Extend integration tests and sync README (#714)

README.md

@@ -917,6 +917,10 @@ unclassified:
 ```
 </details>
 
+### Warnings NG Plugin
+
+The [Warnings NG Plugin](https://plugins.jenkins.io/warnings-ng/) is used to record and manage issues within your Jenkins Pipelines. Supported versions of this plugin start at **11.0.0**. It is recommended to use these versions to ensure compatibility and stability.
+
 ## Debugging
 
 To change the job console log level to debug, the system property `ecutest.debugLog` should be set to `true`. This could be done either at startup

src/test/java/de/tracetronic/jenkins/plugins/ecutest/extension/warnings/WarningsRecorderIT.java

@@ -68,6 +68,36 @@ public void recordError() throws Exception {
         assertThat(build.getAction(ResultAction.class).getResult().getTotalErrorsSize(), is(1));
     }
 
+    @Test
+    public void recordWarnings() throws Exception {
+        final String issueFileName = "warnings.json";
+        final String issues = loadTestResource(issueFileName);
+
+        final FreeStyleProject project = createProject(issueFileName, issues);
+        final FreeStyleBuild build = jenkins.buildAndAssertStatus(Result.SUCCESS, project);
+
+        jenkins.assertLogContains("found 1 file", build);
+        jenkins.assertLogContains("found 3 issues", build);
+        jenkins.assertLogContains("Successfully processed file '" + issueFileName + "'", build);
+
+        assertThat(build.getAction(ResultAction.class).getResult().getIssues().size(), is(3));
+    }
+
+    @Test
+    public void recordMixedSeverities() throws Exception {
+        final String issueFileName = "mixed-severities.json";
+        final String issues = loadTestResource(issueFileName);
+
+        final FreeStyleProject project = createProject(issueFileName, issues);
+        final FreeStyleBuild build = jenkins.buildAndAssertStatus(Result.FAILURE, project);
+
+        jenkins.assertLogContains("found 1 file", build);
+        jenkins.assertLogContains("found 3 issues", build);
+        jenkins.assertLogContains("Successfully processed file '" + issueFileName + "'", build);
+
+        assertThat(build.getAction(ResultAction.class).getResult().getIssues().size(), is(3));
+    }
+
     private FreeStyleProject createProject(final String issueFileName, final String issues) throws IOException {
         final FreeStyleProject project = jenkins.createFreeStyleProject();
         project.getBuildersList().add(new TestBuilder() {

src/test/resources/de/tracetronic/jenkins/plugins/ecutest/extension/warnings/WarningsRecorderIT/mixed-severities.json

@@ -0,0 +1,24 @@
+{
+  "_class": "io.jenkins.plugins.analysis.core.restapi.ReportApi",
+  "issues": [
+    {
+      "description": "#1 Warning",
+      "fileName": "test.pkg",
+      "lineStart": 1,
+      "severity": "LOW"
+    },
+    {
+      "description": "#2 Info",
+      "fileName": "test.pkg",
+      "lineStart": 2,
+      "severity": "INFO"
+    },
+    {
+      "description": "#3 Error",
+      "fileName": "test.pkg",
+      "lineStart": 3,
+      "severity": "ERROR"
+    }
+  ],
+  "size": 3
+}

src/test/resources/de/tracetronic/jenkins/plugins/ecutest/extension/warnings/WarningsRecorderIT/warnings.json

@@ -0,0 +1,24 @@
+{
+  "_class": "io.jenkins.plugins.analysis.core.restapi.ReportApi",
+  "issues": [
+    {
+      "description": "#1 Warning",
+      "fileName": "test.pkg",
+      "lineStart": 1,
+      "severity": "LOW"
+    },
+    {
+      "description": "#2 Warning",
+      "fileName": "test.pkg",
+      "lineStart": 2,
+      "severity": "NORMAL"
+    },
+    {
+      "description": "#3 Warning",
+      "fileName": "test.pkg",
+      "lineStart": 3,
+      "severity": "HIGH"
+    }
+  ],
+  "size": 3
+}