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//===-- CodeCompletionStringsTests.cpp --------------------------*- C++ -*-===//
//
// 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 "CodeCompletionStrings.h"
#include "TestTU.h"
#include "clang/Sema/CodeCompleteConsumer.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace clang {
namespace clangd {
namespace {
class CompletionStringTest : public ::testing::Test {
public:
CompletionStringTest()
: Allocator(std::make_shared<clang::GlobalCodeCompletionAllocator>()),
CCTUInfo(Allocator), Builder(*Allocator, CCTUInfo) {}
protected:
void computeSignature(const CodeCompletionString &CCS,
bool CompletingPattern = false) {
Signature.clear();
Snippet.clear();
getSignature(CCS, &Signature, &Snippet, /*RequiredQualifier=*/nullptr,
CompletingPattern);
}
std::shared_ptr<clang::GlobalCodeCompletionAllocator> Allocator;
CodeCompletionTUInfo CCTUInfo;
CodeCompletionBuilder Builder;
std::string Signature;
std::string Snippet;
};
TEST_F(CompletionStringTest, ReturnType) {
Builder.AddResultTypeChunk("result");
Builder.AddResultTypeChunk("redundant result no no");
EXPECT_EQ(getReturnType(*Builder.TakeString()), "result");
}
TEST_F(CompletionStringTest, Documentation) {
Builder.addBriefComment("This is ignored");
EXPECT_EQ(formatDocumentation(*Builder.TakeString(), "Is this brief?"),
"Is this brief?");
}
TEST_F(CompletionStringTest, DocumentationWithAnnotation) {
Builder.addBriefComment("This is ignored");
Builder.AddAnnotation("Ano");
EXPECT_EQ(formatDocumentation(*Builder.TakeString(), "Is this brief?"),
"Annotation: Ano\n\nIs this brief?");
}
TEST_F(CompletionStringTest, GetDeclCommentBadUTF8) {
// <ff> is not a valid byte here, should be replaced by encoded <U+FFFD>.
auto TU = TestTU::withCode("/*x\xffy*/ struct X;");
auto AST = TU.build();
EXPECT_EQ("x\xef\xbf\xbdy",
getDeclComment(AST.getASTContext(), findDecl(AST, "X")));
}
TEST_F(CompletionStringTest, MultipleAnnotations) {
Builder.AddAnnotation("Ano1");
Builder.AddAnnotation("Ano2");
Builder.AddAnnotation("Ano3");
EXPECT_EQ(formatDocumentation(*Builder.TakeString(), ""),
"Annotations: Ano1 Ano2 Ano3\n");
}
TEST_F(CompletionStringTest, EmptySignature) {
Builder.AddTypedTextChunk("X");
Builder.AddResultTypeChunk("result no no");
computeSignature(*Builder.TakeString());
EXPECT_EQ(Signature, "");
EXPECT_EQ(Snippet, "");
}
TEST_F(CompletionStringTest, Function) {
Builder.AddResultTypeChunk("result no no");
Builder.addBriefComment("This comment is ignored");
Builder.AddTypedTextChunk("Foo");
Builder.AddChunk(CodeCompletionString::CK_LeftParen);
Builder.AddPlaceholderChunk("p1");
Builder.AddChunk(CodeCompletionString::CK_Comma);
Builder.AddPlaceholderChunk("p2");
Builder.AddChunk(CodeCompletionString::CK_RightParen);
auto *CCS = Builder.TakeString();
computeSignature(*CCS);
EXPECT_EQ(Signature, "(p1, p2)");
EXPECT_EQ(Snippet, "(${1:p1}, ${2:p2})");
EXPECT_EQ(formatDocumentation(*CCS, "Foo's comment"), "Foo's comment");
}
TEST_F(CompletionStringTest, FunctionWithDefaultParams) {
// return_type foo(p1, p2 = 0, p3 = 0)
Builder.AddChunk(CodeCompletionString::CK_Comma);
Builder.AddTypedTextChunk("p3 = 0");
auto *DefaultParam2 = Builder.TakeString();
Builder.AddChunk(CodeCompletionString::CK_Comma);
Builder.AddTypedTextChunk("p2 = 0");
Builder.AddOptionalChunk(DefaultParam2);
