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// Copyright 2021 Google LLC
//
// 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
//
// https://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.
#include "eval/compiler/flat_expr_builder.h"
#include <cstdint>
#include <functional>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "cel/expr/checked.pb.h"
#include "cel/expr/syntax.pb.h"
#include "google/protobuf/field_mask.pb.h"
#include "google/protobuf/descriptor.pb.h"
#include "absl/base/nullability.h"
#include "absl/container/flat_hash_map.h"
#include "absl/log/absl_check.h"
#include "absl/status/status.h"
#include "absl/status/status_matchers.h"
#include "absl/status/statusor.h"
#include "absl/strings/str_split.h"
#include "absl/strings/string_view.h"
#include "absl/time/time.h"
#include "absl/types/span.h"
#include "base/builtins.h"
#include "common/function_descriptor.h"
#include "common/kind.h"
#include "common/value.h"
#include "eval/compiler/cel_expression_builder_flat_impl.h"
#include "eval/compiler/constant_folding.h"
#include "eval/compiler/qualified_reference_resolver.h"
#include "eval/public/activation.h"
#include "eval/public/builtin_func_registrar.h"
#include "eval/public/cel_attribute.h"
#include "eval/public/cel_builtins.h"
#include "eval/public/cel_expr_builder_factory.h"
#include "eval/public/cel_expression.h"
#include "eval/public/cel_function.h"
#include "eval/public/cel_function_adapter.h"
#include "eval/public/cel_function_registry.h"
#include "eval/public/cel_options.h"
#include "eval/public/cel_value.h"
#include "eval/public/containers/container_backed_map_impl.h"
#include "eval/public/portable_cel_function_adapter.h"
#include "eval/public/structs/cel_proto_descriptor_pool_builder.h"
#include "eval/public/structs/cel_proto_wrapper.h"
#include "eval/public/testing/matchers.h"
#include "eval/public/unknown_attribute_set.h"
#include "eval/public/unknown_set.h"
#include "eval/testutil/test_message.pb.h"
#include "internal/proto_matchers.h"
#include "internal/status_macros.h"
#include "internal/testing.h"
#include "parser/options.h"
#include "parser/parser.h"
#include "runtime/function.h"
#include "runtime/function_adapter.h"
#include "runtime/internal/runtime_env_testing.h"
#include "runtime/runtime_options.h"
#include "runtime/standard_functions.h"
#include "cel/expr/conformance/proto3/test_all_types.pb.h"
#include "google/protobuf/arena.h"
#include "google/protobuf/descriptor.h"
#include "google/protobuf/dynamic_message.h"
#include "google/protobuf/message.h"
#include "google/protobuf/text_format.h"
namespace google::api::expr::runtime {
namespace {
using ::absl_testing::IsOk;
using ::absl_testing::StatusIs;
using ::cel::BytesValue;
using ::cel::Value;
using ::cel::expr::conformance::proto3::TestAllTypes;
using ::cel::internal::test::EqualsProto;
using ::cel::runtime_internal::NewTestingRuntimeEnv;
using ::cel::expr::CheckedExpr;
using ::cel::expr::Expr;
using ::cel::expr::ParsedExpr;
using ::cel::expr::SourceInfo;
using ::testing::_;
using ::testing::Eq;
using ::testing::HasSubstr;
using ::testing::SizeIs;
using ::testing::Truly;
class ConcatFunction : public CelFunction {
public:
explicit ConcatFunction() : CelFunction(CreateDescriptor()) {}
static CelFunctionDescriptor CreateDescriptor() {
return CelFunctionDescriptor{
"concat", false, {CelValue::Type::kString, CelValue::Type::kString}};
}
absl::Status Evaluate(absl::Span<const CelValue> args, CelValue* result,
google::protobuf::Arena* arena) const override {
if (args.size() != 2) {
return absl::InvalidArgumentError("Bad arguments number");
}
std::string concat = std::string(args[0].StringOrDie().value()) +
std::string(args[1].StringOrDie().value());
auto* concatenated =
google::protobuf::Arena::Create<std::string>(arena, std::move(concat));
*result = CelValue::CreateString(concatenated);
return absl::OkStatus();
}
};
class RecorderFunction : public CelFunction {
public:
explicit RecorderFunction(const std::string& name, int* count)
: CelFunction(CelFunctionDescriptor{name, false, {}}), count_(count) {}
absl::Status Evaluate(absl::Span<const CelValue> args, CelValue* result,
google::protobuf::Arena* arena) const override {
if (!args.empty()) {
