chore: add more integrity tests

testdata/add.txt

@@ -1,4 +1,11 @@
 exec git init
 exec lefthook add pre-commit
+! stderr .
 exists .git/hooks/pre-commit
+! exists .lefthook/pre-commit
+
+exec lefthook add pre-push --dirs
 ! stderr .
+exists .git/hooks/pre-push
+exists .lefthook/pre-push
+exists .lefthook-local/pre-push

testdata/run_json.txt

@@ -0,0 +1,23 @@
+exec git init
+exec git config user.email "you@example.com"
+exec git config user.name "Your Name"
+exec git add -A
+exec lefthook install
+exec git commit -m 'test'
+stderr '\s*Hi there from Lefthook\s*'
+
+-- lefthook.json --
+{
+  "skip_output": [
+    "meta",
+    "summary",
+    "execution_info"
+  ],
+  "pre-commit": {
+    "commands": {
+      "echo": {
+        "run": "echo Hi there from Lefthook"
+      }
+    }
+  }
+}

testdata/run_toml.txt

@@ -0,0 +1,18 @@
+exec git init
+exec git config user.email "you@example.com"
+exec git config user.name "Your Name"
+exec git add -A
+exec lefthook install
+exec git commit -m 'test'
+stderr '\s*Hi there from Lefthook\s*'
+
+-- lefthook.toml --
+skip_output = [
+  'meta',
+  'summary',
+  'execution_info',
+]
+
+[pre-commit.commands.echo]
+run = "echo Hi there from Lefthook"
+

testdata/run_yml.txt

@@ -0,0 +1,17 @@
+exec git init
+exec git config user.email "you@example.com"
+exec git config user.name "Your Name"
+exec git add -A
+exec lefthook install
+exec git commit -m 'test'
+stderr '\s*Hi there from Lefthook\s*'
+
+-- lefthook.yml --
+skip_output:
+  - meta
+  - summary
+  - execution_info
+pre-commit:
+  commands:
+    echo:
+      run: echo Hi there from Lefthook

testdata/uninstall.txt

@@ -0,0 +1,18 @@
+exec git init
+exec lefthook install
+exists .git/hooks/pre-push
+exec lefthook uninstall
+! exists .git/hooks-pre-push
+exists lefthook.yml
+
+exec lefthook install
+exists .git/hooks/pre-push
+exec lefthook uninstall -c
+! exists .git/hooks-pre-push
+! exists lefthook.yml
+
+-- lefthook.yml --
+pre-push:
+  commands:
+    echo:
+      run: echo pre-push