fix: cross-platform CI test fixes and parse bug fix

- Add .gitattributes to force LF in mock files (Windows autocrlf)
- Fix parse.go: detect line endings from content instead of runtime.GOOS
- Add fail-fast: false to CI matrix; trigger on all branch pushes
- Skip chmod-based tests on Windows (permissions work differently)
- Use filepath.Join for expected paths in Windows path tests
- Use platform-appropriate invalid paths in error tests
- Add Windows absolute path test case for ValidateSheetName
- Skip Unix-specific integration tests on Windows

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

internal/cheatpath/validate_test.go

@@ -1,6 +1,7 @@
 package cheatpath
 
 import (
+	"runtime"
 	"strings"
 	"testing"
 )
@@ -53,9 +54,15 @@ func TestValidateSheetName(t *testing.T) {
 			errMsg:  "'..'",
 		},
 		{
-			name:    "absolute path",
+			name:    "absolute path unix",
 			input:   "/etc/passwd",
-			wantErr: true,
+			wantErr: runtime.GOOS != "windows", // /etc/passwd is not absolute on Windows
+			errMsg:  "absolute",
+		},
+		{
+			name:    "absolute path windows",
+			input:   `C:\evil`,
+			wantErr: runtime.GOOS == "windows", // C:\evil is not absolute on Unix
 			errMsg:  "absolute",
 		},
 		{

internal/config/config_extended_test.go

@@ -3,6 +3,7 @@ package config
 import (
 	"os"
 	"path/filepath"
+	"runtime"
 	"testing"
 
 	"github.com/cheat/cheat/internal/mock"
@@ -226,6 +227,10 @@ cheatpaths:
 
 // TestConfigGetCwdError tests error handling when os.Getwd fails
 func TestConfigGetCwdError(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("Windows does not allow removing the current directory")
+	}
+
 	// This is difficult to test without being able to break os.Getwd
 	// We'll create a scenario where the current directory is removed
 

internal/config/config_test.go

@@ -4,6 +4,7 @@ import (
 	"os"
 	"path/filepath"
 	"reflect"
+	"runtime"
 	"testing"
 
 	"github.com/davecgh/go-spew/spew"
@@ -78,6 +79,9 @@ func TestConfigFailure(t *testing.T) {
 // TestEmptyEditor asserts that envvars are respected if an editor is not
 // specified in the configs
 func TestEmptyEditor(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("Editor() returns notepad on Windows before checking env vars")
+	}
 
 	// clear the environment variables
 	os.Setenv("VISUAL", "")

internal/config/init_test.go

@@ -3,6 +3,7 @@ package config
 import (
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"testing"
 )
@@ -74,12 +75,18 @@ func TestInitCreateDirectory(t *testing.T) {
 // TestInitWriteError tests error handling when file write fails
 func TestInitWriteError(t *testing.T) {
 	// Skip this test if running as root (can write anywhere)
-	if os.Getuid() == 0 {
+	if runtime.GOOS != "windows" && os.Getuid() == 0 {
 		t.Skip("Cannot test write errors as root")
 	}
 
+	// Use a platform-appropriate invalid path
+	invalidPath := "/dev/null/impossible/path/conf.yml"
+	if runtime.GOOS == "windows" {
+		invalidPath = `NUL\impossible\path\conf.yml`
+	}
+
 	// Try to write to a read-only directory
-	err := Init("/dev/null/impossible/path/conf.yml", "test")
+	err := Init(invalidPath, "test")
 	if err == nil {
 		t.Error("expected error when writing to invalid path, got nil")
 	}

internal/config/paths_test.go

@@ -1,7 +1,9 @@
 package config
 
 import (
+	"path/filepath"
 	"reflect"
+	"runtime"
 	"testing"
 
 	"github.com/davecgh/go-spew/spew"
@@ -10,6 +12,9 @@ import (
 // TestValidatePathsNix asserts that the proper config paths are returned on
 // *nix platforms
 func TestValidatePathsNix(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("filepath.Join uses backslashes on Windows")
+	}
 
 	// mock the user's home directory
 	home := "/home/foo"
@@ -57,6 +62,9 @@ func TestValidatePathsNix(t *testing.T) {
 // TestValidatePathsNixNoXDG asserts that the proper config paths are returned
 // on *nix platforms when `XDG_CONFIG_HOME is not set
 func TestValidatePathsNixNoXDG(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("filepath.Join uses backslashes on Windows")
+	}
 
 	// mock the user's home directory
 	home := "/home/foo"
@@ -106,8 +114,8 @@ func TestValidatePathsWindows(t *testing.T) {
 
 	// mock some envvars
 	envvars := map[string]string{
-		"APPDATA":     "/apps",
-		"PROGRAMDATA": "/programs",
+		"APPDATA":     filepath.Join("C:", "apps"),
+		"PROGRAMDATA": filepath.Join("C:", "programs"),
 	}
 
 	// get the paths for the platform
@@ -118,8 +126,8 @@ func TestValidatePathsWindows(t *testing.T) {
 
