diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b0257c9..1dc305a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -65,9 +65,9 @@ jobs:
             grep -v -e 'History\.md' -e 'AUTHORS' -e 'man/.*\.1' -e 'man/.*\.html' | \
             xargs poetry run codespell --ignore-words=../.github/.ignore_words
 
-  test:
+  test-pytest:
+    name: 'Test with Pytest'
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v4
         with:
@@ -85,13 +85,23 @@ jobs:
         run: |
           cd tests || exit
           poetry install --only test
-      - name: Setup Bats
-        id: setup-bats
-        uses: bats-core/bats-action@3.0.0
       - name: Test with Pytest
         run: |
           cd tests
           poetry run pytest
+
+  test-bats:
+    name: 'Test with Bats'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+           submodules: recursive
+      - name: Setup Bats
+        id: setup-bats
+        uses: bats-core/bats-action@3.0.0
+        with:
+          bats-version: 'v1.8.1'
       - name: Test with Bats
         env:
          BATS_LIB_PATH: ${{ steps.setup-bats.outputs.lib-path }}
diff --git a/.gitignore b/.gitignore
index a230a78..294ece4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 .venv/
 __pycache__/
+coverage/
diff --git a/tests/README.md b/tests/README.md
index 7c60a07..836021d 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -1,7 +1,28 @@
-# Test for git-extras
-The git-extras has its own testcases now, and the more is on the way! So let's introduce it.
+# Testing
 
-We choose python to help us to reach to other shore cause **python is life saver**.
+Originally, the tests were written in pytest. However, tests are in the process of being converted to Bats so coverage can be calculated.
+
+## Bats Testing
+
+We require a somewhat recent version of Bats. Version v1.8.1 is tested in CI. Once it is installed, the tests can be executed like so:
+
+```sh
+bats ./tests
+```
+
+We highly recommend adding tests for new features and fixes.
+
+### Code Coverage
+
+Coverage can be calculated with [bashcov](https://github.com/infertux/bashcov) like so:
+
+```sh
+bashcov -- bats ./tests
+```
+
+By default, the report will be generated in `./coverage/index.html`.
+
+## Python Testing
 
 The test part depends on:
 
@@ -12,7 +33,8 @@ The test part depends on:
 
 So the versions are higher than above is recommended.
 
-# How to run the tests
+### How to run the tests
+
 1. Install `poetry`
 2. Install the dependencies via `poetry install`
 3. Run `poetry run pytest`
@@ -27,7 +49,8 @@ It is done or go without `poetry`,
 
 The second way maybe blocked the some missing dependencies at someday, so the first one is recommended.
 
-# What and how to create a unit test
+### What and how to create a unit test
+
 One command has a unit test, because one `git-*` command is just do one thing, so we can eat a piece of `git-*` command in one time.
 
 For example,
@@ -39,7 +62,8 @@ For example,
     * `named_temp_repo` is just same as `temp_repo` except the custom directory renaming.
 4. Loop the third step until the 100% coverage of the function of the `git-alias`
 
-# References
+### References
+
 * [poetry](https://github.com/python-poetry/poetry)
 * [pytest](https://github.com/pytest-dev/pytest/)
 * [git python](https://github.com/gitpython-developers/GitPython)
diff --git a/tests/bin/open b/tests/bin/open
new file mode 100755
index 0000000..2be3eaf
--- /dev/null
+++ b/tests/bin/open
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+printf '%s\n' "open $*"
diff --git a/tests/bin/powershell.exe b/tests/bin/powershell.exe
new file mode 100755
index 0000000..aee36a1
--- /dev/null
+++ b/tests/bin/powershell.exe
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+printf '%s\n' "powershell.exe $*"
diff --git a/tests/bin/start b/tests/bin/start
new file mode 100755
index 0000000..89eeebd
--- /dev/null
+++ b/tests/bin/start
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+printf '%s\n' "start $*"
diff --git a/tests/bin/xdg-open b/tests/bin/xdg-open
new file mode 100755
index 0000000..951b999
--- /dev/null
+++ b/tests/bin/xdg-open
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+printf '%s\n' "xdg-open $*"
diff --git a/tests/git-abort.bats b/tests/git-abort.bats
index 94f9f8d..73e8302 100644
--- a/tests/git-abort.bats
+++ b/tests/git-abort.bats
@@ -9,7 +9,7 @@ setup_file() {
 setup() {
 	test_util.cd_test
 
-	git init
+	test_util.git_init
 	git commit --allow-empty -m "Initial commit"
 	git branch A
 	git branch B
@@ -24,7 +24,7 @@ setup() {
 	git status
 }
 
-@test "cherry pick" {
+@test "works with cherry pick" {
 	run git cherry-pick A
 	assert_failure
 
