Initial commit.

internal/storage/storage_test.go

@@ -0,0 +1,107 @@
+package storage
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestEnsureDir(t *testing.T) {
+	tmpDir := t.TempDir()
+	testDir := filepath.Join(tmpDir, "test", "nested", "dir")
+
+	err := EnsureDir(testDir, 0755)
+	if err != nil {
+		t.Fatalf("EnsureDir failed: %v", err)
+	}
+
+	// Verify directory exists
+	info, err := os.Stat(testDir)
+	if err != nil {
+		t.Fatalf("Directory not created: %v", err)
+	}
+	if !info.IsDir() {
+		t.Fatalf("Path is not a directory")
+	}
+
+	// Calling again should be idempotent
+	err = EnsureDir(testDir, 0755)
+	if err != nil {
+		t.Fatalf("EnsureDir not idempotent: %v", err)
+	}
+}
+
+func TestWriteFile(t *testing.T) {
+	tmpDir := t.TempDir()
+	testFile := filepath.Join(tmpDir, "test.txt")
+	testData := []byte("test content")
+
+	// Write file
+	err := WriteFile(testFile, testData, 0644)
+	if err != nil {
+		t.Fatalf("WriteFile failed: %v", err)
+	}
+
+	// Read file back
+	data, err := os.ReadFile(testFile)
+	if err != nil {
+		t.Fatalf("ReadFile failed: %v", err)
+	}
+
+	if string(data) != string(testData) {
+		t.Fatalf("Data mismatch: got %q, want %q", string(data), string(testData))
+	}
+}
+
+func TestFileExists(t *testing.T) {
+	tmpDir := t.TempDir()
+	testFile := filepath.Join(tmpDir, "test.txt")
+
+	// File should not exist initially
+	if FileExists(testFile) {
+		t.Fatalf("File should not exist")
+	}
+
+	// Create file
+	err := WriteFile(testFile, []byte("test"), 0644)
+	if err != nil {
+		t.Fatalf("WriteFile failed: %v", err)
+	}
+
+	// File should exist now
+	if !FileExists(testFile) {
+		t.Fatalf("File should exist")
+	}
+}
+
+func TestWithLock(t *testing.T) {
+	tmpDir := t.TempDir()
+	lockFile := filepath.Join(tmpDir, "test.lock")
+	counter := 0
+
+	// Execute with lock
+	err := WithLock(lockFile, func() error {
+		counter++
+		return nil
+	})
+	if err != nil {
+		t.Fatalf("WithLock failed: %v", err)
+	}
+
+	if counter != 1 {
+		t.Fatalf("Function not executed: counter=%d", counter)
+	}
+
+	// Should be idempotent - can acquire lock multiple times sequentially
+	err = WithLock(lockFile, func() error {
+		counter++
+		return nil
+	})
+	if err != nil {
+		t.Fatalf("WithLock failed on second call: %v", err)
+	}
+
+	if counter != 2 {
+		t.Fatalf("Function not executed on second call: counter=%d", counter)
+	}
+}