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-rw-r--r--Source/CTest/cmCTestMultiProcessHandler.cxx331
-rw-r--r--Source/CTest/cmCTestMultiProcessHandler.h1
-rw-r--r--Source/CTest/cmCTestRunTest.h4
-rw-r--r--Source/CTest/cmCTestTestHandler.cxx26
-rw-r--r--Source/CTest/cmCTestTestHandler.h3
-rw-r--r--Source/cmCTest.cxx26
-rw-r--r--Source/cmCTest.h6
-rw-r--r--Source/cmTestGenerator.cxx59
-rw-r--r--Source/cmTestGenerator.h3
-rw-r--r--Source/ctest.cxx5
10 files changed, 446 insertions, 18 deletions
diff --git a/Source/CTest/cmCTestMultiProcessHandler.cxx b/Source/CTest/cmCTestMultiProcessHandler.cxx
index f026001..8867323 100644
--- a/Source/CTest/cmCTestMultiProcessHandler.cxx
+++ b/Source/CTest/cmCTestMultiProcessHandler.cxx
@@ -6,9 +6,13 @@
#include "cmCTest.h"
#include "cmCTestRunTest.h"
#include "cmCTestTestHandler.h"
+#include "cmDuration.h"
+#include "cmListFileCache.h"
#include "cmSystemTools.h"
#include "cmWorkingDirectory.h"
+#include "cm_jsoncpp_value.h"
+#include "cm_jsoncpp_writer.h"
#include "cm_uv.h"
#include "cmUVSignalHackRAII.h" // IWYU pragma: keep
@@ -20,13 +24,19 @@
#include <chrono>
#include <cstring>
#include <iomanip>
+#include <iostream>
#include <list>
#include <math.h>
#include <sstream>
#include <stack>
#include <stdlib.h>
+#include <unordered_map>
#include <utility>
+namespace cmsys {
+class RegularExpression;
+}
+
class TestComparator
{
public:
@@ -725,9 +735,330 @@ void cmCTestMultiProcessHandler::MarkFinished()
cmSystemTools::RemoveFile(fname);
}
+static Json::Value DumpToJsonArray(const std::set<std::string>& values)
+{
+ Json::Value jsonArray = Json::arrayValue;
+ for (auto& it : values) {
+ jsonArray.append(it);
+ }
+ return jsonArray;
+}
+
+static Json::Value DumpToJsonArray(const std::vector<std::string>& values)
+{
+ Json::Value jsonArray = Json::arrayValue;
+ for (auto& it : values) {
+ jsonArray.append(it);
+ }
+ return jsonArray;
+}
+
+static Json::Value DumpRegExToJsonArray(
+ const std::vector<std::pair<cmsys::RegularExpression, std::string>>& values)
+{
+ Json::Value jsonArray = Json::arrayValue;
+ for (auto& it : values) {
+ jsonArray.append(it.second);
+ }
+ return jsonArray;
+}
+
+static Json::Value DumpMeasurementToJsonArray(
+ const std::map<std::string, std::string>& values)
+{
+ Json::Value jsonArray = Json::arrayValue;
+ for (auto& it : values) {
+ Json::Value measurement = Json::objectValue;
+ measurement["measurement"] = it.first;
+ measurement["value"] = it.second;
+ jsonArray.append(measurement);
+ }
+ return jsonArray;
+}
+
+static Json::Value DumpTimeoutAfterMatch(
+ cmCTestTestHandler::cmCTestTestProperties& testProperties)
+{
+ Json::Value timeoutAfterMatch = Json::objectValue;
+ timeoutAfterMatch["timeout"] = testProperties.AlternateTimeout.count();
+ timeoutAfterMatch["regex"] =
+ DumpRegExToJsonArray(testProperties.TimeoutRegularExpressions);
+ return timeoutAfterMatch;
+}
+
+static Json::Value DumpCTestProperty(std::string const& name,
+ Json::Value value)
+{
+ Json::Value property = Json::objectValue;
+ property["name"] = name;
+ property["value"] = std::move(value);
+ return property;
+}
+
+static Json::Value DumpCTestProperties(
+ cmCTestTestHandler::cmCTestTestProperties& testProperties)
+{
+ Json::Value properties = Json::arrayValue;
