Copy files from nvidia-container-toolkit

Signed-off-by: Evan Lezar <elezar@nvidia.com>

pkg/runtime/runtime_modifier_test.go

@@ -0,0 +1,160 @@
+/*
+# Copyright (c) 2021, NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+*/
+
+package runtime
+
+import (
+	"fmt"
+	"testing"
+
+	testlog "github.com/sirupsen/logrus/hooks/test"
+	"github.com/stretchr/testify/require"
+	"gitlab.com/nvidia/cloud-native/container-toolkit/pkg/modify"
+	"gitlab.com/nvidia/cloud-native/container-toolkit/pkg/oci"
+)
+
+func TestRuntimeModifier(t *testing.T) {
+	logger, _ := testlog.NewNullLogger()
+
+	testCases := []struct {
+		args         []string
+		shouldModify bool
+	}{
+		{},
+		{
+			args:         []string{"create"},
+			shouldModify: true,
+		},
+	}
+
+	for _, tc := range testCases {
+		runtimeMock := &oci.RuntimeMock{}
+		specMock := &oci.SpecMock{}
+		modifierMock := &modify.ModifierMock{}
+
+		r := NewModifyingRuntimeWrapperWithLogger(
+			logger,
+			runtimeMock,
+			specMock,
+			modifierMock,
+		)
+
+		err := r.Exec(tc.args)
+
+		require.NoError(t, err)
+
+		expectedCalls := 0
+		if tc.shouldModify {
+			expectedCalls = 1
+		}
+
+		require.Len(t, specMock.LoadCalls(), expectedCalls)
+		require.Len(t, modifierMock.ModifyCalls(), expectedCalls)
+		require.Len(t, specMock.FlushCalls(), expectedCalls)
+
+		require.Len(t, runtimeMock.ExecCalls(), 1)
+	}
+}
+
+func TestRuntimeModiferWithLoadError(t *testing.T) {
+	logger, _ := testlog.NewNullLogger()
+
+	runtimeMock := &oci.RuntimeMock{}
+	specMock := &oci.SpecMock{
+		LoadFunc: specErrorFunc,
+	}
+	modifierMock := &modify.ModifierMock{}
+
+	r := NewModifyingRuntimeWrapperWithLogger(
+		logger,
+		runtimeMock,
+		specMock,
+		modifierMock,
+	)
+
+	err := r.Exec([]string{"create"})
+
+	require.Error(t, err)
+
+	require.Len(t, specMock.LoadCalls(), 1)
+	require.Len(t, modifierMock.ModifyCalls(), 0)
+	require.Len(t, specMock.FlushCalls(), 0)
+
+	require.Len(t, runtimeMock.ExecCalls(), 0)
+}
+
+func TestRuntimeModiferWithFlushError(t *testing.T) {
+	logger, _ := testlog.NewNullLogger()
+
+	runtimeMock := &oci.RuntimeMock{}
+	specMock := &oci.SpecMock{
+		FlushFunc: specErrorFunc,
+	}
+	modifierMock := &modify.ModifierMock{}
+
+	r := NewModifyingRuntimeWrapperWithLogger(
+		logger,
+		runtimeMock,
+		specMock,
+		modifierMock,
+	)
+
+	err := r.Exec([]string{"create"})
+
+	require.Error(t, err)
+
+	require.Len(t, specMock.LoadCalls(), 1)
+	require.Len(t, modifierMock.ModifyCalls(), 1)
+	require.Len(t, specMock.FlushCalls(), 1)
+
+	require.Len(t, runtimeMock.ExecCalls(), 0)
+}
+
+func TestRuntimeModiferWithModifyError(t *testing.T) {
+	logger, _ := testlog.NewNullLogger()
+
+	runtimeMock := &oci.RuntimeMock{}
+	specMock := &oci.SpecMock{}
+	modifierMock := &modify.ModifierMock{
+		ModifyFunc: modifierErrorFunc,
+	}
+
+	r := NewModifyingRuntimeWrapperWithLogger(
+		logger,
+		runtimeMock,
+		specMock,
+		modifierMock,
+	)
+
+	err := r.Exec([]string{"create"})
+
+	require.Error(t, err)
+
+	require.Len(t, specMock.LoadCalls(), 1)
+	require.Len(t, modifierMock.ModifyCalls(), 1)
+	require.Len(t, specMock.FlushCalls(), 0)
+
+	require.Len(t, runtimeMock.ExecCalls(), 0)
+
+}
+
+func specErrorFunc() error {
+	return fmt.Errorf("error")
+}
+
+func modifierErrorFunc(oci.Spec) error {
+	return fmt.Errorf("error")
+}