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