+ if (!testProperties.AttachOnFail.empty()) {
+ properties.append(DumpCTestProperty(
+ "ATTACHED_FILES_ON_FAIL", DumpToJsonArray(testProperties.AttachOnFail)));
+ }
+ if (!testProperties.AttachedFiles.empty()) {
+ properties.append(DumpCTestProperty(
+ "ATTACHED_FILES", DumpToJsonArray(testProperties.AttachedFiles)));
+ }
+ if (testProperties.Cost != 0.0f) {
+ properties.append(
+ DumpCTestProperty("COST", static_cast<double>(testProperties.Cost)));
+ }
+ if (!testProperties.Depends.empty()) {
+ properties.append(
+ DumpCTestProperty("DEPENDS", DumpToJsonArray(testProperties.Depends)));
+ }
+ if (testProperties.Disabled) {
+ properties.append(DumpCTestProperty("DISABLED", testProperties.Disabled));
+ }
+ if (!testProperties.Environment.empty()) {
+ properties.append(DumpCTestProperty(
+ "ENVIRONMENT", DumpToJsonArray(testProperties.Environment)));
+ }
+ if (!testProperties.ErrorRegularExpressions.empty()) {
+ properties.append(DumpCTestProperty(
+ "FAIL_REGULAR_EXPRESSION",
+ DumpRegExToJsonArray(testProperties.ErrorRegularExpressions)));
+ }
+ if (!testProperties.FixturesCleanup.empty()) {
+ properties.append(DumpCTestProperty(
+ "FIXTURES_CLEANUP", DumpToJsonArray(testProperties.FixturesCleanup)));
+ }
+ if (!testProperties.FixturesRequired.empty()) {
+ properties.append(DumpCTestProperty(
+ "FIXTURES_REQUIRED", DumpToJsonArray(testProperties.FixturesRequired)));
+ }
+ if (!testProperties.FixturesSetup.empty()) {
+ properties.append(DumpCTestProperty(
+ "FIXTURES_SETUP", DumpToJsonArray(testProperties.FixturesSetup)));
+ }
+ if (!testProperties.Labels.empty()) {
+ properties.append(
+ DumpCTestProperty("LABELS", DumpToJsonArray(testProperties.Labels)));
+ }
+ if (!testProperties.Measurements.empty()) {
+ properties.append(DumpCTestProperty(
+ "MEASUREMENT", DumpMeasurementToJsonArray(testProperties.Measurements)));
+ }
+ if (!testProperties.RequiredRegularExpressions.empty()) {
+ properties.append(DumpCTestProperty(
+ "PASS_REGULAR_EXPRESSION",
+ DumpRegExToJsonArray(testProperties.RequiredRegularExpressions)));
+ }
+ if (testProperties.WantAffinity) {
+ properties.append(
+ DumpCTestProperty("PROCESSOR_AFFINITY", testProperties.WantAffinity));
+ }
+ if (testProperties.Processors != 1) {
+ properties.append(
+ DumpCTestProperty("PROCESSORS", testProperties.Processors));
+ }
+ if (!testProperties.RequiredFiles.empty()) {
+ properties["REQUIRED_FILES"] =
+ DumpToJsonArray(testProperties.RequiredFiles);
+ }
+ if (!testProperties.LockedResources.empty()) {
+ properties.append(DumpCTestProperty(
+ "RESOURCE_LOCK", DumpToJsonArray(testProperties.LockedResources)));
+ }
+ if (testProperties.RunSerial) {
+ properties.append(
+ DumpCTestProperty("RUN_SERIAL", testProperties.RunSerial));
+ }
+ if (testProperties.SkipReturnCode != -1) {
+ properties.append(
+ DumpCTestProperty("SKIP_RETURN_CODE", testProperties.SkipReturnCode));
+ }
+ if (testProperties.ExplicitTimeout) {
+ properties.append(
+ DumpCTestProperty("TIMEOUT", testProperties.Timeout.count()));
+ }
+ if (!testProperties.TimeoutRegularExpressions.empty()) {
+ properties.append(DumpCTestProperty(
+ "TIMEOUT_AFTER_MATCH", DumpTimeoutAfterMatch(testProperties)));
+ }
+ if (testProperties.WillFail) {
+ properties.append(DumpCTestProperty("WILL_FAIL", testProperties.WillFail));