@@ -41,7 +41,7 @@ setup() {
 	assert_success
 }
 
-@test "merge" {
+@test "works with merge" {
 	run git merge A
 	assert_failure
 
@@ -58,7 +58,7 @@ setup() {
 	assert_success
 }
 
-@test "rebase" {
+@test "works with rebase" {
 	run git rebase A
 	assert_failure
 
@@ -75,7 +75,7 @@ setup() {
 	assert_success
 }
 
-@test "revert" {
+@test "works with revert" {
 	run git revert A
 	assert_failure
 
diff --git a/tests/git-alias.bats b/tests/git-alias.bats
index fa210a7..bb15410 100644
--- a/tests/git-alias.bats
+++ b/tests/git-alias.bats
@@ -9,7 +9,7 @@ setup_file() {
 setup() {
 	test_util.cd_test
 
-	git init
+	test_util.git_init
 	git config --global alias.globalalias status
 	git config --global alias.x status
 	git config --local alias.localalias status
diff --git a/tests/git-archive-file.bats b/tests/git-archive-file.bats
index 76cffd6..b7f1849 100644
--- a/tests/git-archive-file.bats
+++ b/tests/git-archive-file.bats
@@ -9,7 +9,7 @@ setup_file() {
 setup() {
 	test_util.cd_test
 
-	git init
+	test_util.git_init
 	printf '%s\n' 'data' > tmpfile
 	git add .
 	git commit -m 'test: add data'
diff --git a/tests/git-authors.bats b/tests/git-authors.bats
index 203a882..2fafffa 100644
--- a/tests/git-authors.bats
+++ b/tests/git-authors.bats
@@ -10,17 +10,22 @@ setup_file() {
 setup() {
 	test_util.cd_test
 
-	git init
-	GIT_CONFIG_VALUE_0='test@example.com'
-	GIT_CONFIG_VALUE_1='test'
+	test_util.git_init
+
+	git config user.name 'test'
+	git config user.email 'test@example.com'
 	printf '%s\n' 'A' > tmpfile
 	git add .
 	git commit -m 'test: add data A'
-	GIT_CONFIG_VALUE_0='testagain@example.com'
-	GIT_CONFIG_VALUE_1='testagain'
+
+	git config user.name 'testagain'
+	git config user.email 'testagain@example.com'
 	printf '%s\n' 'B' > tmpfile
 	git add .
 	git commit -m 'test: add data B'
+
+	# git config unset user.name
+	# git config unset user.email
 }
 