auto *DefaultParam1 = Builder.TakeString();
Builder.AddResultTypeChunk("return_type");
Builder.AddTypedTextChunk("Foo");
Builder.AddChunk(CodeCompletionString::CK_LeftParen);
Builder.AddPlaceholderChunk("p1");
Builder.AddOptionalChunk(DefaultParam1);
Builder.AddChunk(CodeCompletionString::CK_RightParen);
auto *CCS = Builder.TakeString();
computeSignature(*CCS);
EXPECT_EQ(Signature, "(p1, p2 = 0, p3 = 0)");
EXPECT_EQ(Snippet, "(${1:p1})");
}
TEST_F(CompletionStringTest, EscapeSnippet) {
Builder.AddTypedTextChunk("Foo");
Builder.AddChunk(CodeCompletionString::CK_LeftParen);
Builder.AddPlaceholderChunk("$p}1\\");
Builder.AddChunk(CodeCompletionString::CK_RightParen);
computeSignature(*Builder.TakeString());
EXPECT_EQ(Signature, "($p}1\\)");
EXPECT_EQ(Snippet, "(${1:\\$p\\}1\\\\})");
}
TEST_F(CompletionStringTest, SnippetsInPatterns) {
auto MakeCCS = [this]() -> const CodeCompletionString & {
CodeCompletionBuilder Builder(*Allocator, CCTUInfo);
Builder.AddTypedTextChunk("namespace");
Builder.AddChunk(CodeCompletionString::CK_HorizontalSpace);
Builder.AddPlaceholderChunk("name");
Builder.AddChunk(CodeCompletionString::CK_Equal);
Builder.AddPlaceholderChunk("target");
Builder.AddChunk(CodeCompletionString::CK_SemiColon);
return *Builder.TakeString();
};
computeSignature(MakeCCS(), /*CompletingPattern=*/false);
EXPECT_EQ(Snippet, " ${1:name} = ${2:target};");
// When completing a pattern, the last placeholder holds the cursor position.
computeSignature(MakeCCS(), /*CompletingPattern=*/true);
EXPECT_EQ(Snippet, " ${1:name} = ${0:target};");
}
TEST_F(CompletionStringTest, IgnoreInformativeQualifier) {
Builder.AddTypedTextChunk("X");
Builder.AddInformativeChunk("info ok");
Builder.AddInformativeChunk("info no no::");
computeSignature(*Builder.TakeString());
EXPECT_EQ(Signature, "info ok");
EXPECT_EQ(Snippet, "");
}
TEST_F(CompletionStringTest, ObjectiveCMethodNoArguments) {
Builder.AddResultTypeChunk("void");
Builder.AddTypedTextChunk("methodName");
auto *CCS = Builder.TakeString();
computeSignature(*CCS);
EXPECT_EQ(Signature, "");
EXPECT_EQ(Snippet, "");
}
TEST_F(CompletionStringTest, ObjectiveCMethodOneArgument) {
Builder.AddResultTypeChunk("void");
Builder.AddTypedTextChunk("methodWithArg:");
Builder.AddPlaceholderChunk("(type)");
auto *CCS = Builder.TakeString();
computeSignature(*CCS);
EXPECT_EQ(Signature, "(type)");
EXPECT_EQ(Snippet, "${1:(type)}");
}
TEST_F(CompletionStringTest, ObjectiveCMethodTwoArgumentsFromBeginning) {
Builder.AddResultTypeChunk("int");
Builder.AddTypedTextChunk("withFoo:");
Builder.AddPlaceholderChunk("(type)");
Builder.AddChunk(CodeCompletionString::CK_HorizontalSpace);
Builder.AddTypedTextChunk("bar:");
Builder.AddPlaceholderChunk("(type2)");
auto *CCS = Builder.TakeString();
computeSignature(*CCS);
EXPECT_EQ(Signature, "(type) bar:(type2)");
EXPECT_EQ(Snippet, "${1:(type)} bar:${2:(type2)}");
}
TEST_F(CompletionStringTest, ObjectiveCMethodTwoArgumentsFromMiddle) {
Builder.AddResultTypeChunk("int");
Builder.AddInformativeChunk("withFoo:");
Builder.AddTypedTextChunk("bar:");
Builder.AddPlaceholderChunk("(type2)");
auto *CCS = Builder.TakeString();
computeSignature(*CCS);
EXPECT_EQ(Signature, "(type2)");
EXPECT_EQ(Snippet, "${1:(type2)}");
}
} // namespace
} // namespace clangd
} // namespace clang
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