clang-tools-extra/clangd/unittests/tweaks/SwapIfBranchesTests.cpp

   1 //===-- SwapIfBranchesTests.cpp ---------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "TweakTesting.h"
  10 #include "gmock/gmock-matchers.h"
  11 #include "gmock/gmock.h"
  12 #include "gtest/gtest.h"
  13
  14 namespace clang {
  15 namespace clangd {
  16 namespace {
  17
  18 TWEAK_TEST(SwapIfBranches);
  19
  20 TEST_F(SwapIfBranchesTest, Test) {
  21   Context = Function;
  22   EXPECT_EQ(apply("^if (true) {return;} else {(void)0;}"),
  23             "if (true) {(void)0;} else {return;}");
  24   EXPECT_EQ(apply("^if (/*error-ok*/) {return;} else {(void)0;}"),
  25             "if (/*error-ok*/) {(void)0;} else {return;}")
  26       << "broken condition";
  27   EXPECT_AVAILABLE("^i^f^^(^t^r^u^e^) { return; } ^e^l^s^e^ { return; }");
  28   EXPECT_UNAVAILABLE("if (true) {^return ^;^ } else { ^return^;^ }");
  29   // Available in subexpressions of the condition;
  30   EXPECT_AVAILABLE("if(2 + [[2]] + 2) { return; } else {return;}");
  31   // But not as part of the branches.
  32   EXPECT_UNAVAILABLE("if(2 + 2 + 2) { [[return]]; } else { return; }");
  33   // Range covers the "else" token, so available.
  34   EXPECT_AVAILABLE("if(2 + 2 + 2) { return[[; } else {return;]]}");
  35   // Not available in compound statements in condition.
  36   EXPECT_UNAVAILABLE("if([]{return [[true]];}()) { return; } else { return; }");
  37   // Not available if both sides aren't braced.
  38   EXPECT_UNAVAILABLE("^if (1) return; else { return; }");
  39   // Only one if statement is supported!
  40   EXPECT_UNAVAILABLE("[[if(1){}else{}if(2){}else{}]]");
  41 }
  42
  43 } // namespace
  44 } // namespace clangd
  45 } // namespace clang