Author: teemperor Date: Wed Aug 22 13:22:34 2018 New Revision: 340448 URL: http://llvm.org/viewvc/llvm-project?rev=340448&view=rev Log: Add unit test for StringLexer
Reviewers: labath, #lldb Reviewed By: labath Subscribers: jloser, mgorny, lldb-commits Differential Revision: https://reviews.llvm.org/D50298 Added: lldb/trunk/unittests/Utility/StringLexerTest.cpp Modified: lldb/trunk/unittests/Utility/CMakeLists.txt Modified: lldb/trunk/unittests/Utility/CMakeLists.txt URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/unittests/Utility/CMakeLists.txt?rev=340448&r1=340447&r2=340448&view=diff ============================================================================== --- lldb/trunk/unittests/Utility/CMakeLists.txt (original) +++ lldb/trunk/unittests/Utility/CMakeLists.txt Wed Aug 22 13:22:34 2018 @@ -19,6 +19,7 @@ add_lldb_unittest(UtilityTests StreamTeeTest.cpp StreamTest.cpp StringExtractorTest.cpp + StringLexerTest.cpp StringListTest.cpp StructuredDataTest.cpp TildeExpressionResolverTest.cpp Added: lldb/trunk/unittests/Utility/StringLexerTest.cpp URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/unittests/Utility/StringLexerTest.cpp?rev=340448&view=auto ============================================================================== --- lldb/trunk/unittests/Utility/StringLexerTest.cpp (added) +++ lldb/trunk/unittests/Utility/StringLexerTest.cpp Wed Aug 22 13:22:34 2018 @@ -0,0 +1,141 @@ +//===-- StringLexerTest.cpp -------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "lldb/Utility/StringLexer.h" +#include "gtest/gtest.h" + +using namespace lldb_utility; + +TEST(StringLexerTest, GetUnlexed) { + StringLexer l("foo"); + EXPECT_EQ("foo", l.GetUnlexed()); + l.Next(); + EXPECT_EQ("oo", l.GetUnlexed()); + l.Next(); + l.Next(); + EXPECT_EQ("", l.GetUnlexed()); +} + +TEST(StringLexerTest, HasAtLeast) { + StringLexer l("foo"); + EXPECT_FALSE(l.HasAtLeast(5)); + EXPECT_FALSE(l.HasAtLeast(4)); + EXPECT_TRUE(l.HasAtLeast(3)); + EXPECT_TRUE(l.HasAtLeast(2)); + EXPECT_TRUE(l.HasAtLeast(1)); + + l.Next(); + EXPECT_FALSE(l.HasAtLeast(5)); + EXPECT_FALSE(l.HasAtLeast(4)); + EXPECT_FALSE(l.HasAtLeast(3)); + EXPECT_TRUE(l.HasAtLeast(2)); + EXPECT_TRUE(l.HasAtLeast(1)); + + l.Next(); + l.Next(); + EXPECT_FALSE(l.HasAtLeast(5)); + EXPECT_FALSE(l.HasAtLeast(4)); + EXPECT_FALSE(l.HasAtLeast(3)); + EXPECT_FALSE(l.HasAtLeast(2)); + EXPECT_FALSE(l.HasAtLeast(1)); +} + +TEST(StringLexerTest, AdvanceIf) { + StringLexer l("foobar"); + + EXPECT_FALSE(l.AdvanceIf("oo")); + // Skip the "fo" part. + EXPECT_TRUE(l.AdvanceIf("fo")); + EXPECT_FALSE(l.AdvanceIf("obarz")); + // Skip the remaining string. + EXPECT_TRUE(l.AdvanceIf("obar")); + + EXPECT_FALSE(l.AdvanceIf("obarz")); + EXPECT_FALSE(l.AdvanceIf("foo")); + EXPECT_FALSE(l.AdvanceIf("o")); + EXPECT_FALSE(l.AdvanceIf(" ")); +} + +TEST(StringLexerTest, PutBack) { + StringLexer l("foo"); + + l.Next(); + l.PutBack(1); + EXPECT_EQ("foo", l.GetUnlexed()); + + l.Next(); + l.Next(); + l.Next(); + l.PutBack(2); + EXPECT_EQ("oo", l.GetUnlexed()); + + l.PutBack(1); + EXPECT_EQ("foo", l.GetUnlexed()); +} + +TEST(StringLexerTest, Peek) { + StringLexer l("foo"); + + EXPECT_EQ('f', l.Peek()); + l.Next(); + EXPECT_EQ('o', l.Peek()); + l.Next(); + EXPECT_EQ('o', l.Peek()); +} + +TEST(StringLexerTest, Next) { + StringLexer l("foo"); + EXPECT_EQ('f', l.Next()); + EXPECT_EQ('o', l.Next()); + EXPECT_EQ('o', l.Next()); +} + +TEST(StringLexerTest, NextIf) { + StringLexer l("foo"); + + EXPECT_FALSE(l.NextIf('\0')); + EXPECT_FALSE(l.NextIf(' ')); + EXPECT_FALSE(l.NextIf('o')); + + EXPECT_TRUE(l.NextIf('f')); + + EXPECT_FALSE(l.NextIf('\0')); + EXPECT_FALSE(l.NextIf(' ')); + EXPECT_FALSE(l.NextIf('f')); + + EXPECT_TRUE(l.NextIf('o')); + + EXPECT_FALSE(l.NextIf('\0')); + EXPECT_FALSE(l.NextIf(' ')); + EXPECT_FALSE(l.NextIf('f')); + + EXPECT_TRUE(l.NextIf('o')); +} + +TEST(StringLexerTest, NextIfList) { + StringLexer l("foo"); + + EXPECT_FALSE(l.NextIf({'\0', ' ', 'o'}).first); + + auto r = l.NextIf({'f'}); + EXPECT_TRUE(r.first); + EXPECT_EQ('f', r.second); + + EXPECT_FALSE(l.NextIf({'\0', ' ', 'f'}).first); + + r = l.NextIf({'f', 'o'}); + EXPECT_TRUE(r.first); + EXPECT_EQ('o', r.second); + + EXPECT_FALSE(l.NextIf({'\0', ' ', 'f'}).first); + + r = l.NextIf({'*', 'f', 'o', 'o'}); + EXPECT_TRUE(r.first); + EXPECT_EQ('o', r.second); +} _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