+ }
+ if (!testProperties.Directory.empty()) {
+ properties.append(
+ DumpCTestProperty("WORKING_DIRECTORY", testProperties.Directory));
+ }
+ return properties;
+}
+
+class BacktraceData
+{
+ std::unordered_map<std::string, Json::ArrayIndex> CommandMap;
+ std::unordered_map<std::string, Json::ArrayIndex> FileMap;
+ std::unordered_map<cmListFileContext const*, Json::ArrayIndex> NodeMap;
+ Json::Value Commands = Json::arrayValue;
+ Json::Value Files = Json::arrayValue;
+ Json::Value Nodes = Json::arrayValue;
+
+ Json::ArrayIndex AddCommand(std::string const& command)
+ {
+ auto i = this->CommandMap.find(command);
+ if (i == this->CommandMap.end()) {
+ i = this->CommandMap.emplace(command, this->Commands.size()).first;
+ this->Commands.append(command);
+ }
+ return i->second;
+ }
+
+ Json::ArrayIndex AddFile(std::string const& file)
+ {
+ auto i = this->FileMap.find(file);
+ if (i == this->FileMap.end()) {
+ i = this->FileMap.emplace(file, this->Files.size()).first;
+ this->Files.append(file);
+ }
+ return i->second;
+ }
+
+public:
+ bool Add(cmListFileBacktrace const& bt, Json::ArrayIndex& index);
+ Json::Value Dump();
+};
+
+bool BacktraceData::Add(cmListFileBacktrace const& bt, Json::ArrayIndex& index)
+{
+ if (bt.Empty()) {
+ return false;
+ }
+ cmListFileContext const* top = &bt.Top();
+ auto found = this->NodeMap.find(top);
+ if (found != this->NodeMap.end()) {
+ index = found->second;
+ return true;
+ }
+ Json::Value entry = Json::objectValue;
+ entry["file"] = this->AddFile(top->FilePath);
+ if (top->Line) {
+ entry["line"] = static_cast<int>(top->Line);
+ }
+ if (!top->Name.empty()) {
+ entry["command"] = this->AddCommand(top->Name);
+ }
+ Json::ArrayIndex parent;
+ if (this->Add(bt.Pop(), parent)) {
+ entry["parent"] = parent;
+ }
+ index = this->NodeMap[top] = this->Nodes.size();
+ this->Nodes.append(std::move(entry)); // NOLINT(*)
+ return true;
+}
+
+Json::Value BacktraceData::Dump()
+{
+ Json::Value backtraceGraph;
+ this->CommandMap.clear();
+ this->FileMap.clear();
+ this->NodeMap.clear();
+ backtraceGraph["commands"] = std::move(this->Commands);
+ backtraceGraph["files"] = std::move(this->Files);
+ backtraceGraph["nodes"] = std::move(this->Nodes);
+ return backtraceGraph;
+}
+
+static void AddBacktrace(BacktraceData& backtraceGraph, Json::Value& object,
+ cmListFileBacktrace const& bt)
+{
+ Json::ArrayIndex backtrace;
+ if (backtraceGraph.Add(bt, backtrace)) {
+ object["backtrace"] = backtrace;
+ }
+}
+
+static Json::Value DumpCTestInfo(
+ cmCTestRunTest& testRun,
+ cmCTestTestHandler::cmCTestTestProperties& testProperties,
+ BacktraceData& backtraceGraph)
+{
+ Json::Value testInfo = Json::objectValue;
+ // test name should always be present
+ testInfo["name"] = testProperties.Name;
+ std::string const& config = testRun.GetCTest()->GetConfigType();
+ if (!config.empty()) {
+ testInfo["config"] = config;
+ }
+ std::string const& command = testRun.GetActualCommand();
+ if (!command.empty()) {
+ std::vector<std::string> commandAndArgs;
+ commandAndArgs.push_back(command);
+ const std::vector<std::string>& args = testRun.GetArguments();
+ if (!args.empty()) {
+ commandAndArgs.reserve(args.size() + 1);
+ commandAndArgs.insert(commandAndArgs.end(), args.begin(), args.end());
+ }
