Full fidelity SDKv2 crosstest.Create equality

Supply `tfprotov5.ApplyResourceChangeRequest.ProviderMeta` when we call
`ApplyResourceChange` in SDKv2 providers. This gets us to a byte for byte identical result
for SDKv2 `crosstest.Create`. This allows us to simplify (and strengthen) the comparison
to general equality.

Related to #2521

Author: iwahbe

pkg/internal/tests/cross-tests/create.go

@@ -15,8 +15,10 @@ package crosstests
 
 import (
 	"context"
+	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
 	"github.com/pulumi/pulumi/sdk/v3/go/common/resource"
@@ -118,11 +120,22 @@ func Create(
 	require.True(t, puResult.wasSet, "pulumi test was not set")
 
 	// Compare the result
-
-	assert.Equal(t, tfResult.meta, puResult.meta,
-		"assert that both providers were configured with the same provider metadata")
-
-	assertResourceDataEqual(t, resourceSchema, tfResult.data, puResult.data)
+	if assert.True(t, tfResult.wasSet) && assert.True(t, puResult.wasSet) {
+		assert.Equal(t, tfResult.meta, puResult.meta, "meta")
+		// Use cmp to check if data is equal. We need to use cmp instead of
+		// `assert`'s default `reflect.DeepEqual` because cmp treats identical
+		// function pointers as equal, but `reflect.DeepEqual` does not.
+		opts := []cmp.Option{
+			cmp.Exporter(func(reflect.Type) bool { return true }),
+			cmp.Comparer(func(x, y schema.SchemaStateFunc) bool {
+				return reflect.ValueOf(x).Pointer() == reflect.ValueOf(y).Pointer()
+			}),
+		}
+		if !cmp.Equal(tfResult.data, puResult.data, opts...) {
+			t.Logf("Diff: %s", cmp.Diff(tfResult.data, puResult.data, opts...))
+			t.Fail()
+		}
+	}
 }
 
 type createOpts struct {

pkg/tfshim/sdk-v2/provider2.go

@@ -637,11 +637,26 @@ func (s *grpcServer) ApplyResourceChange(
 	if err != nil {
 		return nil, err
 	}
+
+	var providerMetaVal []byte
+	if providerMeta != nil {
+		providerMetaVal, err = msgpack.Marshal(*providerMeta, providerMeta.Type())
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		providerMetaVal, err = msgpack.Marshal(cty.NullVal(cty.EmptyObject), cty.EmptyObject)
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	req := &tfprotov5.ApplyResourceChangeRequest{
 		TypeName:     typeName,
 		Config:       &tfprotov5.DynamicValue{MsgPack: configVal},
 		PriorState:   &tfprotov5.DynamicValue{MsgPack: priorStateVal},
 		PlannedState: &tfprotov5.DynamicValue{MsgPack: plannedStateVal},
+		ProviderMeta: &tfprotov5.DynamicValue{MsgPack: providerMetaVal},
 	}
 	if len(plannedMeta) > 0 {
 		plannedPrivate, err := json.Marshal(plannedMeta)