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90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "toolchain/diagnostics/diagnostic_emitter.h"
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/FormatVariadic.h"
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#include "toolchain/diagnostics/mocks.h"
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namespace Carbon::Testing {
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namespace {
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struct FakeDiagnostic : DiagnosticBase<FakeDiagnostic> {
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static constexpr llvm::StringLiteral ShortName = "fake-diagnostic";
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// TODO: consider ways to put the Message into `format` to allow dynamic
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// selection of the message.
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static constexpr llvm::StringLiteral Message = "{0}";
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auto Format() -> std::string {
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// Work around a bug in Clang's unused const variable warning by marking it
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// used here with a no-op.
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static_cast<void>(ShortName);
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return llvm::formatv(Message.data(), message).str();
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}
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std::string message;
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};
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struct FakeDiagnosticLocationTranslator : DiagnosticLocationTranslator<int> {
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auto GetLocation(int n) -> Diagnostic::Location override {
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return {.file_name = "test", .line_number = 1, .column_number = n};
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}
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};
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TEST(DiagTest, EmitErrors) {
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FakeDiagnosticLocationTranslator translator;
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Testing::MockDiagnosticConsumer consumer;
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DiagnosticEmitter<int> emitter(translator, consumer);
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EXPECT_CALL(consumer, HandleDiagnostic(
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AllOf(DiagnosticLevel(Diagnostic::Error),
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DiagnosticAt(1, 1), DiagnosticMessage("M1"),
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DiagnosticShortName("fake-diagnostic"))));
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EXPECT_CALL(consumer, HandleDiagnostic(
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AllOf(DiagnosticLevel(Diagnostic::Error),
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DiagnosticAt(1, 2), DiagnosticMessage("M2"),
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DiagnosticShortName("fake-diagnostic"))));
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emitter.EmitError<FakeDiagnostic>(1, {.message = "M1"});
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emitter.EmitError<FakeDiagnostic>(2, {.message = "M2"});
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}
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TEST(DiagTest, EmitWarnings) {
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std::vector<std::string> reported;
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FakeDiagnosticLocationTranslator translator;
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Testing::MockDiagnosticConsumer consumer;
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DiagnosticEmitter<int> emitter(translator, consumer);
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EXPECT_CALL(consumer, HandleDiagnostic(
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AllOf(DiagnosticLevel(Diagnostic::Warning),
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DiagnosticAt(1, 3), DiagnosticMessage("M1"),
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DiagnosticShortName("fake-diagnostic"))));
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EXPECT_CALL(consumer, HandleDiagnostic(
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AllOf(DiagnosticLevel(Diagnostic::Warning),
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DiagnosticAt(1, 5), DiagnosticMessage("M3"),
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DiagnosticShortName("fake-diagnostic"))));
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emitter.EmitWarningIf<FakeDiagnostic>(3, [](FakeDiagnostic& diagnostic) {
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diagnostic.message = "M1";
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return true;
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});
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emitter.EmitWarningIf<FakeDiagnostic>(4, [](FakeDiagnostic& diagnostic) {
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diagnostic.message = "M2";
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return false;
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});
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emitter.EmitWarningIf<FakeDiagnostic>(5, [](FakeDiagnostic& diagnostic) {
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diagnostic.message = "M3";
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return true;
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});
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}
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} // namespace
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} // namespace Carbon::Testing
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