Initial provider implementation (#18)

This brings over the initial buildx prototype from pulumi/pulumi-docker
and fixes various build and release issues.

provider/internal/provider_test.go

@@ -0,0 +1,82 @@
+// Copyright 2024, Pulumi Corporation.
+//
+// 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 internal
+
+import (
+	"context"
+	"testing"
+
+	"github.com/blang/semver"
+	"github.com/stretchr/testify/assert"
+
+	provider "github.com/pulumi/pulumi-go-provider"
+	"github.com/pulumi/pulumi-go-provider/infer"
+	"github.com/pulumi/pulumi-go-provider/integration"
+	mwcontext "github.com/pulumi/pulumi-go-provider/middleware/context"
+)
+
+func TestConfigure(t *testing.T) {
+	t.Parallel()
+
+	s := newServer(nil)
+
+	err := s.Configure(
+		provider.ConfigureRequest{},
+	)
+	assert.NoError(t, err)
+}
+
+// TestAnnotate sanity checks that our annotations don't panic.
+func TestAnnotate(t *testing.T) {
+	t.Parallel()
+
+	for _, tt := range []infer.Annotated{
+		&Config{},
+		&Image{},
+		&ImageArgs{},
+		&ImageState{},
+		&Index{},
+		&IndexArgs{},
+		&IndexState{},
+	} {
+		tt.Annotate(annotator{})
+	}
+}
+
+// TestSchema sanity checks that our schema doesn't panic.
+func TestSchema(t *testing.T) {
+	t.Parallel()
+
+	Schema(context.Background(), "v4")
+}
+
+type annotator struct{}
+
+func (annotator) Describe(_ any, _ string)         {}
+func (annotator) SetDefault(_, _ any, _ ...string) {}
+func (annotator) SetToken(_, _ string)             {}
+
+func newServer(client Client) integration.Server {
+	p := NewBuildxProvider()
+
+	// Inject a mock client if provided.
+	if client != nil {
+		p = mwcontext.Wrap(p, func(ctx provider.Context) provider.Context {
+			return provider.CtxWithValue(ctx, _mockClientKey, client)
+		})
+	}
+
+	return integration.NewServer("docker", semver.Version{Major: 4}, p)
+}