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//===- unittests/Basic/DiagnosticTest.cpp -- Diagnostic engine tests ------===//
//
// 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 "clang/Basic/Diagnostic.h"
#include "clang/Basic/DiagnosticError.h"
#include "clang/Basic/DiagnosticIDs.h"
#include "clang/Basic/DiagnosticLex.h"
#include "gtest/gtest.h"
#include <optional>
using namespace llvm;
using namespace clang;
void clang::DiagnosticsTestHelper(DiagnosticsEngine &diag) {
unsigned delayedDiagID = 0U;
EXPECT_EQ(diag.DelayedDiagID, delayedDiagID);
EXPECT_FALSE(diag.DiagStates.empty());
EXPECT_TRUE(diag.DiagStatesByLoc.empty());
EXPECT_TRUE(diag.DiagStateOnPushStack.empty());
}
namespace {
// Check that DiagnosticErrorTrap works with SuppressAllDiagnostics.
TEST(DiagnosticTest, suppressAndTrap) {
DiagnosticsEngine Diags(new DiagnosticIDs(),
new DiagnosticOptions,
new IgnoringDiagConsumer());
Diags.setSuppressAllDiagnostics(true);
{
DiagnosticErrorTrap trap(Diags);
// Diag that would set UncompilableErrorOccurred and ErrorOccurred.
Diags.Report(diag::err_target_unknown_triple) << "unknown";
// Diag that would set UnrecoverableErrorOccurred and ErrorOccurred.
Diags.Report(diag::err_cannot_open_file) << "file" << "error";
// Diag that would set FatalErrorOccurred
// (via non-note following a fatal error).
Diags.Report(diag::warn_mt_message) << "warning";
EXPECT_TRUE(trap.hasErrorOccurred());
EXPECT_TRUE(trap.hasUnrecoverableErrorOccurred());
}
EXPECT_FALSE(Diags.hasErrorOccurred());
EXPECT_FALSE(Diags.hasFatalErrorOccurred());
EXPECT_FALSE(Diags.hasUncompilableErrorOccurred());
EXPECT_FALSE(Diags.hasUnrecoverableErrorOccurred());
}
// Check that FatalsAsError works as intended
TEST(DiagnosticTest, fatalsAsError) {
for (unsigned FatalsAsError = 0; FatalsAsError != 2; ++FatalsAsError) {
DiagnosticsEngine Diags(new DiagnosticIDs(),
new DiagnosticOptions,
new IgnoringDiagConsumer());
Diags.setFatalsAsError(FatalsAsError);
// Diag that would set UnrecoverableErrorOccurred and ErrorOccurred.
Diags.Report(diag::err_cannot_open_file) << "file" << "error";
// Diag that would set FatalErrorOccurred
// (via non-note following a fatal error).
Diags.Report(diag::warn_mt_message) << "warning";
EXPECT_TRUE(Diags.hasErrorOccurred());
EXPECT_EQ(Diags.hasFatalErrorOccurred(), FatalsAsError ? 0u : 1u);
EXPECT_TRUE(Diags.hasUncompilableErrorOccurred());
EXPECT_TRUE(Diags.hasUnrecoverableErrorOccurred());
// The warning should be emitted and counted only if we're not suppressing
// after fatal errors.
EXPECT_EQ(Diags.getNumWarnings(), FatalsAsError);
}
}
// Check that soft RESET works as intended
TEST(DiagnosticTest, softReset) {
DiagnosticsEngine Diags(new DiagnosticIDs(), new DiagnosticOptions,
new IgnoringDiagConsumer());
unsigned numWarnings = 0U, numErrors = 0U;
Diags.Reset(true);
// Check For ErrorOccurred and TrapNumErrorsOccurred
EXPECT_FALSE(Diags.hasErrorOccurred());
EXPECT_FALSE(Diags.hasFatalErrorOccurred());
EXPECT_FALSE(Diags.hasUncompilableErrorOccurred());
// Check for UnrecoverableErrorOccurred and TrapNumUnrecoverableErrorsOccurred
EXPECT_FALSE(Diags.hasUnrecoverableErrorOccurred());
EXPECT_EQ(Diags.getNumWarnings(), numWarnings);
EXPECT_EQ(Diags.getNumErrors(), numErrors);
// Check for private variables of DiagnosticsEngine differentiating soft reset
DiagnosticsTestHelper(Diags);
EXPECT_FALSE(Diags.isDiagnosticInFlight());
EXPECT_TRUE(Diags.isLastDiagnosticIgnored());
}
TEST(DiagnosticTest, diagnosticError) {
DiagnosticsEngine Diags(new DiagnosticIDs(), new DiagnosticOptions,
new IgnoringDiagConsumer());
PartialDiagnostic::DiagStorageAllocator Alloc;
llvm::Expected<std::pair<int, int>> Value = DiagnosticError::create(
SourceLocation(), PartialDiagnostic(diag::err_cannot_open_file, Alloc)
<< "file"
<< "error");
ASSERT_TRUE(!Value);
llvm::Error Err = Value.takeError();
std::optional<PartialDiagnosticAt> ErrDiag = DiagnosticError::take(Err);
llvm::cantFail(std::move(Err));
ASSERT_FALSE(!ErrDiag);
EXPECT_EQ(ErrDiag->first, SourceLocation());
EXPECT_EQ(ErrDiag->second.getDiagID(), diag::err_cannot_open_file);
Value = std::make_pair(20, 1);
ASSERT_FALSE(!Value);
EXPECT_EQ(*Value, std::make_pair(20, 1));
EXPECT_EQ(Value->first, 20);
}
TEST(DiagnosticTest, storedDiagEmptyWarning) {
DiagnosticsEngine Diags(new DiagnosticIDs(), new DiagnosticOptions);
class CaptureDiagnosticConsumer : public DiagnosticConsumer {
public:
SmallVector<StoredDiagnostic> StoredDiags;
void HandleDiagnostic(DiagnosticsEngine::Level level,
const Diagnostic &Info) override {
StoredDiags.push_back(StoredDiagnostic(level, Info));
}
};
CaptureDiagnosticConsumer CaptureConsumer;
Diags.setClient(&CaptureConsumer, /*ShouldOwnClient=*/false);
Diags.Report(diag::pp_hash_warning) << "";
ASSERT_TRUE(CaptureConsumer.StoredDiags.size() == 1);
// Make sure an empty warning can round-trip with \c StoredDiagnostic.
Diags.Report(CaptureConsumer.StoredDiags.front());
}
}
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