split projects 1/6: Config.split, push key, .wf-home discovery

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JEAjUkQRrCYX5MZhWxdtj2

1 files changed, 74 insertions, 0 deletions

diff --git a/tests/test_split.py b/tests/test_split.py
new file mode 100644
index 0000000..2026e33
--- /dev/null
+++ b/tests/test_split.py
@@ -0,0 +1,74 @@
+import subprocess
+import unittest
+from pathlib import Path
+
+from test_cli import TOML, Cli
+from test_claims import git
+from test_merge import IDENT
+
+
+class SplitCli(Cli):
+    """Private project (self.root, git, workflow.toml with code_root) + sibling code repo (self.code)."""
+    toml = TOML + 'code_root = "../code"\n'
+
+    def setUp(self):
+        super().setUp()
+        git(self.root, "init", "-q", "-b", "master")
+        (self.root / ".gitignore").write_text(".wf/\nout/\n")
+        git(self.root, "add", "-A")
+        git(self.root, "commit", "-qm", "init")
+        self.code = self.root.parent / "code"
+        self.code.mkdir()
+        git(self.code, "init", "-q", "-b", "master")
+        (self.code / ".gitignore").write_text(".worktrees/\n.wf-home\n")
+        (self.code / "lib.txt").write_text("a\n")
+        git(self.code, "add", "-A")
+        git(self.code, "commit", "-qm", "init")
+
+    def add_wt(self, lane="sonnet", id="t-three"):
+        """Code worktree on branch <lane>/<id> with .wf-home (what wf start makes)."""
+        wt = self.code / ".worktrees" / lane
+        git(self.code, "worktree", "add", "-q", str(wt), "-b", f"{lane}/{id}")
+        (wt / ".wf-home").write_text(f"{self.root}\n")
+        return wt
+
+    def log(self, repo, rev="master"):
+        return subprocess.run(["git", "log", "--format=%s", rev], cwd=repo, capture_output=True, text=True).stdout
+
+    def sha(self, repo, rev="master"):
+        return subprocess.run(["git", "rev-parse", "--short", rev], cwd=repo, capture_output=True, text=True).stdout.strip()
+
+
+class DiscoveryTest(SplitCli):
+    def test_wf_in_code_worktree_finds_private_project(self):
+        wt = self.add_wt()
+        code, out, err = self.wf("show", "t-three", project=False, cwd=wt)
+        self.assertEqual(code, 0, err)
+        self.assertIn("**t-three**", out)
+
+    def test_dangling_wf_home_is_config_error(self):
+        wt = self.add_wt()
+        (wt / ".wf-home").write_text(f"{self.root.parent / 'gone'}\n")
+        code, out, err = self.wf("show", "t-three", project=False, cwd=wt)
+        self.assertNotEqual(code, 0)
+        self.assertIn(".wf-home points to", err)
+        self.assertNotIn("Traceback", err)
+
+    def test_split_and_code_main(self):
+        import sys
+        sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
+        from wflib import config
+        cfg = config.load(self.root)
+        self.assertTrue(cfg.split)
+        self.assertEqual(config.code_main(cfg), self.code)
+        self.assertEqual(cfg.push, [])
+
+    def test_code_root_inside_same_repo_not_split(self):
+        import sys
+        sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
+        from wflib import config
+        (self.root / "workflow.toml").write_text(TOML + 'code_root = "."\npush = ["true"]\n')
+        cfg = config.load(self.root)
+        self.assertFalse(cfg.split)
+        self.assertIsNone(config.code_main(cfg))
+        self.assertEqual(cfg.push, ["true"])