ci: support windows for getGitMatchingGroup

src/test/groovy/GetGitMatchingGroupStepTests.groovy

@@ -79,6 +79,8 @@ metricbeat/module/zookeeper/server/_meta/docs.asciidoc'''.stripMargin().stripInd
     def changeset = 'foo/bar/file.txt'
     helper.registerAllowedMethod('readFile', [String.class], { return changeset })
     def module = script.call(pattern: '([^\\/]+)\\/.*')
+    assertTrue(assertMethodCallOccurrences('bat', 0))
+    assertTrue(assertMethodCallContainsPattern('sh', 'git diff'))
     assertEquals('foo', module)
     assertJobStatusSuccess()
   }
@@ -147,15 +149,14 @@ bar/foo/subfolder'''.stripMargin().stripIndent()
   @Test
   void test_windows() throws Exception {
     def script = loadScript(scriptName)
+    def changeset = 'foo/bar/file.txt'
     helper.registerAllowedMethod('isUnix', [], { false })
-    try {
-      script.call()
-    } catch(e){
-      //NOOP
-    }
-    printCallStack()
-    assertTrue(assertMethodCallContainsPattern('error', 'windows is not supported yet.'))
-    assertJobStatusFailure()
+    helper.registerAllowedMethod('readFile', [String.class], { return changeset })
+    def module = script.call(pattern: '([^\\/]+)\\/.*')
+    assertTrue(assertMethodCallOccurrences('sh', 0))
+    assertTrue(assertMethodCallContainsPattern('bat', 'git diff'))
+    assertEquals('foo', module)
+    assertJobStatusSuccess()
   }
 
   @Test

vars/getGitMatchingGroup.groovy

@@ -35,9 +35,6 @@
 
 */
 def call(Map params = [:]) {
-  if(!isUnix()){
-    error('getGitMatchingGroup: windows is not supported yet.')
-  }
   def pattern = params.containsKey('pattern') ? params.pattern : error('getGitMatchingGroup: Missing pattern argument.')
   def exclude = params.get('exclude', '')
   def from = params.get('from', env.CHANGE_TARGET?.trim() ? "origin/${env.CHANGE_TARGET}" : env.GIT_PREVIOUS_COMMIT)
@@ -46,7 +43,13 @@ def call(Map params = [:]) {
   def gitDiffFile = 'git-diff.txt'
   def group = ''
   if (from?.trim() && to?.trim()) {
-    def changes = sh(script: "git diff --name-only ${from}...${to} > ${gitDiffFile}", returnStdout: true)
+    def changes
+    def command = "git diff --name-only ${from}...${to} > ${gitDiffFile}"
+    if (isUnix()) {
+      changes = sh(script: command, returnStdout: true)
+    } else {
+      changes = bat(script: command, returnStdout: true)
+    }
     group = getGroup(gitDiffFile, pattern, exclude)
     log(level: 'INFO', text: "getGitMatchingGroup: ${group.trim() ?: 'not found'} with regex ${pattern}")
   } else {