diff --git a/Makefile b/Makefile
index 40b1f06..8756c56 100644
--- a/Makefile
+++ b/Makefile
@@ -25,3 +25,6 @@ clean:
 
 test:
 	go test ./...
+
+test-cover:
+	go test -cover ./...
diff --git a/internal/blocker/validators_test.go b/internal/blocker/validators_test.go
new file mode 100644
index 0000000..ee8b806
--- /dev/null
+++ b/internal/blocker/validators_test.go
@@ -0,0 +1,47 @@
+package blocker
+
+import (
+	"testing"
+)
+
+func TestValidateConfigPath(t *testing.T) {
+	tests := []struct {
+		name    string
+		input   string
+		wantErr bool
+	}{
+		{name: "empty", input: "", wantErr: true},
+		{name: "valid path", input: "/path/to/config", wantErr: false},
+		{name: "invalid path", input: "path/to/config", wantErr: true},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := validateConfigPath(tt.input)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("validateConfigPath(%q) error = %v, wantErr %v", tt.input, err, tt.wantErr)
+			}
+		})
+	}
+}
+
+func TestValidateIP(t *testing.T) {
+	tests := []struct {
+		name    string
+		input   string
+		wantErr bool
+	}{
+		{name: "empty", input: "", wantErr: true},
+		{name: "invalid IP", input: "1.1.1", wantErr: true},
+		{name: "valid IP", input: "1.1.1.1", wantErr: false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := validateIP(tt.input)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("validateIP(%q) error = %v, wantErr %v", tt.input, err, tt.wantErr)
+			}
+		})
+	}
+}
diff --git a/internal/storage/writer_test.go b/internal/storage/writer_test.go
new file mode 100644
index 0000000..d216d54
--- /dev/null
+++ b/internal/storage/writer_test.go
@@ -0,0 +1,40 @@
+package storage
+
+import (
+	"testing"
+	"time"
+)
+
+func TestWrite(t *testing.T) {
+	var ip string
+	d := createTestDBStruct(t)
+
+	err := d.CreateTable()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	resultCh := make(chan *LogEntry)
+
+	go Write(d, resultCh)
+
+	resultCh <- &LogEntry{
+		Service: "test",
+		IP:      "127.0.0.1",
+		Path:    "/test",
+		Method:  "GET",
+		Status:  "200",
+	}
+
+	close(resultCh)
+
+	time.Sleep(100 * time.Millisecond)
+
+	err = d.db.QueryRow("SELECT ip FROM requests LIMIT 1").Scan(&ip)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if ip != "127.0.0.1" {
+		t.Fatal("ip should be 127.0.0.1")
+	}
+}