diff --git a/plugins/scaffolder-node/src/actions/util.test.ts b/plugins/scaffolder-node/src/actions/util.test.ts
new file mode 100644
index 0000000000..71e173c585
--- /dev/null
+++ b/plugins/scaffolder-node/src/actions/util.test.ts
@@ -0,0 +1,222 @@
+/*
+ * Copyright 2025 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ScmIntegrationRegistry } from '@backstage/integration';
+import { parseRepoUrl } from './util';
+
+const queryString = (
+  params: Partial<
+    Record<'owner' | 'organization' | 'workspace' | 'project' | 'repo', string>
+  > = {},
+): string => {
+  const pEntries = Object.entries(params);
+  if (pEntries.length) {
+    return `?${pEntries
+      .map(([k, v]) => `${k}=${encodeURIComponent(v)}`)
+      .join('&')}`;
+  }
+  return '';
+};
+
+describe('scaffolder action utils', () => {
+  describe('parseRepoUrl', () => {
+    const byHost = jest.fn();
+    const integrations = {
+      byHost,
+    } as unknown as ScmIntegrationRegistry;
+
+    describe('rejects url when', () => {
+      it('empty', () =>
+        expect(() => parseRepoUrl('', integrations)).toThrow(
+          /Invalid repo URL passed/,
+        ));
+      it('blank', () =>
+        expect(() => parseRepoUrl(' ', integrations)).toThrow(
+          /Invalid repo URL passed/,
+        ));
+    });
+    it('requires that host match an integration type', () => {
+      byHost.mockClear();
+      expect(() => parseRepoUrl('foo', integrations)).toThrow(
+        /No matching integration configuration for host/,
+      );
+    });
+    describe('bitbucket', () => {
+      beforeEach(() => byHost.mockReturnValue({ type: 'bitbucket' }));
+      describe('cloud', () => {
+        const [host, workspace, project, repo] = [
+          'www.bitbucket.org',
+          'foo',
+          'bar',
+          'baz',
+        ];
+        it('requires workspace', () =>
+          expect(() =>
+            parseRepoUrl(
+              `${host}${queryString({ project, repo })}`,
+              integrations,
+            ),
+          ).toThrow(/missing workspace/));
+        it('requires project', () =>
+          expect(() =>
+            parseRepoUrl(
+              `${host}${queryString({ workspace, repo })}`,
+              integrations,
+            ),
+          ).toThrow(/missing project/));
+        it('requires repo', () =>
+          expect(() =>
+            parseRepoUrl(
+              `${host}${queryString({ workspace, project })}`,
+              integrations,
+            ),
+          ).toThrow(/missing repo/));
+        it('happy path', () =>
+          expect(
+            parseRepoUrl(
+              `${host}${queryString({ workspace, project, repo })}`,
+              integrations,
+            ),
+          ).toMatchObject({
+            host,
+            workspace,
+            project,
+            repo,
+          }));
+      });
+      describe('other', () => {
+        const [host, project, repo] = ['bitbucket.other', 'foo', 'bar'];
+        it('requires project', () =>
+          expect(() =>
+            parseRepoUrl(`${host}${queryString({ repo })}`, integrations),
+          ).toThrow(/missing project/));
+        it('requires repo', () =>
+          expect(() =>
+            parseRepoUrl(`${host}${queryString({ project })}`, integrations),
+          ).toThrow(/missing repo/));
+        it('happy path', () =>
+          expect(
+            parseRepoUrl(
+              `${host}${queryString({ project, repo })}`,
+              integrations,
+            ),
+          ).toMatchObject({
+            host,
+            project,
+            repo,
+          }));
+      });
+    });
+    describe('azure', () => {
+      beforeEach(() => byHost.mockReturnValue({ type: 'azure' }));
+      const [host, project, repo] = ['az.ure', 'foo', 'bar'];
+      it('requires project', () =>
+        expect(() =>
+          parseRepoUrl(`${host}${queryString({ repo })}`, integrations),
+        ).toThrow(/missing project/));
+      it('requires repo', () =>
+        expect(() =>
+          parseRepoUrl(`${host}${queryString({ project })}`, integrations),
+        ).toThrow(/missing repo/));
+      it('happy path', () =>
+        expect(
+          parseRepoUrl(
+            `${host}${queryString({ project, repo })}`,
+            integrations,
+          ),
+        ).toMatchObject({
+          host,
+          project,
+          repo,
+        }));
+    });
+    describe('gitlab', () => {
+      beforeEach(() => byHost.mockReturnValue({ type: 'gitlab' }));
+      const [host, owner, repo, project] = ['gitl.ab', 'foo', 'bar', '123456'];
+      it('requires owner', () =>
+        expect(() =>
+          parseRepoUrl(`${host}${queryString({ repo })}`, integrations),
+        ).toThrow(/missing owner/));
+      it('requires repo', () =>
+        expect(() =>
+          parseRepoUrl(`${host}${queryString({ owner })}`, integrations),
+        ).toThrow(/missing repo/));
+      it('unless project specified', () =>
+        expect(
+          parseRepoUrl(`${host}${queryString({ project })}`, integrations),
+        ).toMatchObject({ host, project }));
+      it('happy path', () =>
+        expect(
+          parseRepoUrl(`${host}${queryString({ owner, repo })}`, integrations),
+        ).toMatchObject({
+          host,
+          owner,
+          repo,
+        }));
+    });
+    describe('gitea', () => {
+      beforeEach(() => byHost.mockReturnValue({ type: 'gitea' }));
+      const [host, repo] = ['git.ea', 'foo'];
+      it('requires repo', () =>
+        expect(() => parseRepoUrl(host, integrations)).toThrow(/missing repo/));
+      it('happy path', () =>
+        expect(
+          parseRepoUrl(`${host}${queryString({ repo })}`, integrations),
+        ).toMatchObject({ host, repo }));
+    });
+    describe('gerrit', () => {
+      beforeEach(() => byHost.mockReturnValue({ type: 'gerrit' }));
+      const [host, repo] = ['gerr.it', 'foo'];
+      it('requires repo', () =>
+        expect(() => parseRepoUrl(host, integrations)).toThrow(/missing repo/));
+      it('happy path', () =>
+        expect(
+          parseRepoUrl(`${host}${queryString({ repo })}`, integrations),
+        ).toMatchObject({
+          host,
+          repo,
+        }));
+    });
+    describe('generic type', () => {
+      beforeEach(() => byHost.mockReturnValue({ type: 'generic' }));
+      const [host, owner, repo] = ['oth.er', 'foo', 'bar'];
+      it('requires owner', () =>
+        expect(() =>
+          parseRepoUrl(`${host}${queryString({ repo })}`, integrations),
+        ).toThrow(/missing owner/));
+      it('requires repo', () =>
+        expect(() =>
+          parseRepoUrl(`${host}${queryString({ owner })}`, integrations),
+        ).toThrow(/missing repo/));
+      it('happy path', () =>
+        expect(
+          parseRepoUrl(`${host}${queryString({ owner, repo })}`, integrations),
+        ).toMatchObject({
+          host,
+          owner,
+          repo,
+        }));
+    });
+    describe('facilitates naive URL construction', () => {
+      beforeEach(() => byHost.mockReturnValue({ type: 'irrelevant' }));
+      it('decodes encoded params', () => {
+        const [host, owner, repo] = ['with_the_most', 'foo/bar/baz', 'blah'];
+        expect(
+          parseRepoUrl(`${host}${queryString({ owner, repo })}`, integrations),
+        ).toMatchObject({ host, owner, repo });
+      });
+    });
+  });
+});