fix(codebuild): allow FILE_PATH webhook filter for BitBucket (#13186)

Remove restrictions around FILE_PATH for Bitbucket sources as this is
supported by CloudFormation now.

Closes #13175


----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: leimd

packages/@aws-cdk/aws-codebuild/lib/source.ts

@@ -381,7 +381,7 @@ export class FilterGroup {
    * Create a new FilterGroup with an added condition:
    * the push that is the source of the event must affect a file that matches the given pattern.
    * Note that you can only use this method if this Group contains only the `PUSH` event action,
-   * and only for GitHub and GitHubEnterprise sources.
+   * and only for GitHub, Bitbucket and GitHubEnterprise sources.
    *
    * @param pattern a regular expression
    */
@@ -393,7 +393,7 @@ export class FilterGroup {
    * Create a new FilterGroup with an added condition:
    * the push that is the source of the event must not affect a file that matches the given pattern.
    * Note that you can only use this method if this Group contains only the `PUSH` event action,
-   * and only for GitHub and GitHubEnterprise sources.
+   * and only for GitHub, Bitbucket and GitHubEnterprise sources.
    *
    * @param pattern a regular expression
    */
@@ -788,11 +788,6 @@ class BitBucketSource extends ThirdPartyGitSource {
       throw new Error('BitBucket sources do not support the PULL_REQUEST_REOPENED webhook event action');
     }
 
-    // they also don't support file path conditions
-    if (this.anyWebhookFilterContainsFilePathConditions()) {
-      throw new Error('BitBucket sources do not support file path conditions for webhook filters');
-    }
-
     const superConfig = super.bind(_scope, _project);
     return {
       sourceProperty: {
@@ -809,12 +804,6 @@ class BitBucketSource extends ThirdPartyGitSource {
       return fg._actions.findIndex(a => a === EventAction.PULL_REQUEST_REOPENED) !== -1;
     }) !== -1;
   }
-
-  private anyWebhookFilterContainsFilePathConditions() {
-    return this.webhookFilters.findIndex(fg => {
-      return fg._filters.findIndex(f => f.type === WebhookFilterTypes.FILE_PATH) !== -1;
-    }) !== -1;
-  }
 }
 
 function set2Array<T>(set: Set<T>): T[] {

packages/@aws-cdk/aws-codebuild/test/test.codebuild.ts

@@ -1801,19 +1801,17 @@ export = {
       test.done();
     },
 
-    'BitBucket sources do not support file path conditions'(test: Test) {
+    'BitBucket sources support file path conditions'(test: Test) {
       const stack = new cdk.Stack();
       const filterGroup = codebuild.FilterGroup.inEventOf(codebuild.EventAction.PUSH).andFilePathIs('.*');
 
-      test.throws(() => {
-        new codebuild.Project(stack, 'Project', {
-          source: codebuild.Source.bitBucket({
-            owner: 'owner',
-            repo: 'repo',
-            webhookFilters: [filterGroup],
-          }),
-        });
-      }, /BitBucket sources do not support file path conditions for webhook filters/);
+      new codebuild.Project(stack, 'Project', {
+        source: codebuild.Source.bitBucket({
+          owner: 'owner',
+          repo: 'repo',
+          webhookFilters: [filterGroup],
+        }),
+      });
 
       test.done();
     },