add catch2 unit tests for Alignment/HIPAlignmentAlgorithm

Alignment/HIPAlignmentAlgorithm/test/BuildFile.xml

@@ -0,0 +1,6 @@
+<environment>
+  <bin file="testHIPAnalyzers.cc" name="testHIPAnalyzers">
+    <use name="FWCore/TestProcessor"/>
+    <use name="catch2"/>
+  </bin>
+</environment>  

Alignment/HIPAlignmentAlgorithm/test/testHIPAnalyzers.cc

@@ -0,0 +1,78 @@
+#include "FWCore/TestProcessor/interface/TestProcessor.h"
+#include "FWCore/Utilities/interface/Exception.h"
+#include "FWCore/ServiceRegistry/interface/Service.h"
+#include "CommonTools/UtilAlgos/interface/TFileService.h"
+
+#define CATCH_CONFIG_MAIN
+#include "catch.hpp"
+
+// Function to run the catch2 tests
+//___________________________________________________________________________________________
+void runTestForAnalyzer(const std::string& baseConfig, const std::string& analyzerName) {
+  edm::test::TestProcessor::Config config{baseConfig};
+
+  SECTION(analyzerName + " base configuration is OK") { REQUIRE_NOTHROW(edm::test::TestProcessor(config)); }
+
+  SECTION(analyzerName + " No Runs data") {
+    edm::test::TestProcessor tester(config);
+    REQUIRE_NOTHROW(tester.testWithNoRuns());
+  }
+
+  SECTION(analyzerName + " beginJob and endJob only") {
+    edm::test::TestProcessor tester(config);
+    REQUIRE_NOTHROW(tester.testBeginAndEndJobOnly());
+  }
+
+  // the following part is commented because the
+  // HIPTwoBodyDecayAnalyzer crashes on
+  // No "TransientTrackRecord" record found in the EventSetup.
+
+  /* 
+  SECTION("No event data") {
+   edm::test::TestProcessor tester(config);
+   REQUIRE_NOTHROW(tester.test());
+  }
+  */
+
+  SECTION("Run with no LuminosityBlocks") {
+    edm::test::TestProcessor tester(config);
+    REQUIRE_NOTHROW(tester.testRunWithNoLuminosityBlocks());
+  }
+
+  SECTION("LuminosityBlock with no Events") {
+    edm::test::TestProcessor tester(config);
+    REQUIRE_NOTHROW(tester.testLuminosityBlockWithNoEvents());
+  }
+}
+
+// Function to generate base configuration string
+//___________________________________________________________________________________________
+std::string generateBaseConfig(const std::string& analyzerName, const std::string& rootFileName) {
+  // Define a raw string literal
+  constexpr const char* rawString = R"_(from FWCore.TestProcessor.TestProcess import *
+from Alignment.HIPAlignmentAlgorithm.{}_cfi import {}
+process = TestProcess()
+process.trackAnalyzer = {}
+process.moduleToTest(process.trackAnalyzer)
+process.load("TrackingTools.TransientTrack.TransientTrackBuilder_cfi")
+process.add_(cms.ESProducer("TransientTrackBuilderESProducer"))
+process.add_(cms.Service('MessageLogger'))
+process.add_(cms.Service('JobReportService'))
+process.add_(cms.Service('TFileService',fileName=cms.string('{}')))
+    )_";
+
+  // Format the raw string literal using fmt::format
+  return fmt::format(rawString, analyzerName, analyzerName, analyzerName, rootFileName);
+}
+
+//___________________________________________________________________________________________
+TEST_CASE("LhcTrackAnalyzer tests", "[LhcTrackAnalyzer]") {
+  const std::string baseConfig = generateBaseConfig("lhcTrackAnalyzer", "testHIPAnalyzers1.root");
+  runTestForAnalyzer(baseConfig, "LhcTrackAnalyzer");
+}
+
+//___________________________________________________________________________________________
+TEST_CASE("HIPTwoBodyDecayAnalyzer tests", "[HIPTwoBodyDecayAnalyzer]") {
+  const std::string baseConfig = generateBaseConfig("hipTwoBodyDecayAnalyzer", "testHIPAnalyzers2.root");
+  runTestForAnalyzer(baseConfig, "HIPTwoBodyDecayAnalyzer");
+}