+ testInfo["command"] = DumpToJsonArray(commandAndArgs);
+ }
+ Json::Value properties = DumpCTestProperties(testProperties);
+ if (!properties.empty()) {
+ testInfo["properties"] = properties;
+ }
+ if (!testProperties.Backtrace.Empty()) {
+ AddBacktrace(backtraceGraph, testInfo, testProperties.Backtrace);
+ }
+ return testInfo;
+}
+
+static Json::Value DumpVersion(int major, int minor)
+{
+ Json::Value version = Json::objectValue;
+ version["major"] = major;
+ version["minor"] = minor;
+ return version;
+}
+
+void cmCTestMultiProcessHandler::PrintOutputAsJson()
+{
+ this->TestHandler->SetMaxIndex(this->FindMaxIndex());
+
+ Json::Value result = Json::objectValue;
+ result["kind"] = "ctestInfo";
+ result["version"] = DumpVersion(1, 0);
+
+ BacktraceData backtraceGraph;
+ Json::Value tests = Json::arrayValue;
+ for (auto& it : this->Properties) {
+ cmCTestTestHandler::cmCTestTestProperties& p = *it.second;
+
+ // Don't worry if this fails, we are only showing the test list, not
+ // running the tests
+ cmWorkingDirectory workdir(p.Directory);
+ cmCTestRunTest testRun(*this);
+ testRun.SetIndex(p.Index);
+ testRun.SetTestProperties(&p);
+ testRun.ComputeArguments();
+
+ Json::Value testInfo = DumpCTestInfo(testRun, p, backtraceGraph);
+ tests.append(testInfo);
+ }
+ result["backtraceGraph"] = backtraceGraph.Dump();
+ result["tests"] = std::move(tests);
+
+ Json::StreamWriterBuilder builder;
+ builder["indentation"] = " ";
+ std::unique_ptr<Json::StreamWriter> jout(builder.newStreamWriter());
+ jout->write(result, &std::cout);
+}
+
// For ShowOnly mode
void cmCTestMultiProcessHandler::PrintTestList()
{
+ if (this->CTest->GetOutputAsJson()) {
+ PrintOutputAsJson();
+ return;
+ }
+
this->TestHandler->SetMaxIndex(this->FindMaxIndex());
int count = 0;
diff --git a/Source/CTest/cmCTestMultiProcessHandler.h b/Source/CTest/cmCTestMultiProcessHandler.h
index 3927a8a..93bb880 100644
--- a/Source/CTest/cmCTestMultiProcessHandler.h
+++ b/Source/CTest/cmCTestMultiProcessHandler.h
@@ -51,6 +51,7 @@ public:
void SetParallelLevel(size_t);
void SetTestLoad(unsigned long load);
virtual void RunTests();
+ void PrintOutputAsJson();
void PrintTestList();
void PrintLabels();
diff --git a/Source/CTest/cmCTestRunTest.h b/Source/CTest/cmCTestRunTest.h
index 10dceca..c786413 100644
--- a/Source/CTest/cmCTestRunTest.h
+++ b/Source/CTest/cmCTestRunTest.h
@@ -78,6 +78,10 @@ public:
cmCTest* GetCTest() const { return this->CTest; }
+ std::string& GetActualCommand() { return this->ActualCommand; }
+
+ const std::vector<std::string>& GetArguments() { return this->Arguments; }
+
void FinalizeTest();
bool TimedOutForStopTime() const { return this->TimeoutIsForStopTime; }
diff --git a/Source/CTest/cmCTestTestHandler.cxx b/Source/CTest/cmCTestTestHandler.cxx
index 2e1bb0a..9fd2299 100644
--- a/Source/CTest/cmCTestTestHandler.cxx
+++ b/Source/CTest/cmCTestTestHandler.cxx
@@ -2147,6 +2147,32 @@ bool cmCTestTestHandler::SetTestsProperties(
for (std::string const& t : tests) {
for (cmCTestTestProperties& rt : this->TestList) {
if (t == rt.Name) {
+ if (key == "_BACKTRACE_TRIPLES") {
+ std::vector<std::string> triples;
+ // allow empty args in the triples
+ cmSystemTools::ExpandListArgument(val, triples, true);
+
+ // Ensure we have complete triples otherwise the data is corrupt.