 @test "output authors has email without any parameter" {
diff --git a/tests/git-browse-ci.bats b/tests/git-browse-ci.bats
new file mode 100644
index 0000000..fee89fc
--- /dev/null
+++ b/tests/git-browse-ci.bats
@@ -0,0 +1,117 @@
+# shellcheck shell=bash
+
+source "$BATS_TEST_DIRNAME/test_util.sh"
+
+setup_file() {
+	test_util.setup_file
+
+	PATH="$BATS_TEST_DIRNAME/bin:$PATH"
+}
+
+setup() {
+	test_util.cd_test
+
+	test_util.git_init
+}
+
+get_ci_uri() {
+	local mode=$1
+
+	if [ "$mode" = 'github' ]; then
+		REPLY="https://github.com/tj/git-extras/actions"
+	elif [ "$mode" = 'gitlab' ]; then
+		REPLY="https://gitlab.com/tj/git-extras/-/pipelines"
+	elif [ "$mode" = 'bitbucket' ]; then
+		REPLY="https://bitbucket.org/tj/git-extras/addon/pipelines/home"
+	fi
+}
+
+@test "works with mac and github" {
+	get_ci_uri 'github'
+	local expected_url=$REPLY
+
+	git remote add upstream https://github.com/tj/git-extras
+	OSTYPE=darwin run git browse-ci upstream
+	assert_output "open $expected_url"
+	assert_success
+}
+
+@test "works with mac and gitlab" {
+	get_ci_uri 'gitlab'
+	local expected_url=$REPLY
+
+	git remote add upstream https://gitlab.com/tj/git-extras
+	OSTYPE=darwin run git browse-ci upstream
+	assert_output "open $expected_url"
+	assert_success
+}
+
+@test "works with mac and bitbucket" {
+	get_ci_uri 'bitbucket'
+	local expected_url=$REPLY
+
+	git remote add upstream https://bitbucket.org/tj/git-extras
+	OSTYPE=darwin run git browse-ci upstream
+	assert_output "open $expected_url"
+	assert_success
+}
+
+@test "works with windows and github" {
+	get_ci_uri 'github'
+	local expected_url=$REPLY
+
+	git remote add upstream https://github.com/tj/git-extras
+	OSTYPE=msys run git browse-ci upstream
+	assert_output "start $expected_url"
+	assert_success
+}
+
+@test "works with windows and gitlab" {
+	get_ci_uri 'gitlab'
+	local expected_url=$REPLY
+
+	git remote add upstream https://gitlab.com/tj/git-extras
+	OSTYPE=msys run git browse-ci upstream
+	assert_output "start $expected_url"
+	assert_success
+}
+
+@test "works with windows and bitbucket" {
+	get_ci_uri 'bitbucket'
+	local expected_url=$REPLY
+
+	git remote add upstream https://bitbucket.org/tj/git-extras
+	OSTYPE=msys run git browse-ci upstream
+	assert_output "start $expected_url"
+	assert_success
+}
+
+@test "works with linux and github" {
+	get_ci_uri 'github'
+	local expected_url=$REPLY
+
+	git remote add upstream https://github.com/tj/git-extras
+	OSTYPE=linux-gnu run git browse-ci upstream
+	assert_output "xdg-open $expected_url"
+	assert_success
+}
+
+@test "works with linux and gitlab" {
+	get_ci_uri 'gitlab'
+	local expected_url=$REPLY
+
+	git remote add upstream https://gitlab.com/tj/git-extras
+	OSTYPE=linux-gnu run git browse-ci upstream
+	assert_output "xdg-open $expected_url"
+	assert_success
+}
+
+@test "works with linux and bitbucket" {
+	get_ci_uri 'bitbucket'
+	local expected_url=$REPLY
+
+	git remote add upstream https://bitbucket.org/tj/git-extras
+	OSTYPE=linux-gnu run git browse-ci upstream
+	assert_output "xdg-open $expected_url"
+	assert_success
+}
diff --git a/tests/git-browse.bats b/tests/git-browse.bats
new file mode 100644
index 0000000..190ef00
--- /dev/null
+++ b/tests/git-browse.bats
@@ -0,0 +1,123 @@
+# shellcheck shell=bash
+
+source "$BATS_TEST_DIRNAME/test_util.sh"
+
+setup_file() {
+	test_util.setup_file
+
+	PATH="$BATS_TEST_DIRNAME/bin:$PATH"
+}
+
+setup() {
+	test_util.cd_test
+
+	test_util.git_init
+	touch ./browse_this
+	git add ./browse_this
+	git commit -m 'Add test file'
+}
+
+get_file_uri() {
+	local mode=$1
+	local filename=$2
+
+	local commit_hash=
+	commit_hash=$(git rev-parse HEAD)
+	if [ "$mode" = 'github' ]; then
+		REPLY="https://github.com/tj/git-extras/blob/$commit_hash/${filename}"
+	elif [ "$mode" = 'gitlab' ]; then
+		REPLY="https://gitlab.com/tj/git-extras/-/blob/${commit_hash}/${filename}"
+	elif [ "$mode" = 'bitbucket' ]; then
+		REPLY="https://bitbucket.org/tj/git-extras/src/${commit_hash}/${filename}"
+	fi
+}
+
+@test "works with mac and github" {
+	get_file_uri github ./browse_this
+	local expected_url=$REPLY
+
+	git remote add upstream https://github.com/tj/git-extras
+	OSTYPE=darwin run git browse upstream ./browse_this
+	assert_output "open $expected_url"
+	assert_success
+}
+
+@test "works with mac and gitlab" {
+	get_file_uri gitlab ./browse_this
+	local expected_url=$REPLY
+
+	git remote add upstream https://gitlab.com/tj/git-extras
+	OSTYPE=darwin run git browse upstream ./browse_this
+	assert_output "open $expected_url"
+	assert_success
+}
+
+@test "works with mac and bitbucket" {
+	get_file_uri bitbucket ./browse_this
