Add basic git init functionality

Author: ianthomas23

src/subcommand/init_subcommand.cpp

@@ -1,19 +1,23 @@
+#include <filesystem>
 #include "init_subcommand.hpp"
-
-//#include "../wrapper/repository_wrapper.hpp"
+#include "../wrapper/repository_wrapper.hpp"
 
 InitSubcommand::InitSubcommand(CLI::App& app)
 {
     auto *sub = app.add_subcommand("init", "Explanation of init here");
 
-    sub->add_flag("--bare", bare, "--- bare ---");
+    sub->add_flag("--bare", bare, "info about bare arg");
+
+    // If directory not specified, uses cwd.
+    sub->add_option("directory", directory, "info about directory arg")
+        ->check(CLI::ExistingDirectory | CLI::NonexistentPath)
+        ->default_val(std::filesystem::current_path());
 
     sub->callback([this]() { this->run(); });
 }
 
 void InitSubcommand::run()
 {
-    std::cout << "RUN " << bare << std::endl;
-    //RepositoryWrapper repo;
-    //repo.init(bare);
+    RepositoryWrapper repo;
+    repo.init(directory, bare);
 }

src/subcommand/init_subcommand.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <string>
 #include "base_subcommand.hpp"
 
 class InitSubcommand : public BaseSubcommand
@@ -10,4 +11,5 @@ class InitSubcommand : public BaseSubcommand
 
 private:
     bool bare;
+    std::string directory;
 };

src/wrapper/repository_wrapper.cpp

@@ -15,15 +15,8 @@ RepositoryWrapper::~RepositoryWrapper()
     }
 }
 
-void RepositoryWrapper::init(bool bare)
+void RepositoryWrapper::init(const std::string& directory, bool bare)
 {
-    std::cout << "repo init - start" << std::endl;
-
-    // what if it is already initialised???
-
-    // convert error code to exception
-    std::string path = "repo";
-    throwIfError(git_repository_init(&_repo, path.c_str(), bare));
-
-    std::cout << "repo init - end " << std::endl;
+    // what if it is already initialised?  Throw exception or delete and recreate?
+    throwIfError(git_repository_init(&_repo, directory.c_str(), bare));
 }

src/wrapper/repository_wrapper.hpp

@@ -9,7 +9,7 @@ class RepositoryWrapper : public BaseWrapper
 
     virtual ~RepositoryWrapper();
 
-    void init(bool bare);
+    void init(const std::string& directory, bool bare);
 
 private:
     git_repository *_repo;

test/test_git.py

@@ -1,15 +1,19 @@
+import pytest
 import subprocess
 
-def test_version():
-    cmd = ['build/git2cpp', '-v']
+
+@pytest.mark.parametrize("arg", ['-v', '--version'])
+def test_version(arg):
+    cmd = ['build/git2cpp', arg]
     p = subprocess.run(cmd, capture_output=True)
     assert p.returncode == 0
-    assert len(p.stderr) == 0
+    assert p.stderr == b''
     assert p.stdout.startswith(b'git2cpp ')
 
-def test_unknown_option():
+
+def test_error_on_unknown_option():
     cmd = ['build/git2cpp', '--unknown']
     p = subprocess.run(cmd, capture_output=True)
-    #assert p.returncode == 1
-    assert len(p.stdout) == 0
+    assert p.returncode == 1
+    assert p.stdout == b''
     assert p.stderr.startswith(b"The following argument was not expected: --unknown")

test/test_init.py

@@ -0,0 +1,67 @@
+import os
+from pathlib import Path
+import pytest
+import subprocess
+
+
+# Fixture to run test in current tmp_path
+@pytest.fixture
+def run_in_tmp_path(tmp_path):
+    original_cwd = os.getcwd()
+    os.chdir(tmp_path)
+    yield
+    os.chdir(original_cwd)
+
+
+def test_init_in_directory(tmp_path):
+    # tmp_path exists and is empty.
+    assert list(tmp_path.iterdir()) == []
+
+    cmd = ['/Users/iant/github/git2cpp/build/git2cpp', 'init', '--bare', str(tmp_path)]
+    p = subprocess.run(cmd, capture_output=True)
+    assert p.returncode == 0
+    assert p.stdout == b''
+    assert p.stderr == b''
+
+    assert sorted(map(lambda path: path.name, tmp_path.iterdir())) == [
+        'HEAD', 'config', 'description', 'hooks', 'info', 'objects', 'refs'
+    ]
+
+    # TODO: check this is a valid git repo
+
+
+def test_init_in_cwd(tmp_path, run_in_tmp_path):
+    # tmp_path exists and is empty.
+    assert list(tmp_path.iterdir()) == []
+    assert Path.cwd() == tmp_path
+
+    cmd = ['/Users/iant/github/git2cpp/build/git2cpp', 'init', '--bare']
+    p = subprocess.run(cmd, capture_output=True)
+    assert p.returncode == 0
+    assert p.stdout == b''
+    assert p.stderr == b''
+
+    assert sorted(map(lambda path: path.name, tmp_path.iterdir())) == [
+        'HEAD', 'config', 'description', 'hooks', 'info', 'objects', 'refs'
+    ]
+
+    # TODO: check this is a valid git repo
+
+
+# TODO: Test without bare flag.
+
+
+def test_error_on_unknown_option():
+    cmd = ['build/git2cpp', 'init', '--unknown']
+    p = subprocess.run(cmd, capture_output=True)
+    assert p.returncode == 1
+    assert p.stdout == b''
+    assert p.stderr.startswith(b"The following argument was not expected: --unknown")
+
+
+def test_error_on_repeated_directory():
+    cmd = ['build/git2cpp', 'init', 'abc', 'def']
+    p = subprocess.run(cmd, capture_output=True)
+    assert p.returncode == 1
+    assert p.stdout == b''
+    assert p.stderr.startswith(b"The following argument was not expected: def")