feat: can choose initial branch and default initial branch tested is …

…`main`

behave4git/git_steps.py

@@ -20,9 +20,25 @@ def step_an_empty_git_repo(context):
     command_util.ensure_context_attribute_exists(context, "repo", repo)
 
 
+@given('an empty git repo with "{initial_branch}" as initial branch')
+def step_an_empty_git_repo_with_initial_branch(context, initial_branch):
+    step_a_new_working_directory(context)
+    repo = Repo.init(context.workdir, initial_branch=initial_branch)
+    command_util.ensure_context_attribute_exists(context, "repo", repo)
+
+
 @given("a starting git repo")
 def step_a_starting_git_repo(context):
-    step_an_empty_git_repo(context)
+    step_an_empty_git_repo_with_initial_branch(context, "main")
+    context.surrogate_text = "foo bar"
+    step_a_file_named_filename_with(context, "initial_commit_file")
+    step_add_file_to_index(context, "initial_commit_file")
+    step_commit_index_with_message(context, "chore: initial commit")
+
+
+@given('a starting git repo with "{initial_branch}" as initial branch')
+def step_a_starting_git_repo_with_initial_branch(context, initial_branch):
+    step_an_empty_git_repo_with_initial_branch(context, initial_branch)
     context.surrogate_text = "foo bar"
     step_a_file_named_filename_with(context, "initial_commit_file")
     step_add_file_to_index(context, "initial_commit_file")

features/branch_steps.feature

@@ -4,7 +4,7 @@ Feature: Git steps reused throughout the features
         Given a starting git repo
         And I create the branch "my_branch"
         Then the branch "my_branch" should exist
-        And the branch "my_branch" should be at the same level as branch "master"
+        And the branch "my_branch" should be at the same level as branch "main"
 
     Scenario: Switch to a branch
         Given a starting git repo
@@ -22,5 +22,5 @@ Feature: Git steps reused throughout the features
             """
         And I add the file "branch_file" to the git index
         And I commit the git index with message "chore: branch commit"
-        Then there should be 1 commit between head and the branch "master"
+        Then there should be 1 commit between head and the branch "main"
         Then there should be 2 commit in "my_branch"

features/initialise_repo_steps.feature

@@ -0,0 +1,9 @@
+Feature: Git initialisation steps
+
+    Scenario: Initialise repo with initial branch named "main"
+        Given a starting git repo with "main" as initial branch
+        Then the branch "main" should exist
+
+    Scenario: Initialise repo with initial branch named "master"
+        Given a starting git repo with "master" as initial branch
+        Then the branch "master" should exist