test: add compatibility check for git-crypt 0.7.0

tests/linux/basic-test.sh

@@ -124,3 +124,19 @@ else
 fi
 
 echo "::notice:: ✅ Passed worktree test"
+
+echo "test compatibility with git-crypt 0.7.0"
+
+cd "$PWD"
+
+git crypt unlock "./tests/key.gitcrypt"
+# check if tests/fake.test.secrets is decrypted
+
+if xxd "./tests/fake.test.secrets" | grep -q 'GITCRYPT'; then
+    echo "fake.test.secrets is encrypted"
+    exit 1
+else
+    echo "fake.test.secrets is decrypted"
+    echo "::notice:: ✅ Passed compatibility test"
+fi
+

tests/windows/basic-test.ps1

@@ -126,6 +126,25 @@ try {
 
     Write-Host "::notice:: ✅ Passed worktree test"
 
+    # Test compatibility with git-crypt 0.7.0
+    Write-Host "Testing compatibility with git-crypt 0.7.0..."
+
+    Set-Location "$PWD"
+    git crypt unlock "./tests/key.gitcrypt"
+
+    # Check if the test file is properly decrypted
+    $testFilePath = "./tests/fake.test.secrets"
+    $bytes = [System.IO.File]::ReadAllBytes($testFilePath)[0..8]
+    $headerString = [System.Text.Encoding]::ASCII.GetString($bytes)
+
+    if ($headerString -eq "`0GITCRYPT") {
+        Write-Error "fake.test.secrets is still encrypted"
+        exit 1
+    } else {
+        Write-Host "fake.test.secrets is decrypted"
+        Write-Host "::notice:: ✅ Passed compatibility test"
+    }
+
 } finally {
     Pop-Location
     Remove-Item -Recurse -Force $TEST_DIR