GetFSFromLayers

* add util.GetFSFromLayers
* GetFSFromImage delegates to GetFSFromLayers
* add FSOpts and FSConfig for GetFSFromLayers
* add tests for GetFSFromLayers
* add gomock for test support
* add mock_v1 for layers

pkg/mocks/go-containerregistry/mock_v1/mocks.go

@@ -0,0 +1,126 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: github.com/google/go-containerregistry/pkg/v1 (interfaces: Layer)
+
+// Package mock_v1 is a generated GoMock package.
+package mock_v1
+
+import (
+	gomock "github.com/golang/mock/gomock"
+	v1 "github.com/google/go-containerregistry/pkg/v1"
+	types "github.com/google/go-containerregistry/pkg/v1/types"
+	io "io"
+	reflect "reflect"
+)
+
+// MockLayer is a mock of Layer interface
+type MockLayer struct {
+	ctrl     *gomock.Controller
+	recorder *MockLayerMockRecorder
+}
+
+// MockLayerMockRecorder is the mock recorder for MockLayer
+type MockLayerMockRecorder struct {
+	mock *MockLayer
+}
+
+// NewMockLayer creates a new mock instance
+func NewMockLayer(ctrl *gomock.Controller) *MockLayer {
+	mock := &MockLayer{ctrl: ctrl}
+	mock.recorder = &MockLayerMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use
+func (m *MockLayer) EXPECT() *MockLayerMockRecorder {
+	return m.recorder
+}
+
+// Compressed mocks base method
+func (m *MockLayer) Compressed() (io.ReadCloser, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Compressed")
+	ret0, _ := ret[0].(io.ReadCloser)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// Compressed indicates an expected call of Compressed
+func (mr *MockLayerMockRecorder) Compressed() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Compressed", reflect.TypeOf((*MockLayer)(nil).Compressed))
+}
+
+// DiffID mocks base method
+func (m *MockLayer) DiffID() (v1.Hash, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "DiffID")
+	ret0, _ := ret[0].(v1.Hash)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// DiffID indicates an expected call of DiffID
+func (mr *MockLayerMockRecorder) DiffID() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "DiffID", reflect.TypeOf((*MockLayer)(nil).DiffID))
+}
+
+// Digest mocks base method
+func (m *MockLayer) Digest() (v1.Hash, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Digest")
+	ret0, _ := ret[0].(v1.Hash)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// Digest indicates an expected call of Digest
+func (mr *MockLayerMockRecorder) Digest() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Digest", reflect.TypeOf((*MockLayer)(nil).Digest))
+}
+
+// MediaType mocks base method
+func (m *MockLayer) MediaType() (types.MediaType, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "MediaType")
+	ret0, _ := ret[0].(types.MediaType)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// MediaType indicates an expected call of MediaType
+func (mr *MockLayerMockRecorder) MediaType() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "MediaType", reflect.TypeOf((*MockLayer)(nil).MediaType))
+}
+
+// Size mocks base method
+func (m *MockLayer) Size() (int64, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Size")
+	ret0, _ := ret[0].(int64)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// Size indicates an expected call of Size
+func (mr *MockLayerMockRecorder) Size() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Size", reflect.TypeOf((*MockLayer)(nil).Size))
+}
+
+// Uncompressed mocks base method
+func (m *MockLayer) Uncompressed() (io.ReadCloser, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Uncompressed")
+	ret0, _ := ret[0].(io.ReadCloser)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// Uncompressed indicates an expected call of Uncompressed
+func (mr *MockLayerMockRecorder) Uncompressed() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Uncompressed", reflect.TypeOf((*MockLayer)(nil).Uncompressed))
+}