core: Testing helpers for building provider schemas

Now that a schema is required to decode resource configuration, a lot more
tests than before need access to mock providers in order to get a schema.
These new helpers allow a mock provider with a schema to be constructed
concisely.

terraform/resource_provider_mock_test.go

@@ -2,9 +2,55 @@ package terraform
 
 import (
 	"testing"
+
+	"github.com/hashicorp/terraform/config/configschema"
 )
 
 func TestMockResourceProvider_impl(t *testing.T) {
 	var _ ResourceProvider = new(MockResourceProvider)
 	var _ ResourceProviderCloser = new(MockResourceProvider)
 }
+
+// testProviderComponentFactory creates a componentFactory that contains only
+// a single given.
+func testProviderComponentFactory(name string, provider ResourceProvider) *basicComponentFactory {
+	return &basicComponentFactory{
+		providers: map[string]ResourceProviderFactory{
+			name: ResourceProviderFactoryFixed(provider),
+		},
+	}
+}
+
+// mockProviderWithConfigSchema is a test helper to concisely create a mock
+// provider with the given schema for its own configuration.
+func mockProviderWithConfigSchema(schema *configschema.Block) *MockResourceProvider {
+	return &MockResourceProvider{
+		GetSchemaReturn: &ProviderSchema{
+			Provider: schema,
+		},
+	}
+}
+
+// mockProviderWithResourceTypeSchema is a test helper to concisely create a mock
+// provider with a schema containing a single resource type.
+func mockProviderWithResourceTypeSchema(name string, schema *configschema.Block) *MockResourceProvider {
+	return &MockResourceProvider{
+		GetSchemaReturn: &ProviderSchema{
+			ResourceTypes: map[string]*configschema.Block{
+				name: schema,
+			},
+		},
+	}
+}
+
+// mockProviderWithDataSourceSchema is a test helper to concisely create a mock
+// provider with a schema containing a single data source.
+func mockProviderWithDataSourceSchema(name string, schema *configschema.Block) *MockResourceProvider {
+	return &MockResourceProvider{
+		GetSchemaReturn: &ProviderSchema{
+			DataSources: map[string]*configschema.Block{
+				name: schema,
+			},
+		},
+	}
+}