[PLUTO-1411] Add semgrep test

Author: zhamborova

.github/workflows/it-test.yml

@@ -52,4 +52,7 @@ jobs:
           run_test "pylint" "."
 
           # Run Semgrep tests with rules sorting
-          run_test "semgrep" ".runs[0].tool.driver.rules |= if . then sort_by(.id) else . end"
+          run_test "semgrep" ".runs[0].tool.driver.rules |= if . then sort_by(.id) else . end"
+
+          # Run PMD tests with rules sorting
+          run_test "pmd" ".runs[0].tool.driver.rules |= if . then sort_by(.id) else . end"

plugins/tools/pmd/test/src/.codacy/codacy.yaml

@@ -0,0 +1,3 @@
+runtimes:
+tools:
+    - [email protected]

plugins/tools/pmd/test/src/.codacy/tools-configs/ruleset.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ruleset name="Test PMD Ruleset"
+         xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 http://pmd.sourceforge.net/ruleset_2_0_0.xsd">
+    
+    <description>Test PMD ruleset</description>
+
+    <rule ref="category/java/bestpractices.xml/UnusedPrivateField"/>
+    <rule ref="category/java/errorprone.xml/UnconditionalIfStatement"/>
+</ruleset> 

plugins/tools/pmd/test/src/Test.java

@@ -0,0 +1,14 @@
+public class Test {
+    private String unusedField; // PMD: UnusedPrivateField
+
+    public void testMethod() {
+        if (true) { // PMD: UnconditionalIfStatement
+            System.out.println("This is always true");
+        }
+        
+        String str = null;
+        if (str.equals("test")) { // PMD: NullPointerException
+            System.out.println("This will cause NPE");
+        }
+    }
+} 

plugins/tools/pmd/test/src/expected.sarif

@@ -0,0 +1,117 @@
+{
+  "version": "2.1.0",
+  "$schema": "https://json.schemastore.org/sarif-2.1.0.json",
+  "runs": [
+    {
+      "tool": {
+        "driver": {
+          "name": "PMD",
+          "version": "6.55.0",
+          "rules": [
+            {
+              "id": "UnusedPrivateField",
+              "name": "UnusedPrivateField",
+              "shortDescription": {
+                "text": "Unused private field"
+              },
+              "fullDescription": {
+                "text": "Detects when a private field is declared and/or assigned a value, but never used."
+              },
+              "helpUri": "https://pmd.github.io/pmd-6.55.0/pmd_rules_java_bestpractices.html#unusedprivatefield"
+            },
+            {
+              "id": "UnconditionalIfStatement",
+              "name": "UnconditionalIfStatement",
+              "shortDescription": {
+                "text": "Unconditional if statement"
+              },
+              "fullDescription": {
+                "text": "Do not use 'if' statements that are always true or always false."
+              },
+              "helpUri": "https://pmd.github.io/pmd-6.55.0/pmd_rules_java_errorprone.html#unconditionalifstatement"
+            },
+            {
+              "id": "NullPointerException",
+              "name": "NullPointerException",
+              "shortDescription": {
+                "text": "Null pointer exception"
+              },
+              "fullDescription": {
+                "text": "Code can throw a NullPointerException."
+              },
+              "helpUri": "https://pmd.github.io/pmd-6.55.0/pmd_rules_java_errorprone.html#nullpointerexception"
+            }
+          ]
+        }
+      },
+      "results": [
+        {
+          "ruleId": "UnusedPrivateField",
+          "level": "warning",
+          "message": {
+            "text": "The private field 'unusedField' is assigned but never used"
+          },
+          "locations": [
+            {
+              "physicalLocation": {
+                "artifactLocation": {
+                  "uri": "file:///Test.java"
+                },
+                "region": {
+                  "startLine": 2,
+                  "startColumn": 5,
+                  "endLine": 2,
+                  "endColumn": 25
+                }
+              }
+            }
+          ]
+        },
+        {
+          "ruleId": "UnconditionalIfStatement",
+          "level": "warning",
+          "message": {
+            "text": "Do not use 'if' statements that are always true"
+          },
+          "locations": [
+            {
+              "physicalLocation": {
+                "artifactLocation": {
+                  "uri": "file:///Test.java"
+                },
+                "region": {
+                  "startLine": 5,
+                  "startColumn": 9,
+                  "endLine": 5,
+                  "endColumn": 15
+                }
+              }
+            }
+          ]
+        },
+        {
+          "ruleId": "NullPointerException",
+          "level": "warning",
+          "message": {
+            "text": "Potential null pointer dereference of str"
+          },
+          "locations": [
+            {
+              "physicalLocation": {
+                "artifactLocation": {
+                  "uri": "file:///Test.java"
+                },
+                "region": {
+                  "startLine": 10,
+                  "startColumn": 9,
+                  "endLine": 10,
+                  "endColumn": 25
+                }
+              }
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}