+ if (triples.size() % 3 == 0) {
+ cmState state;
+ rt.Backtrace = cmListFileBacktrace(state.CreateBaseSnapshot());
+
+ // the first entry represents the top of the trace so we need to
+ // reconstruct the backtrace in reverse
+ for (size_t i = triples.size(); i >= 3; i -= 3) {
+ cmListFileContext fc;
+ fc.FilePath = triples[i - 3];
+ long line = 0;
+ if (!cmSystemTools::StringToLong(triples[i - 2].c_str(),
+ &line)) {
+ line = 0;
+ }
+ fc.Line = line;
+ fc.Name = triples[i - 1];
+ rt.Backtrace = rt.Backtrace.Push(fc);
+ }
+ }
+ }
if (key == "WILL_FAIL") {
rt.WillFail = cmSystemTools::IsOn(val);
}
diff --git a/Source/CTest/cmCTestTestHandler.h b/Source/CTest/cmCTestTestHandler.h
index bcacf23..0b557db 100644
--- a/Source/CTest/cmCTestTestHandler.h
+++ b/Source/CTest/cmCTestTestHandler.h
@@ -7,6 +7,7 @@
#include "cmCTestGenericHandler.h"
#include "cmDuration.h"
+#include "cmListFileCache.h"
#include "cmsys/RegularExpression.hxx"
#include <chrono>
@@ -141,6 +142,8 @@ public:
std::set<std::string> FixturesCleanup;
std::set<std::string> FixturesRequired;
std::set<std::string> RequireSuccessDepends;
+ // Private test generator properties used to track backtraces
+ cmListFileBacktrace Backtrace;
};
struct cmCTestTestResult
diff --git a/Source/cmCTest.cxx b/Source/cmCTest.cxx
index 7c19864..225c99f 100644
--- a/Source/cmCTest.cxx
+++ b/Source/cmCTest.cxx
@@ -278,6 +278,8 @@ cmCTest::cmCTest()
this->ExtraVerbose = false;
this->ProduceXML = false;
this->ShowOnly = false;
+ this->OutputAsJson = false;
+ this->OutputAsJsonVersion = 1;
this->RunConfigurationScript = false;
this->UseHTTP10 = false;
this->PrintLabels = false;
@@ -1930,6 +1932,20 @@ bool cmCTest::HandleCommandLineArguments(size_t& i,
if (this->CheckArgument(arg, "-N", "--show-only")) {
this->ShowOnly = true;
}
+ if (cmSystemTools::StringStartsWith(arg.c_str(), "--show-only=")) {
+ this->ShowOnly = true;
+
+ // Check if a specific format is requested. Defaults to human readable
+ // text.
+ std::string argWithFormat = "--show-only=";
+ std::string format = arg.substr(argWithFormat.length());
+ if (format == "json-v1") {
+ // Force quiet mode so the only output is the json object model.
+ this->Quiet = true;
+ this->OutputAsJson = true;
+ this->OutputAsJsonVersion = 1;
+ }
+ }
if (this->CheckArgument(arg, "-O", "--output-log") && i < args.size() - 1) {
i++;
@@ -2630,6 +2646,16 @@ bool cmCTest::GetShowOnly()
return this->ShowOnly;
}
+bool cmCTest::GetOutputAsJson()
+{
+ return this->OutputAsJson;
+}
+
+int cmCTest::GetOutputAsJsonVersion()
+{
+ return this->OutputAsJsonVersion;
+}
+
int cmCTest::GetMaxTestNameWidth() const
{
return this->MaxTestNameWidth;
diff --git a/Source/cmCTest.h b/Source/cmCTest.h
index 480204a..2b40ca3 100644
--- a/Source/cmCTest.h
+++ b/Source/cmCTest.h
@@ -215,6 +215,10 @@ public:
/** Should we only show what we would do? */
bool GetShowOnly();
+ bool GetOutputAsJson();
+
+ int GetOutputAsJsonVersion();
+
bool ShouldUseHTTP10() { return this->UseHTTP10; }
bool ShouldPrintLabels() { return this->PrintLabels; }
@@ -507,6 +511,8 @@ private:
t_TestingHandlers TestingHandlers;
bool ShowOnly;
+ bool OutputAsJson;
+ int OutputAsJsonVersion;
/** Map of configuration properties */
typedef std::map<std::string, std::string> CTestConfigurationMap;
diff --git a/Source/cmTestGenerator.cxx b/Source/cmTestGenerator.cxx
index 796d2df..e4ced6e 100644
--- a/Source/cmTestGenerator.cxx
+++ b/Source/cmTestGenerator.cxx
@@ -7,14 +7,16 @@
#include "cmGeneratorExpression.h"
#include "cmGeneratorTarget.h"
+#include "cmListFileCache.h"
#include "cmLocalGenerator.h"
#include "cmOutputConverter.h"
#include "cmProperty.h"
-#include "cmPropertyMap.h"
#include "cmStateTypes.h"
#include "cmSystemTools.h"
#include "cmTest.h"
+class cmPropertyMap;
+
cmTestGenerator::cmTestGenerator(
cmTest* test, std::vector<std::string> const& configurations)
: cmScriptGenerator("CTEST_CONFIGURATION_TYPE", configurations)
@@ -121,16 +123,15 @@ void cmTestGenerator::GenerateScriptForConfig(std::ostream& os,
// Output properties for the test.