 	// specify the expected output
 	want := []string{
-		"/apps/cheat/conf.yml",
-		"/programs/cheat/conf.yml",
+		filepath.Join("C:", "apps", "cheat", "conf.yml"),
+		filepath.Join("C:", "programs", "cheat", "conf.yml"),
 	}
 
 	// assert that output matches expectations

internal/installer/run_test.go

@@ -5,6 +5,7 @@ import (
 	"io"
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"testing"
 )
@@ -69,23 +70,31 @@ cheatpaths:
 			wantInErr: "failed to clone cheatsheets",
 		},
 		{
-			name:      "invalid config path",
-			configs:   "test",
-			confpath:  "/nonexistent/path/conf.yml",
+			name:    "invalid config path",
+			configs: "test",
+			// /dev/null/... is truly uncreatable on Unix;
+			// NUL\... is uncreatable on Windows
+			confpath: func() string {
+				if runtime.GOOS == "windows" {
+					return `NUL\impossible\conf.yml`
+				}
+				return "/dev/null/impossible/conf.yml"
+			}(),
 			userInput: "n\n",
 			wantErr:   true,
-			wantInErr: "failed to create config file",
+			wantInErr: "failed to create",
 		},
 	}
 
-	// Pre-create a non-empty community dir so PlainClone fails reliably
-	// (otherwise, on CI runners with network access, the clone succeeds)
-	cloneBlocker := filepath.Join(tempDir, "conf2", "cheatsheets", "community")
-	if err := os.MkdirAll(cloneBlocker, 0755); err != nil {
-		t.Fatalf("failed to create clone blocker dir: %v", err)
+	// Pre-create a .git dir inside the community path so go-git's PlainClone
+	// returns ErrRepositoryAlreadyExists (otherwise, on CI runners with
+	// network access, the real clone succeeds and the test fails)
+	fakeGitDir := filepath.Join(tempDir, "conf2", "cheatsheets", "community", ".git")
+	if err := os.MkdirAll(fakeGitDir, 0755); err != nil {
+		t.Fatalf("failed to create fake .git dir: %v", err)
 	}
-	if err := os.WriteFile(filepath.Join(cloneBlocker, ".gitkeep"), []byte(""), 0644); err != nil {
-		t.Fatalf("failed to write clone blocker file: %v", err)
+	if err := os.WriteFile(filepath.Join(fakeGitDir, "HEAD"), []byte("ref: refs/heads/main\n"), 0644); err != nil {
+		t.Fatalf("failed to write fake HEAD: %v", err)
 	}
 
 	for _, tt := range tests {

internal/repo/clone_test.go

@@ -3,6 +3,7 @@ package repo
 import (
 	"os"
 	"path/filepath"
+	"runtime"
 	"testing"
 )
 
@@ -12,6 +13,9 @@ func TestClone(t *testing.T) {
 	// that don't require actual cloning
 
 	t.Run("clone to read-only directory", func(t *testing.T) {
+		if runtime.GOOS == "windows" {
+			t.Skip("chmod does not restrict writes on Windows")
+		}
 		if os.Getuid() == 0 {
 			t.Skip("Cannot test read-only directory as root")
 		}

internal/sheet/copy_error_test.go

@@ -3,6 +3,7 @@ package sheet
 import (
 	"os"
 	"path/filepath"
+	"runtime"
 	"testing"
 )
 
@@ -130,6 +131,10 @@ func TestCopyIOError(t *testing.T) {
 
 // TestCopyCleanupOnError verifies that partially written files are cleaned up on error
 func TestCopyCleanupOnError(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("chmod does not restrict reads on Windows")
+	}
+
 	// Create a source file that we'll make unreadable after opening
 	src, err := os.CreateTemp("", "copy-test-cleanup-*")
 	if err != nil {

internal/sheet/parse.go

@@ -2,7 +2,6 @@ package sheet
 
 import (
 	"fmt"
-	"runtime"
 	"strings"
 
 	"gopkg.in/yaml.v3"
@@ -11,9 +10,9 @@ import (
 // Parse parses cheatsheet frontmatter
 func parse(markdown string) (frontmatter, string, error) {
 
-	// determine the appropriate line-break for the platform
+	// detect the line-break style used in the content
 	linebreak := "\n"
-	if runtime.GOOS == "windows" {
+	if strings.Contains(markdown, "\r\n") {
 		linebreak = "\r\n"
 	}
 

internal/sheet/parse_extended_test.go

@@ -1,17 +1,11 @@
 package sheet
 
 import (
-	"runtime"
 	"testing"
 )
 
 // TestParseWindowsLineEndings tests parsing with Windows line endings
 func TestParseWindowsLineEndings(t *testing.T) {
-	// Only test Windows line endings on Windows
-	if runtime.GOOS != "windows" {
-		t.Skip("Skipping Windows line ending test on non-Windows platform")
-	}
-
 	// stub our cheatsheet content with Windows line endings
 	markdown := "---\r\nsyntax: go\r\ntags: [ test ]\r\n---\r\nTo foo the bar: baz"