Implement half of tests in Bats

.editorconfig

@@ -20,3 +20,11 @@ trim_trailing_whitespace = false
 
 [*.py]
 indent_size = 4
+
+[*.bats]
+indent_style = tab
+indent_size = 4
+
+[tests/*.sh]
+indent_style = tab
+indent_size = 4

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "vendor/bats-all"]
+	path = vendor/bats-all
+	url = https://github.com/hyperupcall/bats-all

tests/git-abort.bats

@@ -0,0 +1,93 @@
+# shellcheck shell=bash
+
+source "$BATS_TEST_DIRNAME/test_util.sh"
+
+setup_file() {
+	test_util.setup_file
+}
+
+setup() {
+	test_util.cd_test
+
+	git init
+	git commit --allow-empty -m "Initial commit"
+	git branch A
+	git branch B
+	git checkout A
+	printf '%s\n' 'a' > tmpfile
+	git add .
+	git commit -m A
+	git checkout B
+	printf '%s\n' 'b' > tmpfile
+	git add .
+	git commit -m B
+	git status
+}
+
+@test "cherry pick" {
+	run git cherry-pick A
+	assert_failure
+
+	run git status
+	assert_line -p 'You are currently cherry-picking commit'
+	assert_line -p 'Unmerged paths:'
+	assert_success
+
+	run git abort
+	assert_success
+
+	run git status
+	assert_line -p 'nothing to commit, working tree clean'
+	assert_success
+}
+
+@test "merge" {
+	run git merge A
+	assert_failure
+
+	run git status
+	assert_line -p 'You have unmerged paths'
+	assert_line -p 'Unmerged paths:'
+	assert_success
+
+	run git abort
+	assert_success
+
+	run git status
+	assert_line -p 'nothing to commit, working tree clean'
+	assert_success
+}
+
+@test "rebase" {
+	run git rebase A
+	assert_failure
+
+	run git status
+	assert_line -p 'You are currently rebasing branch'
+	assert_line -p 'Unmerged paths:'
+	assert_success
+
+	run git abort
+	assert_success
+
+	run git status
+	assert_line -p 'nothing to commit, working tree clean'
+	assert_success
+}
+
+@test "revert" {
+	run git revert A
+	assert_failure
+
+	run git status
+	assert_line -p 'You are currently reverting commit'
+	assert_line -p 'Unmerged paths:'
+	assert_success
+
+	run git abort
+	assert_success
+
+	run git status
+	assert_line -p 'nothing to commit, working tree clean'
+	assert_success
+}

tests/git-alias.bats

@@ -0,0 +1,106 @@
+# shellcheck shell=bash
+
+source "$BATS_TEST_DIRNAME/test_util.sh"
+
+setup_file() {
+	test_util.setup_file
+}
+
+setup() {
+	test_util.cd_test
+
+	git init
+	git config --global alias.globalalias status
+	git config --global alias.x status
+	git config --local alias.localalias status
+	git config --local alias.y status
+}
+
+@test "list all works" {
+	run git alias
+	assert_output - <<-'EOF'
+	globalalias = status
+	localalias = status
+	x = status
+	y = status
+EOF
+	assert_success
+}
+
+@test "list all globally works" {
+	run git alias --global
+	assert_output - <<-'EOF'
+	globalalias = status
+	x = status
+EOF
+	assert_success
+}
+
+@test "list all locally works" {
+	run git alias --local
+	assert_output - <<-'EOF'
+	localalias = status
+	y = status
+EOF
+	assert_success
+}
+
+@test "search globally works" {
+	run git alias --global global
+	assert_output - <<-'EOF'
+	globalalias = status
+EOF
+	assert_success
+
+	run git alias --global local
+	assert_output ''
+	assert_failure
+}
+
+@test "search locally works" {
+	run git alias --local local
+	assert_output - <<-'EOF'
+	localalias = status
+EOF
+	assert_success
+
+	run git alias --local global
+	assert_output ''
+	assert_failure
+}
+
+@test "get alias globally and defaultly" {
+	run git alias globalalias
+	assert_output - <<-'EOF'
+	globalalias = status
+EOF
+	assert_success
+}
+
+@test "set alias globally and defaultly" {
+	git alias globalalias diff
+	run git alias diff
+	assert_output - <<-'EOF'
+	globalalias = diff
+EOF
+	assert_success
+}
+
+@test "get alias locally" {
+	run git alias --local localalias
+	assert_output - <<-'EOF'
+	localalias = status
+EOF
+	assert_success
+}
+
+@test "set alias locally" {
+	git alias --local localalias diff
+	run git alias
+	assert_output - <<-'EOF'
+	globalalias = status
+	localalias = diff
+	x = status
+	y = status
+EOF
+}

