diff --git a/tests/providers/gcp/lib/fix/gcpfixer_test.py b/tests/providers/gcp/lib/fix/gcpfixer_test.py
new file mode 100644
index 0000000000..19319e855a
--- /dev/null
+++ b/tests/providers/gcp/lib/fix/gcpfixer_test.py
@@ -0,0 +1,98 @@
+from unittest.mock import patch
+
+from prowler.lib.check.models import (
+    Check_Report_GCP,
+    CheckMetadata,
+    Code,
+    Recommendation,
+    Remediation,
+)
+from prowler.providers.gcp.lib.fix.fixer import GCPFixer
+
+
+def get_mock_gcp_finding():
+    metadata = CheckMetadata(
+        Provider="gcp",
+        CheckID="test_check",
+        CheckTitle="Test Check",
+        CheckType=["type1"],
+        CheckAliases=[],
+        ServiceName="testservice",
+        SubServiceName="",
+        ResourceIdTemplate="",
+        Severity="low",
+        ResourceType="resource",
+        Description="desc",
+        Risk="risk",
+        RelatedUrl="url",
+        Remediation=Remediation(
+            Code=Code(NativeIaC="", Terraform="", CLI="", Other=""),
+            Recommendation=Recommendation(Text="", Url=""),
+        ),
+        Categories=["cat1"],
+        DependsOn=[],
+        RelatedTo=[],
+        Notes="",
+        Compliance=[],
+    )
+    return Check_Report_GCP(
+        metadata.dict(),
+        project_id="project_id",
+        resource_id="resource_id",
+        resource_name="resource_name",
+        location="location",
+    )
+
+
+class TestGCPFixer:
+    def test_fix_success(self):
+        finding = get_mock_gcp_finding()
+        finding.status = "FAIL"
+        fixer = GCPFixer(description="desc", service="compute")
+        assert fixer.fix(finding=finding)
+
+    def test_fix_failure(self, caplog):
+        finding = get_mock_gcp_finding()
+        finding.status = "FAIL"
+        fixer = GCPFixer(description="desc", service="compute")
+        with patch("prowler.providers.gcp.lib.fix.fixer.logger") as mock_logger:
+            with caplog.at_level("ERROR"):
+                result = fixer.fix(finding=None)
+                assert result is False
+                assert mock_logger.error.called
+
+    def test_get_fixer_info(self):
+        fixer = GCPFixer(
+            description="desc",
+            service="compute",
+            cost_impact=True,
+            cost_description="cost",
+            iam_policy_required={"roles": ["roles/owner"]},
+        )
+        info = fixer._get_fixer_info()
+        assert info["description"] == "desc"
+        assert info["cost_impact"] is True
+        assert info["cost_description"] == "cost"
+        assert info["service"] == "compute"
+        assert info["iam_policy_required"] == {"roles": ["roles/owner"]}
+        assert info["provider"] == "gcp"
+
+    def test_fix_prints(self):
+        fixer = GCPFixer(description="desc", service="compute")
+        finding = get_mock_gcp_finding()
+        with (
+            patch("builtins.print") as mock_print,
+            patch("prowler.providers.gcp.lib.fix.fixer.logger"),
+        ):
+            result = fixer.fix(finding=finding)
+            assert result is True
+            mock_print.assert_called_once_with(
+                f"\tFIXING {finding.resource_id} in project {finding.project_id}..."
