produce nice test reports from mocha in jenkins (CAS-448)

It makes use of xunit (standard xml test output).

Jenkinsfile

@@ -23,6 +23,11 @@ pipeline {
           steps {
             sh 'nix-shell --run "./scripts/node-test.sh"'
           }
+          post {
+            always {
+              junit '*-xunit-report.xml'
+            }
+          }
         }
         stage('nix tests') {
           agent { label 'nixos-mayastor-kvm' }
@@ -38,6 +43,11 @@ pipeline {
           steps {
             sh 'nix-shell --run "./scripts/moac-test.sh"'
           }
+          post {
+            always {
+              junit 'moac-xunit-report.xml'
+            }
+          }
         }
       }
     }

csi/moac/test/multi_reporter.js

@@ -0,0 +1,31 @@
+// Mocha does not support multiple reporters running at once. So we use this
+// simple wrapper as suggested in:
+// https://github.com/mochajs/mocha/pull/1360#issuecomment-407404831
+
+const mocha = require('mocha');
+
+function MultiReporter (runner, options) {
+  this.reports = [];
+  if (!options.reporterOptions.reporters) {
+    console.log('\nneeds --reporter-options reporters="SPACE_SEPARATED_MOCHA_REPORTS"');
+    return;
+  }
+  const self = this;
+  options.reporterOptions.reporters.split(' ').forEach(function (report) {
+    const ReportClass = mocha.reporters[report];
+    if (!ReportClass) {
+      console.log('\ninvalid report class available: ' + Object.keys(mocha.reporters).join(','));
+      return;
+    }
+    const reportInstance = new ReportClass(runner, options);
+    self.reports.push(reportInstance);
+  });
+}
+
+MultiReporter.prototype.epilogue = function () {
+  this.reports.forEach(function (reportInstance) {
+    reportInstance.epilogue();
+  });
+};
+
+exports = module.exports = MultiReporter;

mayastor-test/multi_reporter.js

@@ -0,0 +1,31 @@
+// Mocha does not support multiple reporters running at once. So we use this
+// simple wrapper as suggested in:
+// https://github.com/mochajs/mocha/pull/1360#issuecomment-407404831
+
+const mocha = require('mocha');
+
+function MultiReporter (runner, options) {
+  this.reports = [];
+  if (!options.reporterOptions.reporters) {
+    console.log('\nneeds --reporter-options reporters="SPACE_SEPARATED_MOCHA_REPORTS"');
+    return;
+  }
+  const self = this;
+  options.reporterOptions.reporters.split(' ').forEach(function (report) {
+    const ReportClass = mocha.reporters[report];
+    if (!ReportClass) {
+      console.log('\ninvalid report class available: ' + Object.keys(mocha.reporters).join(','));
+      return;
+    }
+    const reportInstance = new ReportClass(runner, options);
+    self.reports.push(reportInstance);
+  });
+}
+
+MultiReporter.prototype.epilogue = function () {
+  this.reports.forEach(function (reportInstance) {
+    reportInstance.epilogue();
+  });
+};
+
+exports = module.exports = MultiReporter;

scripts/moac-test.sh

@@ -6,5 +6,7 @@ cd csi/moac
 npm install
 npm run prepare
 npm run compile
-# TODO: Add XML output for jenkins
-./node_modules/mocha/bin/mocha test/index.js
+
+./node_modules/mocha/bin/mocha test/index.js \
+    --reporter test/multi_reporter.js \
+    --reporter-options reporters="xunit spec",output=../../moac-xunit-report.xml

scripts/node-test.sh

@@ -7,10 +7,9 @@ export PATH=$PATH:${HOME}/.cargo/bin
 cargo build --all
 cd mayastor-test
 npm install
-./node_modules/mocha/bin/mocha test_cli.js
-./node_modules/mocha/bin/mocha test_replica.js
-./node_modules/mocha/bin/mocha test_nexus.js
-./node_modules/mocha/bin/mocha test_csi.js
-./node_modules/mocha/bin/mocha test_rebuild.js
-./node_modules/mocha/bin/mocha test_snapshot.js
-./node_modules/mocha/bin/mocha test_nats.js
+
+for ts in cli replica nexus csi rebuild snapshot nats; do
+  ./node_modules/mocha/bin/mocha test_${ts}.js \
+      --reporter ./multi_reporter.js \
+      --reporter-options reporters="xunit spec",output=../${ts}-xunit-report.xml
+done