diff --git a/testdata/add.txt b/testdata/add.txt
index 4aa86233..da9e0e95 100644
--- a/testdata/add.txt
+++ b/testdata/add.txt
@@ -1,3 +1,5 @@
+[windows] skip
+
 exec git init
 exec lefthook add pre-commit
 ! stderr .
diff --git a/testdata/dump.txt b/testdata/dump.txt
index 3857f0d4..5a5559e3 100644
--- a/testdata/dump.txt
+++ b/testdata/dump.txt
@@ -1,3 +1,5 @@
+[windows] skip
+
 exec git init
 exec lefthook dump
 cmp stdout lefthook-dumped.yml
diff --git a/testdata/remote.txt b/testdata/remote.txt
index 72435af1..df0c246b 100644
--- a/testdata/remote.txt
+++ b/testdata/remote.txt
@@ -1,3 +1,5 @@
+[windows] skip
+
 exec git init
 exec lefthook install
 
diff --git a/testdata/remotes.txt b/testdata/remotes.txt
index 7858b6e3..beffc20f 100644
--- a/testdata/remotes.txt
+++ b/testdata/remotes.txt
@@ -1,3 +1,5 @@
+[windows] skip
+
 exec git init
 exec lefthook install
 
diff --git a/testdata/run_interrupt.txt b/testdata/run_interrupt.txt
index 9103d014..2716c53d 100644
--- a/testdata/run_interrupt.txt
+++ b/testdata/run_interrupt.txt
@@ -1,3 +1,5 @@
+[windows] skip
+
 chmod 0700 hook.sh
 chmod 0700 commit-with-interrupt.sh
 exec git init
diff --git a/testdata/sh_syntax_in_files.txt b/testdata/sh_syntax_in_files.txt
index a45c9a25..18e4e037 100644
--- a/testdata/sh_syntax_in_files.txt
+++ b/testdata/sh_syntax_in_files.txt
@@ -3,7 +3,9 @@ exec lefthook install
 exec git config user.email "you@example.com"
 exec git config user.name "Your Name"
 
-exec lefthook run echo_files
+[unix] exec lefthook run echo_files
+[windows] exec lefthook run echo_files_windows
+
 stdout '1.txt 10.txt'
 
 -- lefthook.yml --
@@ -22,6 +24,12 @@ echo_files:
       files: ls | grep 1
       run: echo {files}
 
+echo_files_windows:
+  commands:
+    echo:
+      files: dir | findstr "1"
+      run: echo {files}
+
 -- 1.txt --
 1.txt
 
diff --git a/testdata/skip_run.txt b/testdata/skip_run.txt
index 0db312bb..7e2af672 100644
--- a/testdata/skip_run.txt
+++ b/testdata/skip_run.txt
@@ -1,3 +1,5 @@
+[windows] skip
+
 exec git init
 exec git add -A
 exec lefthook run skip
@@ -5,14 +7,12 @@ exec lefthook run skip
 exec lefthook run no-skip
 stdout 'Ha-ha!'
 
-[unix] exec lefthook run skip-var
-[windows] exec lefthook run skip-var-windows
+exec lefthook run skip-var
 ! stdout 'Ha-ha!'
 
 env VAR=1
-[unix] exec lefthook run skip-var
-[windows] exec lefthook run skip-var-windows
-  stdout 'Ha-ha!'
+exec lefthook run skip-var
+stdout 'Ha-ha!'
 
 -- lefthook.yml --
 skip_output:
@@ -40,10 +40,3 @@ skip-var:
   commands:
     echo:
       run: echo 'Ha-ha!'
-
-skip-var-windows:
-  skip:
-    - run: if (-not $env:VAR) { exit 1 } else { exit 0 }
-  commands:
-    echo:
-      run: echo 'Ha-ha!'
diff --git a/testdata/skip_run_windows.txt b/testdata/skip_run_windows.txt
new file mode 100644
index 00000000..39f5833e
--- /dev/null
+++ b/testdata/skip_run_windows.txt
@@ -0,0 +1,42 @@
+[!windows] skip
+
+exec git init
+exec git add -A
+exec lefthook run skip
+! stdout 'Ha-ha!'
+exec lefthook run no-skip
+stdout 'Ha-ha!'
+
+exec lefthook run skip-var
+! stdout 'Ha-ha!'
+
+env VAR=1
+exec lefthook run skip-var
+stdout 'Ha-ha!'
+
+-- lefthook.yml --
+skip_output:
+  - skips
+  - meta
+  - summary
+  - execution_info
+skip:
+  skip:
+    - run: powershell -Command "if (1 -eq 1) { exit 0 } else { exit 1 }"
+  commands:
+    echo:
+      run: echo 'Ha-ha!'
+
+no-skip:
+  skip:
+    - run: powershell -Command "if (1 -eq 0) { exit 0 } else { exit 1 }"
+  commands:
+    echo:
+      run: echo 'Ha-ha!'
+
+skip-var:
+  skip:
+    - run: powershell -Command "if ([string]::IsNullOrEmpty($env:VAR)) { exit 0 } else { exit 1 }"
+  commands:
+    echo:
+      run: echo 'Ha-ha!'