Add missing branch coverage in def add

docs/man/git-machete.1

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "GIT-MACHETE" "1" "Dec 07, 2023" "" "git-machete"
+.TH "GIT-MACHETE" "1" "Dec 08, 2023" "" "git-machete"
 .SH NAME
 git-machete \- git-machete 3.22.0
 .sp

git_machete/client.py

@@ -282,7 +282,8 @@ def add(self,
                                 # Let's skip interactive questions so as not to confuse new users.
                                 self.__roots = [current_branch]
                                 self.__managed_branches = [current_branch]
-                                if verbose:
+                                # This section of code is only ever executed in verbose mode, but let's leave the `if` for consistency
+                                if verbose:  # pragma: no branch
                                     print(fmt(f"Added branch {bold(current_branch)} as a new root"))
                                 opt_onto = current_branch
                     self.__git.create_branch(branch, out_of, switch_head=switch_head_if_new_branch)

tests/test_add.py

@@ -182,6 +182,38 @@ def test_add_new_branch_onto_master_for_fresh_start_with_yes(self) -> None:
             """)
         assert read_branch_layout_file() == "master\n  foo\n"
 
+    def test_add_new_branch_with_onto(self) -> None:
+        self.repo_sandbox\
+            .new_branch("master").commit()\
+            .new_branch("develop").commit()
+
+        body: str = \
+            """
+            master
+              develop
+            """
+        rewrite_branch_layout_file(body)
+
+        assert_success(
+            ['add', '--onto=master', '--yes', 'foo'],
+            """
+            A local branch foo does not exist. Creating out of master
+            Added branch foo onto master
+            """)
+        assert read_branch_layout_file() == "master\n  develop\n  foo\n"
+        assert self.repo_sandbox.get_commit_hash("master") == self.repo_sandbox.get_commit_hash("foo")
+
+    def test_add_new_branch_when_detached_head_for_fresh_start(self) -> None:
+        self.repo_sandbox.new_branch("master").commit("master commit.")\
+            .check_out(self.repo_sandbox.get_current_commit_hash())
+        assert_success(
+            ['add', '--yes', 'foo'],
+            """
+            A local branch foo does not exist. Creating out of the current HEAD
+            Added branch foo as a new root
+            """)
+        assert read_branch_layout_file() == "foo\n"
+
     def test_add_new_branch_onto_master_for_fresh_start_without_yes(self, mocker: MockerFixture) -> None:
         self.repo_sandbox.new_branch("master").commit("master commit.")