fix: Support Azure DevOps repository urls without project (#490)

Signed-off-by: Anatolii Bazko <abazko@redhat.com>

wsmaster/che-core-api-factory-azure-devops/src/main/java/org/eclipse/che/api/factory/server/azure/devops/AzureDevOpsURLParser.java

@@ -51,7 +51,7 @@ public class AzureDevOpsURLParser {
     this.azureDevOpsPattern =
         compile(
             format(
-                "^https://(?<organizationCanIgnore>[^@]++)?@?%s/(?<organization>[^/]++)/?(?<project>[^/]++)/_git/"
+                "^https://(?<organizationCanIgnore>[^@]++)?@?%s/(?<organization>[^/]++)/((?<project>[^/]++)/)?_git/"
                     + "(?<repoName>[^?]++)"
                     + "([?&]path=(?<path>[^&]++))?"
                     + "([?&]version=GT(?<tag>[^&]++))?"
@@ -67,17 +67,20 @@ public class AzureDevOpsURLParser {
   public AzureDevOpsUrl parse(String url) {
     Matcher matcher = azureDevOpsPattern.matcher(url);
     if (!matcher.matches()) {
-      throw new IllegalArgumentException(
-          format(
-              "The given url %s is not a valid. It should start with https://<organization>@%s/ or https://%s/",
-              url, azureDevOpsScmApiEndpointHost, azureDevOpsScmApiEndpointHost));
+      throw new IllegalArgumentException(format("The given url %s is not a valid.", url));
+    }
+
+    String project = null;
+    try {
+      project = matcher.group("project");
+    } catch (IllegalArgumentException e) {
     }
 
-    String project = matcher.group("project");
     String repoName = matcher.group("repoName");
     if (repoName.endsWith(".git")) {
       repoName = repoName.substring(0, repoName.length() - 4);
     }
+
     String organization = matcher.group("organization");
     String branch = matcher.group("branch");
     String tag = matcher.group("tag");

wsmaster/che-core-api-factory-azure-devops/src/main/java/org/eclipse/che/api/factory/server/azure/devops/AzureDevOpsUrl.java

@@ -149,7 +149,11 @@ public class AzureDevOpsUrl extends DefaultFactoryUrl {
   }
 
   private StringJoiner getRepoPathJoiner() {
-    return new StringJoiner("/").add(hostName).add(organization).add(project);
+    StringJoiner repoPath = new StringJoiner("/").add(hostName).add(organization);
+    if (project != null) {
+      repoPath.add("_git");
+    }
+    return repoPath;
   }
 
   @Override

wsmaster/che-core-api-factory-azure-devops/src/test/java/org/eclipse/che/api/factory/server/azure/devops/AzureDevOpsURLParserTest.java

@@ -133,6 +133,7 @@ public class AzureDevOpsURLParserTest {
         null,
         "MyTag"
       },
+      {"https://MyOrg@dev.azure.com/MyOrg/_git/MyRepo", "MyOrg", null, "MyRepo", null, null},
     };
   }