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llvm-project/clang-tools-extra/unittests/clang-query/QueryParserTest.cpp
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo 
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

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//===---- QueryParserTest.cpp - clang-query test --------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "QueryParser.h"
#include "Query.h"
#include "QuerySession.h"
#include "llvm/LineEditor/LineEditor.h"
#include "gtest/gtest.h"
using namespace clang;
using namespace clang::query;
class QueryParserTest : public ::testing::Test {
protected:
QueryParserTest() : QS(llvm::ArrayRef<std::unique_ptr<ASTUnit>>()) {}
QueryRef parse(StringRef Code) { return QueryParser::parse(Code, QS); }
QuerySession QS;
};
TEST_F(QueryParserTest, NoOp) {
QueryRef Q = parse("");
EXPECT_TRUE(isa<NoOpQuery>(Q));
Q = parse("\n");
EXPECT_TRUE(isa<NoOpQuery>(Q));
}
TEST_F(QueryParserTest, Invalid) {
QueryRef Q = parse("foo");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("unknown command: foo", cast<InvalidQuery>(Q)->ErrStr);
}
TEST_F(QueryParserTest, Help) {
QueryRef Q = parse("help");
ASSERT_TRUE(isa<HelpQuery>(Q));
Q = parse("help me");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("unexpected extra input: ' me'", cast<InvalidQuery>(Q)->ErrStr);
}
TEST_F(QueryParserTest, Quit) {
QueryRef Q = parse("quit");
ASSERT_TRUE(isa<QuitQuery>(Q));
Q = parse("q");
ASSERT_TRUE(isa<QuitQuery>(Q));
Q = parse("quit me");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("unexpected extra input: ' me'", cast<InvalidQuery>(Q)->ErrStr);
}
TEST_F(QueryParserTest, Set) {
QueryRef Q = parse("set");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("expected variable name", cast<InvalidQuery>(Q)->ErrStr);
Q = parse("set foo bar");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("unknown variable: 'foo'", cast<InvalidQuery>(Q)->ErrStr);
Q = parse("set output");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("expected 'diag', 'print', 'detailed-ast' or 'dump', got ''",
cast<InvalidQuery>(Q)->ErrStr);
Q = parse("set bind-root true foo");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("unexpected extra input: ' foo'", cast<InvalidQuery>(Q)->ErrStr);
Q = parse("set output foo");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("expected 'diag', 'print', 'detailed-ast' or 'dump', got 'foo'",
cast<InvalidQuery>(Q)->ErrStr);
Q = parse("set output dump");
ASSERT_TRUE(isa<SetExclusiveOutputQuery >(Q));
EXPECT_EQ(&QuerySession::DetailedASTOutput, cast<SetExclusiveOutputQuery>(Q)->Var);
Q = parse("set output detailed-ast");
ASSERT_TRUE(isa<SetExclusiveOutputQuery>(Q));
EXPECT_EQ(&QuerySession::DetailedASTOutput, cast<SetExclusiveOutputQuery>(Q)->Var);
Q = parse("enable output detailed-ast");
ASSERT_TRUE(isa<EnableOutputQuery>(Q));
EXPECT_EQ(&QuerySession::DetailedASTOutput, cast<EnableOutputQuery>(Q)->Var);
Q = parse("enable");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("expected variable name", cast<InvalidQuery>(Q)->ErrStr);
Q = parse("disable output detailed-ast");
ASSERT_TRUE(isa<DisableOutputQuery>(Q));
EXPECT_EQ(&QuerySession::DetailedASTOutput, cast<DisableOutputQuery>(Q)->Var);
Q = parse("set bind-root foo");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("expected 'true' or 'false', got 'foo'",
cast<InvalidQuery>(Q)->ErrStr);
Q = parse("set bind-root true");
ASSERT_TRUE(isa<SetQuery<bool> >(Q));
EXPECT_EQ(&QuerySession::BindRoot, cast<SetQuery<bool> >(Q)->Var);
EXPECT_EQ(true, cast<SetQuery<bool> >(Q)->Value);
}
TEST_F(QueryParserTest, Match) {
QueryRef Q = parse("match decl()");
ASSERT_TRUE(isa<MatchQuery>(Q));
EXPECT_TRUE(cast<MatchQuery>(Q)->Matcher.canConvertTo<Decl>());
Q = parse("m stmt()");