tests/git-archive-file.bats

@@ -0,0 +1,66 @@
+# shellcheck shell=bash
+
+source "$BATS_TEST_DIRNAME/test_util.sh"
+
+setup_file() {
+	test_util.setup_file
+}
+
+setup() {
+	test_util.cd_test
+
+	git init
+	printf '%s\n' 'data' > tmpfile
+	git add .
+	git commit -m 'test: add data'
+	git tag 0.1.0 -m 'bump: 0.1.0'
+}
+
+@test "archive file on tags branch" {
+	git checkout -b tags0.1.0
+	run git archive-file
+	assert_success
+
+	local describe_output=
+	describe_output=$(git describe)
+	assert_file_exists "${PWD##*/}.$describe_output.zip"
+}
+
+@test "archive file on any not tags branch without default branch" {
+	git checkout -b not-tags-branch
+	run git archive-file
+	assert_success
+
+	local describe_output=
+	describe_output=$(git describe --always --long)
+	assert_file_exists "${PWD##*/}.$describe_output.not-tags-branch.zip"
+}
+
+@test "archive file on any not tags branch with default branch" {
+	skip "Not working as expected"
+
+	run git archive-file
+	assert_success
+
+	local describe_output=
+	describe_output=$(git describe --always --long)
+	assert_file_exists "${PWD##*/}.$describe_output.zip"
+}
+
+@test "archive file on branch name has slash" {
+	git checkout -b feature/slash
+	run git archive-file
+	assert_success
+
+	local describe_output=
+	describe_output=$(git describe --always --long)
+	assert_file_exists "${PWD##*/}.$describe_output.feature-slash.zip"
+}
+
+@test "archive file on dirname has backslash" {
+	skip
+}
+
+@test "archive file on tag name has slash" {
+	skip
+}

tests/git-authors.bats

@@ -0,0 +1,52 @@
+# shellcheck shell=bash
+
+source "$BATS_TEST_DIRNAME/test_util.sh"
+
+
+setup_file() {
+	test_util.setup_file
+}
+
+setup() {
+	test_util.cd_test
+
+	git init
+	git config --local user.name test
+	git config --local user.email test@example.com
+	printf '%s\n' 'A' > tmpfile
+	git add .
+	git commit -m 'test: add data A'
+	git config --local user.name testagain
+	git config --local user.email testagain@example.com
+	printf '%s\n' 'B' > tmpfile
+	git add .
+	git commit -m 'test: add data B'
+}
+
+@test "output authors has email without any parameter" {
+	run git authors
+	assert_success
+
+	local content=$(<AUTHORS)
+	assert_equal "$content" $'test <test@example.com>\ntestagain <testagain@example.com>'
+}
+
+@test "list authors has email defaultly" {
+	run git authors --list
+	assert_output $'test <test@example.com>\ntestagain <testagain@example.com>'
+	assert_success
+
+	run git authors -l
+	assert_output $'test <test@example.com>\ntestagain <testagain@example.com>'
+	assert_success
+}
+
+@test "list authors has no email" {
+	run git authors --list --no-email
+	assert_output $'test\ntestagain'
+	assert_success
+
+	run git authors -l --no-email
+	assert_output $'test\ntestagain'
+	assert_success
+}

tests/test_util.sh

@@ -0,0 +1,20 @@
+# shellcheck shell=bash
+
+source "$BATS_TEST_DIRNAME/../vendor/bats-all/load.bash"
+
+test_util.setup_file() {
+	cd "$BATS_FILE_TMPDIR"
+
+	export GIT_CONFIG_NOSYSTEM=1
+	export GIT_CONFIG_GLOBAL="$PWD/git_config"
+	# This removes default warning about default "master" branch on some Git versions.
+	git config --global init.defaultBranch main
+
+	# Append to path so that we can access all commands included from git-extras
+	# TODO: This currently breaks with commands that are included in "not_needed_git_repo" etc.
+	PATH="$BATS_TEST_DIRNAME/../bin:$PATH"
+}
+
+test_util.cd_test() {
+	cd "$BATS_TEST_TMPDIR"
+}