return absl::Status(absl::StatusCode::kInvalidArgument,
"Bad arguments number");
}
(*count_)++;
*result = CelValue::CreateBool(true);
return absl::OkStatus();
}
int* count_;
};
TEST(FlatExprBuilderTest, SimpleEndToEnd) {
Expr expr;
SourceInfo source_info;
auto call_expr = expr.mutable_call_expr();
call_expr->set_function("concat");
auto arg1 = call_expr->add_args();
arg1->mutable_const_expr()->set_string_value("prefix");
auto arg2 = call_expr->add_args();
arg2->mutable_ident_expr()->set_name("value");
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(
builder.GetRegistry()->Register(std::make_unique<ConcatFunction>()),
IsOk());
ASSERT_OK_AND_ASSIGN(auto cel_expr,
builder.CreateExpression(&expr, &source_info));
std::string variable = "test";
Activation activation;
activation.InsertValue("value", CelValue::CreateString(&variable));
google::protobuf::Arena arena;
ASSERT_OK_AND_ASSIGN(CelValue result, cel_expr->Evaluate(activation, &arena));
ASSERT_TRUE(result.IsString());
EXPECT_THAT(result.StringOrDie().value(), Eq("prefixtest"));
}
TEST(FlatExprBuilderTest, ExprUnset) {
Expr expr;
SourceInfo source_info;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("Invalid empty expression")));
}
TEST(FlatExprBuilderTest, RuntimeExtensionsError) {
Expr expr;
SourceInfo source_info;
auto* ext = source_info.add_extensions();
ext->set_id("ext1");
ext->add_affected_components(
cel::expr::SourceInfo_Extension_Component_COMPONENT_RUNTIME);
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("unsupported CEL extension: ext1")));
}
TEST(FlatExprBuilderTest, ConstValueUnset) {
Expr expr;
SourceInfo source_info;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
// Create an empty constant expression to ensure that it triggers an error.
expr.mutable_const_expr();
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("unspecified constant")));
}
TEST(FlatExprBuilderTest, MapKeyValueUnset) {
Expr expr;
SourceInfo source_info;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
// Don't set either the key or the value for the map creation step.
auto* entry = expr.mutable_struct_expr()->add_entries();
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("Map entry missing key")));
// Set the entry key, but not the value.
entry->mutable_map_key()->mutable_const_expr()->set_bool_value(true);
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("Map entry missing value")));
}
TEST(FlatExprBuilderTest, MessageFieldValueUnset) {
Expr expr;
SourceInfo source_info;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
// Don't set either the field or the value for the message creation step.
auto* create_message = expr.mutable_struct_expr();
create_message->set_message_name("google.protobuf.Value");
auto* entry = create_message->add_entries();
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("Struct field missing name")));
// Set the entry field, but not the value.
entry->set_field_key("bool_value");
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("Struct field missing value")));
}
TEST(FlatExprBuilderTest, BinaryCallTooManyArguments) {
Expr expr;
SourceInfo source_info;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
auto* call = expr.mutable_call_expr();
call->set_function(builtin::kAnd);
call->mutable_target()->mutable_const_expr()->set_string_value("random");
call->add_args()->mutable_const_expr()->set_bool_value(false);
call->add_args()->mutable_const_expr()->set_bool_value(true);
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("Invalid argument count")));
}
TEST(FlatExprBuilderTest, TernaryCallTooManyArguments) {
Expr expr;
SourceInfo source_info;
auto* call = expr.mutable_call_expr();
call->set_function(builtin::kTernary);
call->mutable_target()->mutable_const_expr()->set_string_value("random");
call->add_args()->mutable_const_expr()->set_bool_value(false);
call->add_args()->mutable_const_expr()->set_int64_value(1);
call->add_args()->mutable_const_expr()->set_int64_value(2);
{
cel::RuntimeOptions options;
options.short_circuiting = true;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv(), options);
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("Invalid argument count")));
}
// Disable short-circuiting to ensure that a different visitor is used.