ASSERT_TRUE(isa<MatchQuery>(Q));
EXPECT_TRUE(cast<MatchQuery>(Q)->Matcher.canConvertTo<Stmt>());
}
TEST_F(QueryParserTest, LetUnlet) {
QueryRef Q = parse("let foo decl()");
ASSERT_TRUE(isa<LetQuery>(Q));
EXPECT_EQ("foo", cast<LetQuery>(Q)->Name);
EXPECT_TRUE(cast<LetQuery>(Q)->Value.isMatcher());
EXPECT_TRUE(cast<LetQuery>(Q)->Value.getMatcher().hasTypedMatcher<Decl>());
Q = parse("l foo decl()");
ASSERT_TRUE(isa<LetQuery>(Q));
EXPECT_EQ("foo", cast<LetQuery>(Q)->Name);
EXPECT_TRUE(cast<LetQuery>(Q)->Value.isMatcher());
EXPECT_TRUE(cast<LetQuery>(Q)->Value.getMatcher().hasTypedMatcher<Decl>());
Q = parse("let bar \"str\"");
ASSERT_TRUE(isa<LetQuery>(Q));
EXPECT_EQ("bar", cast<LetQuery>(Q)->Name);
EXPECT_TRUE(cast<LetQuery>(Q)->Value.isString());
EXPECT_EQ("str", cast<LetQuery>(Q)->Value.getString());
Q = parse("let");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("expected variable name", cast<InvalidQuery>(Q)->ErrStr);
Q = parse("unlet x");
ASSERT_TRUE(isa<LetQuery>(Q));
EXPECT_EQ("x", cast<LetQuery>(Q)->Name);
EXPECT_FALSE(cast<LetQuery>(Q)->Value.hasValue());
Q = parse("unlet");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("expected variable name", cast<InvalidQuery>(Q)->ErrStr);
Q = parse("unlet x bad_data");
ASSERT_TRUE(isa<InvalidQuery>(Q));
EXPECT_EQ("unexpected extra input: ' bad_data'",
cast<InvalidQuery>(Q)->ErrStr);
}
TEST_F(QueryParserTest, Comment) {
QueryRef Q = parse("# let foo decl()");
ASSERT_TRUE(isa<NoOpQuery>(Q));
Q = parse("let foo decl() # creates a decl() matcher called foo");
ASSERT_TRUE(isa<LetQuery>(Q));
Q = parse("set bind-root false # reduce noise");
ASSERT_TRUE(isa<SetQuery<bool>>(Q));
}
TEST_F(QueryParserTest, Complete) {
std::vector<llvm::LineEditor::Completion> Comps =
QueryParser::complete("", 0, QS);
ASSERT_EQ(8u, Comps.size());
EXPECT_EQ("help ", Comps[0].TypedText);
EXPECT_EQ("help", Comps[0].DisplayText);
EXPECT_EQ("let ", Comps[1].TypedText);
EXPECT_EQ("let", Comps[1].DisplayText);
EXPECT_EQ("match ", Comps[2].TypedText);
EXPECT_EQ("match", Comps[2].DisplayText);
EXPECT_EQ("quit ", Comps[3].TypedText);
EXPECT_EQ("quit", Comps[3].DisplayText);
EXPECT_EQ("set ", Comps[4].TypedText);
EXPECT_EQ("set", Comps[4].DisplayText);
EXPECT_EQ("enable ", Comps[5].TypedText);
EXPECT_EQ("enable", Comps[5].DisplayText);
EXPECT_EQ("disable ", Comps[6].TypedText);
EXPECT_EQ("disable", Comps[6].DisplayText);
EXPECT_EQ("unlet ", Comps[7].TypedText);
EXPECT_EQ("unlet", Comps[7].DisplayText);
Comps = QueryParser::complete("set o", 5, QS);
ASSERT_EQ(1u, Comps.size());
EXPECT_EQ("utput ", Comps[0].TypedText);
EXPECT_EQ("output", Comps[0].DisplayText);
Comps = QueryParser::complete("enable ", 7, QS);
ASSERT_EQ(1u, Comps.size());
EXPECT_EQ("output ", Comps[0].TypedText);
EXPECT_EQ("output", Comps[0].DisplayText);
Comps = QueryParser::complete("enable output ", 14, QS);
ASSERT_EQ(4u, Comps.size());
EXPECT_EQ("diag ", Comps[0].TypedText);
EXPECT_EQ("diag", Comps[0].DisplayText);
EXPECT_EQ("print ", Comps[1].TypedText);
EXPECT_EQ("print", Comps[1].DisplayText);
EXPECT_EQ("detailed-ast ", Comps[2].TypedText);
EXPECT_EQ("detailed-ast", Comps[2].DisplayText);
EXPECT_EQ("dump ", Comps[3].TypedText);
EXPECT_EQ("dump", Comps[3].DisplayText);
Comps = QueryParser::complete("match while", 11, QS);
ASSERT_EQ(1u, Comps.size());
EXPECT_EQ("Stmt(", Comps[0].TypedText);
EXPECT_EQ("Matcher<Stmt> whileStmt(Matcher<WhileStmt>...)",
Comps[0].DisplayText);
Comps = QueryParser::complete("m", 1, QS);
ASSERT_EQ(1u, Comps.size());
EXPECT_EQ("atch ", Comps[0].TypedText);
EXPECT_EQ("match", Comps[0].DisplayText);
Comps = QueryParser::complete("l", 1, QS);
ASSERT_EQ(1u, Comps.size());
EXPECT_EQ("et ", Comps[0].TypedText);
EXPECT_EQ("let", Comps[0].DisplayText);
}
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