cmPropertyMap& pm = this->Test->GetProperties();
- if (!pm.empty()) {
- os << indent << "set_tests_properties(" << this->Test->GetName()
- << " PROPERTIES ";
- for (auto const& i : pm) {
- os << " " << i.first << " "
- << cmOutputConverter::EscapeForCMake(
- ge.Parse(i.second.GetValue())->Evaluate(this->LG, config));
- }
- os << ")" << std::endl;
+ os << indent << "set_tests_properties(" << this->Test->GetName()
+ << " PROPERTIES ";
+ for (auto const& i : pm) {
+ os << " " << i.first << " "
+ << cmOutputConverter::EscapeForCMake(
+ ge.Parse(i.second.GetValue())->Evaluate(this->LG, config));
}
+ this->GenerateInternalProperties(os);
+ os << ")" << std::endl;
}
void cmTestGenerator::GenerateScriptNoConfig(std::ostream& os, Indent indent)
@@ -179,13 +180,37 @@ void cmTestGenerator::GenerateOldStyle(std::ostream& fout, Indent indent)
// Output properties for the test.
cmPropertyMap& pm = this->Test->GetProperties();
- if (!pm.empty()) {
- fout << indent << "set_tests_properties(" << this->Test->GetName()
- << " PROPERTIES ";
- for (auto const& i : pm) {
- fout << " " << i.first << " "
- << cmOutputConverter::EscapeForCMake(i.second.GetValue());
+ fout << indent << "set_tests_properties(" << this->Test->GetName()
+ << " PROPERTIES ";
+ for (auto const& i : pm) {
+ fout << " " << i.first << " "
+ << cmOutputConverter::EscapeForCMake(i.second.GetValue());
+ }
+ this->GenerateInternalProperties(fout);
+ fout << ")" << std::endl;
+}
+
+void cmTestGenerator::GenerateInternalProperties(std::ostream& os)
+{
+ cmListFileBacktrace bt = this->Test->GetBacktrace();
+ if (bt.Empty()) {
+ return;
+ }
+
+ os << " "
+ << "_BACKTRACE_TRIPLES"
+ << " \"";
+
+ bool prependTripleSeparator = false;
+ while (!bt.Empty()) {
+ const auto& entry = bt.Top();
+ if (prependTripleSeparator) {
+ os << ";";
}
- fout << ")" << std::endl;
+ os << entry.FilePath << ";" << entry.Line << ";" << entry.Name;
+ bt = bt.Pop();
+ prependTripleSeparator = true;
}
+
+ os << "\"";
}
diff --git a/Source/cmTestGenerator.h b/Source/cmTestGenerator.h
index 73d05a3..f26d2ff 100644
--- a/Source/cmTestGenerator.h
+++ b/Source/cmTestGenerator.h
@@ -35,6 +35,9 @@ public:
cmTest* GetTest() const;
+private:
+ void GenerateInternalProperties(std::ostream& os);
+
protected:
void GenerateScriptConfigs(std::ostream& os, Indent indent) override;
void GenerateScriptActions(std::ostream& os, Indent indent) override;
diff --git a/Source/ctest.cxx b/Source/ctest.cxx
index ca412ae..8ba126f 100644
--- a/Source/ctest.cxx
+++ b/Source/ctest.cxx
@@ -46,7 +46,10 @@ static const char* cmDocumentationOptions[][2] = {
"given number of jobs." },
{ "-Q,--quiet", "Make ctest quiet." },
{ "-O <file>, --output-log <file>", "Output to log file" },
- { "-N,--show-only", "Disable actual execution of tests." },
+ { "-N,--show-only[=format]",
+ "Disable actual execution of tests. The optional 'format' defines the "
+ "format of the test information and can be 'human' for the current text "
+ "format or 'json-v1' for json format. Defaults to 'human'." },
{ "-L <regex>, --label-regex <regex>",
"Run tests with labels matching "
"regular expression." },