+            )
+
+    def test_fix_exception(self):
+        fixer = GCPFixer(description="desc", service="compute")
+        with patch("prowler.providers.gcp.lib.fix.fixer.logger") as mock_logger:
+            result = fixer.fix(finding=None)
+            assert result is False
+            assert mock_logger.error.called
diff --git a/tests/providers/gcp/services/compute/compute_project_os_login_enabled/compute_project_os_login_enabled_fixer_test.py b/tests/providers/gcp/services/compute/compute_project_os_login_enabled/compute_project_os_login_enabled_fixer_test.py
new file mode 100644
index 0000000000..abfd4ea361
--- /dev/null
+++ b/tests/providers/gcp/services/compute/compute_project_os_login_enabled/compute_project_os_login_enabled_fixer_test.py
@@ -0,0 +1,130 @@
+from re import search
+from unittest import mock
+
+from prowler.providers.gcp.models import GCPProject
+from tests.providers.gcp.gcp_fixtures import GCP_PROJECT_ID, set_mocked_gcp_provider
+
+
+class Test_compute_project_os_login_enabled:
+    def test_compute_no_project(self):
+        compute_client = mock.MagicMock()
+        compute_client.project_ids = [GCP_PROJECT_ID]
+        compute_client.projects = []
+
+        with (
+            mock.patch(
+                "prowler.providers.common.provider.Provider.get_global_provider",
+                return_value=set_mocked_gcp_provider(),
+            ),
+            mock.patch(
+                "prowler.providers.gcp.services.compute.compute_project_os_login_enabled.compute_project_os_login_enabled.compute_client",
+                new=compute_client,
+            ),
+        ):
+            from prowler.providers.gcp.services.compute.compute_project_os_login_enabled.compute_project_os_login_enabled import (
+                compute_project_os_login_enabled,
+            )
+
+            check = compute_project_os_login_enabled()
+            result = check.execute()
+            assert len(result) == 0
+
+    def test_one_compliant_project(self):
+        from prowler.providers.gcp.services.compute.compute_service import Project
+
+        project = Project(
+            id=GCP_PROJECT_ID,
+            enable_oslogin=True,
+        )
+
+        compute_client = mock.MagicMock()
+        compute_client.project_ids = [GCP_PROJECT_ID]
+        compute_client.compute_projects = [project]
+        compute_client.projects = {
+            GCP_PROJECT_ID: GCPProject(
+                id=GCP_PROJECT_ID,
+                number="123456789012",
+                name="test",
+                labels={},
+                lifecycle_state="ACTIVE",
+            )
+        }
+        compute_client.region = "global"
+
+        with (
+            mock.patch(
+                "prowler.providers.common.provider.Provider.get_global_provider",
+                return_value=set_mocked_gcp_provider(),
+            ),
+            mock.patch(
+                "prowler.providers.gcp.services.compute.compute_project_os_login_enabled.compute_project_os_login_enabled.compute_client",
+                new=compute_client,
+            ),
+        ):
+            from prowler.providers.gcp.services.compute.compute_project_os_login_enabled.compute_project_os_login_enabled import (
+                compute_project_os_login_enabled,
+            )
+
+            check = compute_project_os_login_enabled()
+            result = check.execute()
+
+            assert len(result) == 1
+            assert result[0].status == "PASS"
+            assert search(
+                f"Project {project.id} has OS Login enabled",
+                result[0].status_extended,
+            )
+            assert result[0].resource_id == project.id
+            assert result[0].resource_name == "test"
+            assert result[0].location == "global"
+            assert result[0].project_id == GCP_PROJECT_ID
+
+    def test_one_non_compliant_project(self):
+        from prowler.providers.gcp.services.compute.compute_service import Project
+
+        project = Project(
+            id=GCP_PROJECT_ID,
+            enable_oslogin=False,
+        )
+
+        compute_client = mock.MagicMock()
+        compute_client.project_ids = [GCP_PROJECT_ID]
+        compute_client.compute_projects = [project]
+        compute_client.projects = {
+            GCP_PROJECT_ID: GCPProject(
+                id=GCP_PROJECT_ID,
+                number="123456789012",
+                name="test",
+                labels={},
+                lifecycle_state="ACTIVE",
+            )
+        }
+        compute_client.region = "global"
+
+        with (
+            mock.patch(
+                "prowler.providers.common.provider.Provider.get_global_provider",
+                return_value=set_mocked_gcp_provider(),
+            ),
+            mock.patch(
+                "prowler.providers.gcp.services.compute.compute_project_os_login_enabled.compute_project_os_login_enabled.compute_client",
+                new=compute_client,
+            ),
+        ):
+            from prowler.providers.gcp.services.compute.compute_project_os_login_enabled.compute_project_os_login_enabled import (
+                compute_project_os_login_enabled,
+            )
+
+            check = compute_project_os_login_enabled()
+            result = check.execute()
+
+            assert len(result) == 1
+            assert result[0].status == "FAIL"
+            assert search(
+                f"Project {project.id} does not have OS Login enabled",
+                result[0].status_extended,
+            )
+            assert result[0].resource_id == project.id
+            assert result[0].resource_name == "test"
+            assert result[0].location == "global"
+            assert result[0].project_id == GCP_PROJECT_ID