{
cel::RuntimeOptions options;
options.short_circuiting = false;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv(), options);
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("Invalid argument count")));
}
}
TEST(FlatExprBuilderTest, DelayedFunctionResolutionErrors) {
Expr expr;
SourceInfo source_info;
auto call_expr = expr.mutable_call_expr();
call_expr->set_function("concat");
auto arg1 = call_expr->add_args();
arg1->mutable_const_expr()->set_string_value("prefix");
auto arg2 = call_expr->add_args();
arg2->mutable_ident_expr()->set_name("value");
cel::RuntimeOptions options;
options.fail_on_warnings = false;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv(), options);
std::vector<absl::Status> warnings;
// Concat function not registered.
ASSERT_OK_AND_ASSIGN(
auto cel_expr, builder.CreateExpression(&expr, &source_info, &warnings));
std::string variable = "test";
Activation activation;
activation.InsertValue("value", CelValue::CreateString(&variable));
google::protobuf::Arena arena;
ASSERT_OK_AND_ASSIGN(CelValue result, cel_expr->Evaluate(activation, &arena));
ASSERT_TRUE(result.IsError());
EXPECT_THAT(result.ErrorOrDie()->message(),
Eq("No matching overloads found : concat(string, string)"));
ASSERT_THAT(warnings, testing::SizeIs(1));
EXPECT_EQ(warnings[0].code(), absl::StatusCode::kInvalidArgument);
EXPECT_THAT(std::string(warnings[0].message()),
testing::HasSubstr("No overloads provided"));
}
TEST(FlatExprBuilderTest, Shortcircuiting) {
Expr expr;
SourceInfo source_info;
auto call_expr = expr.mutable_call_expr();
call_expr->set_function("_||_");
auto arg1 = call_expr->add_args();
arg1->mutable_call_expr()->set_function("recorder1");
auto arg2 = call_expr->add_args();
arg2->mutable_call_expr()->set_function("recorder2");
Activation activation;
google::protobuf::Arena arena;
// Shortcircuiting on
{
cel::RuntimeOptions options;
options.short_circuiting = true;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv(), options);
auto builtin = RegisterBuiltinFunctions(builder.GetRegistry());
int count1 = 0;
int count2 = 0;
ASSERT_THAT(builder.GetRegistry()->Register(
std::make_unique<RecorderFunction>("recorder1", &count1)),
IsOk());
ASSERT_THAT(builder.GetRegistry()->Register(
std::make_unique<RecorderFunction>("recorder2", &count2)),
IsOk());
ASSERT_OK_AND_ASSIGN(auto cel_expr_on,
builder.CreateExpression(&expr, &source_info));
ASSERT_THAT(cel_expr_on->Evaluate(activation, &arena), IsOk());
EXPECT_THAT(count1, Eq(1));
EXPECT_THAT(count2, Eq(0));
}
// Shortcircuiting off.
{
cel::RuntimeOptions options;
options.short_circuiting = false;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv(), options);
auto builtin = RegisterBuiltinFunctions(builder.GetRegistry());
int count1 = 0;
int count2 = 0;
ASSERT_THAT(builder.GetRegistry()->Register(
std::make_unique<RecorderFunction>("recorder1", &count1)),
IsOk());
ASSERT_THAT(builder.GetRegistry()->Register(
std::make_unique<RecorderFunction>("recorder2", &count2)),
IsOk());
ASSERT_OK_AND_ASSIGN(auto cel_expr_off,
builder.CreateExpression(&expr, &source_info));
ASSERT_THAT(cel_expr_off->Evaluate(activation, &arena), IsOk());
EXPECT_THAT(count1, Eq(1));
EXPECT_THAT(count2, Eq(1));
}
}
TEST(FlatExprBuilderTest, ShortcircuitingComprehension) {
Expr expr;
SourceInfo source_info;
auto comprehension_expr = expr.mutable_comprehension_expr();
comprehension_expr->set_iter_var("x");
auto list_expr =
comprehension_expr->mutable_iter_range()->mutable_list_expr();
list_expr->add_elements()->mutable_const_expr()->set_int64_value(1);
list_expr->add_elements()->mutable_const_expr()->set_int64_value(2);
list_expr->add_elements()->mutable_const_expr()->set_int64_value(3);
comprehension_expr->set_accu_var("accu");
comprehension_expr->mutable_accu_init()->mutable_const_expr()->set_bool_value(
false);
comprehension_expr->mutable_loop_condition()
->mutable_const_expr()
->set_bool_value(false);
comprehension_expr->mutable_loop_step()->mutable_call_expr()->set_function(
"recorder_function1");
comprehension_expr->mutable_result()->mutable_const_expr()->set_bool_value(
false);