+	local expected_url=$REPLY
+
+	git remote add upstream https://bitbucket.org/tj/git-extras
+	OSTYPE=darwin run git browse upstream ./browse_this
+	assert_output "open $expected_url"
+	assert_success
+}
+
+@test "works with windows and github" {
+	get_file_uri github ./browse_this
+	local expected_url=$REPLY
+
+	git remote add upstream https://github.com/tj/git-extras
+	OSTYPE=msys run git browse upstream ./browse_this
+	assert_output "start $expected_url"
+	assert_success
+}
+
+@test "works with windows and gitlab" {
+	get_file_uri gitlab ./browse_this
+	local expected_url=$REPLY
+
+	git remote add upstream https://gitlab.com/tj/git-extras
+	OSTYPE=msys run git browse upstream ./browse_this
+	assert_output "start $expected_url"
+	assert_success
+}
+
+@test "works with windows and bitbucket" {
+	get_file_uri bitbucket ./browse_this
+	local expected_url=$REPLY
+
+	git remote add upstream https://bitbucket.org/tj/git-extras
+	OSTYPE=msys run git browse upstream ./browse_this
+	assert_output "start $expected_url"
+	assert_success
+}
+
+@test "works with linux and github" {
+	get_file_uri github ./browse_this
+	local expected_url=$REPLY
+
+	git remote add upstream https://github.com/tj/git-extras
+	OSTYPE=linux-gnu run git browse upstream ./browse_this
+	assert_output "xdg-open $expected_url"
+	assert_success
+}
+
+@test "works with linux and gitlab" {
+	get_file_uri gitlab ./browse_this
+	local expected_url=$REPLY
+
+	git remote add upstream https://gitlab.com/tj/git-extras
+	OSTYPE=linux-gnu run git browse upstream ./browse_this
+	assert_output "xdg-open $expected_url"
+	assert_success
+}
+
+@test "works with linux and bitbucket" {
+	get_file_uri bitbucket ./browse_this
+	local expected_url=$REPLY
+
+	git remote add upstream https://bitbucket.org/tj/git-extras
+	OSTYPE=linux-gnu run git browse upstream ./browse_this
+	assert_output "xdg-open $expected_url"
+	assert_success
+}
diff --git a/tests/git-continue.bats b/tests/git-continue.bats
new file mode 100755
index 0000000..da916a8
--- /dev/null
+++ b/tests/git-continue.bats
@@ -0,0 +1,92 @@
+#!/usr/bin/env bats
+
+source "$BATS_TEST_DIRNAME/test_util.sh"
+
+setup_file() {
+	test_util.setup_file
+}
+
+setup() {
+	test_util.cd_test
+
+	test_util.git_init
+	git commit -m 'Initial commit' --allow-empty
+
+	git switch -c A main
+	printf '%s\n' 'a' >> ./tmp_file
+	git add ./tmp_file
+	git commit -m 'A'
+
+	git switch -c B main
+	printf '%s\n' 'b' >> ./tmp_file
+	git add ./tmp_file
+	git commit -m 'B'
+}
+
+@test "works with cherry pick" {
+	run git cherry-pick A
+	assert_failure
+
+	run git status
+	assert_line -p 'Unmerged paths:'
+	assert_success
+
+	git add .
+	GIT_EDITOR=cat run git continue
+	assert_success
+
+	run git status
+	assert_line -p 'nothing to commit, working tree clean'
+	assert_success
+}
+
+@test "works with merge" {
+	run git merge A
+	assert_failure
+
+	run git status
+	assert_line -p 'Unmerged paths:'
+	assert_success
+
+	git add .
+	GIT_EDITOR=cat run git continue
+	assert_success
+
+	run git status
+	assert_line -p 'nothing to commit, working tree clean'
+	assert_success
+}
+
+@test "works with rebase" {
+	run git rebase A
+	assert_failure
+
+	run git status
+	assert_line -p 'Unmerged paths:'
+	assert_success
+
+	git add .
+	GIT_EDITOR=cat run git continue
+	assert_success
+
+	run git status
+	assert_line -p 'nothing to commit, working tree clean'
+	assert_success
+}
+
+@test "works with revert" {
+	run git revert A
+	assert_failure
+
+	run git status
+	assert_line -p 'Unmerged paths:'
+	assert_success
+
+	git add .
+	GIT_EDITOR=cat run git continue
+	assert_failure # TODO: Git seems to do nothing and error out?
+
+	run git status
+	assert_line -p 'nothing to commit, working tree clean'
+	assert_success
+}
diff --git a/tests/test_util.sh b/tests/test_util.sh
index 73ca915..4c85773 100644
--- a/tests/test_util.sh
+++ b/tests/test_util.sh
@@ -7,14 +7,6 @@ test_util.setup_file() {
 
 	export GIT_CONFIG_NOSYSTEM=1
 	export GIT_CONFIG_GLOBAL="$PWD/git_config"
-	export GIT_CONFIG_COUNT=3
-	export GIT_CONFIG_KEY_0="user.email"
-	export GIT_CONFIG_VALUE_0="name@example.com"
-	export GIT_CONFIG_KEY_1="user.name"
-	export GIT_CONFIG_VALUE_1="Name"
-	# This removes default warning about default "master" branch on some Git versions.
-	export GIT_CONFIG_KEY_2="init.defaultBranch"
-	export GIT_CONFIG_VALUE_2="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.
@@ -24,3 +16,9 @@ test_util.setup_file() {
 test_util.cd_test() {
 	cd "$BATS_TEST_TMPDIR"
 }
+
+test_util.git_init() {
+	git init --initial-branch main
+	git config user.name  'Name'
+	git config user.email 'name@example.com'
+}