Activation activation;
google::protobuf::Arena arena;
// shortcircuiting on
{
cel::RuntimeOptions options;
options.short_circuiting = true;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv(), options);
auto builtin = RegisterBuiltinFunctions(builder.GetRegistry());
int count = 0;
ASSERT_THAT(
builder.GetRegistry()->Register(
std::make_unique<RecorderFunction>("recorder_function1", &count)),
IsOk());
ASSERT_OK_AND_ASSIGN(auto cel_expr_on,
builder.CreateExpression(&expr, &source_info));
ASSERT_THAT(cel_expr_on->Evaluate(activation, &arena), IsOk());
EXPECT_THAT(count, Eq(0));
}
// shortcircuiting off
{
cel::RuntimeOptions options;
options.short_circuiting = false;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv(), options);
auto builtin = RegisterBuiltinFunctions(builder.GetRegistry());
int count = 0;
ASSERT_THAT(
builder.GetRegistry()->Register(
std::make_unique<RecorderFunction>("recorder_function1", &count)),
IsOk());
ASSERT_OK_AND_ASSIGN(auto cel_expr_off,
builder.CreateExpression(&expr, &source_info));
ASSERT_THAT(cel_expr_off->Evaluate(activation, &arena), IsOk());
EXPECT_THAT(count, Eq(3));
}
}
TEST(FlatExprBuilderTest, IdentExprUnsetName) {
Expr expr;
SourceInfo source_info;
// An empty ident without the name set should error.
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(ident_expr {})", &expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("'name' must not be empty")));
}
TEST(FlatExprBuilderTest, SelectExprUnsetField) {
Expr expr;
SourceInfo source_info;
// An empty ident without the name set should error.
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(select_expr{
operand{ ident_expr {name: 'var'} }
})",
&expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("'field' must not be empty")));
}
TEST(FlatExprBuilderTest, SelectExprUnsetOperand) {
Expr expr;
SourceInfo source_info;
// An empty ident without the name set should error.
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(select_expr{
field: 'field'
operand { id: 1 }
})",
&expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("must specify an operand")));
}
TEST(FlatExprBuilderTest, ComprehensionExprUnsetAccuVar) {
Expr expr;
SourceInfo source_info;
// An empty ident without the name set should error.
ASSERT_TRUE(
google::protobuf::TextFormat::ParseFromString(R"(comprehension_expr{})", &expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("'accu_var' must not be empty")));
}
TEST(FlatExprBuilderTest, ComprehensionExprUnsetIterVar) {
Expr expr;
SourceInfo source_info;
// An empty ident without the name set should error.
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(
comprehension_expr{accu_var: "a"}
)",
&expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("'iter_var' must not be empty")));
}
TEST(FlatExprBuilderTest, ComprehensionExprUnsetAccuInit) {
Expr expr;
SourceInfo source_info;
// An empty ident without the name set should error.
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(
comprehension_expr{
accu_var: "a"
iter_var: "b"}
)",
&expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("'accu_init' must be set")));
}
TEST(FlatExprBuilderTest, ComprehensionExprUnsetLoopCondition) {
Expr expr;
SourceInfo source_info;
// An empty ident without the name set should error.
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(
comprehension_expr{
accu_var: 'a'
iter_var: 'b'
accu_init {
const_expr {bool_value: true}
}}
)",
&expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("'loop_condition' must be set")));
}
TEST(FlatExprBuilderTest, ComprehensionExprUnsetLoopStep) {
Expr expr;
SourceInfo source_info;
// An empty ident without the name set should error.
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(
comprehension_expr{
accu_var: 'a'
iter_var: 'b'
accu_init {
const_expr {bool_value: true}
}
loop_condition {
const_expr {bool_value: true}
}}
)",
&expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("'loop_step' must be set")));
}
TEST(FlatExprBuilderTest, ComprehensionExprUnsetResult) {
Expr expr;
SourceInfo source_info;
// An empty ident without the name set should error.
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(
comprehension_expr{
accu_var: 'a'
iter_var: 'b'
accu_init {
const_expr {bool_value: true}
}
loop_condition {
const_expr {bool_value: true}
}
loop_step {
const_expr {bool_value: false}
}}
)",
&expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("'result' must be set")));
}
TEST(FlatExprBuilderTest, MapComprehension) {
Expr expr;
SourceInfo source_info;
// {1: "", 2: ""}.all(x, x > 0)
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(
comprehension_expr {
iter_var: "k"
accu_var: "accu"
accu_init {
const_expr { bool_value: true }
}
loop_condition { ident_expr { name: "accu" } }
result { ident_expr { name: "accu" } }
loop_step {
call_expr {
function: "_&&_"
args {
ident_expr { name: "accu" }
}
args {
call_expr {
function: "_>_"
args { ident_expr { name: "k" } }
args { const_expr { int64_value: 0 } }
}
}
}
}
iter_range {
struct_expr {
entries {
map_key { const_expr { int64_value: 1 } }
value { const_expr { string_value: "" } }
}
entries {
map_key { const_expr { int64_value: 2 } }
value { const_expr { string_value: "" } }
}
}
}
})",
&expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
ASSERT_OK_AND_ASSIGN(auto cel_expr,
builder.CreateExpression(&expr, &source_info));
Activation activation;
google::protobuf::Arena arena;
ASSERT_OK_AND_ASSIGN(CelValue result, cel_expr->Evaluate(activation, &arena));
ASSERT_TRUE(result.IsBool());
EXPECT_TRUE(result.BoolOrDie());
}
TEST(FlatExprBuilderTest, InvalidContainer) {
Expr expr;
SourceInfo source_info;
// foo && bar
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(
call_expr {
function: "_&&_"
args {
ident_expr {
name: "foo"
}
}
args {
ident_expr {
name: "bar"
}
}
})",
&expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
builder.set_container(".bad");
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("container: '.bad'")));
builder.set_container("bad.");
EXPECT_THAT(builder.CreateExpression(&expr, &source_info).status(),
StatusIs(absl::StatusCode::kInvalidArgument,
HasSubstr("container: 'bad.'")));
}
TEST(FlatExprBuilderTest, ParsedNamespacedFunctionSupport) {
ASSERT_OK_AND_ASSIGN(ParsedExpr expr, parser::Parse("ext.XOr(a, b)"));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
builder.flat_expr_builder().AddAstTransform(
NewReferenceResolverExtension(ReferenceResolverOption::kAlways));
using FunctionAdapterT = FunctionAdapter<bool, bool, bool>;
ASSERT_OK(FunctionAdapterT::CreateAndRegister(
"ext.XOr", /*receiver_style=*/false,
[](google::protobuf::Arena*, bool a, bool b) { return a != b; },
builder.GetRegistry()));
ASSERT_OK_AND_ASSIGN(auto cel_expr, builder.CreateExpression(
&expr.expr(), &expr.source_info()));
google::protobuf::Arena arena;
Activation act1;
act1.InsertValue("a", CelValue::CreateBool(false));
act1.InsertValue("b", CelValue::CreateBool(true));
ASSERT_OK_AND_ASSIGN(CelValue result, cel_expr->Evaluate(act1, &arena));
EXPECT_THAT(result, test::IsCelBool(true));
Activation act2;
act2.InsertValue("a", CelValue::CreateBool(true));
act2.InsertValue("b", CelValue::CreateBool(true));
ASSERT_OK_AND_ASSIGN(result, cel_expr->Evaluate(act2, &arena));
EXPECT_THAT(result, test::IsCelBool(false));
}
TEST(FlatExprBuilderTest, ParsedNamespacedFunctionSupportWithContainer) {
ASSERT_OK_AND_ASSIGN(ParsedExpr expr, parser::Parse("XOr(a, b)"));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
builder.flat_expr_builder().AddAstTransform(
NewReferenceResolverExtension(ReferenceResolverOption::kAlways));
builder.set_container("ext");
using FunctionAdapterT = FunctionAdapter<bool, bool, bool>;
ASSERT_OK(FunctionAdapterT::CreateAndRegister(
"ext.XOr", /*receiver_style=*/false,
[](google::protobuf::Arena*, bool a, bool b) { return a != b; },
builder.GetRegistry()));
ASSERT_OK_AND_ASSIGN(auto cel_expr, builder.CreateExpression(
&expr.expr(), &expr.source_info()));
google::protobuf::Arena arena;
Activation act1;
act1.InsertValue("a", CelValue::CreateBool(false));
act1.InsertValue("b", CelValue::CreateBool(true));
ASSERT_OK_AND_ASSIGN(CelValue result, cel_expr->Evaluate(act1, &arena));
EXPECT_THAT(result, test::IsCelBool(true));
Activation act2;
act2.InsertValue("a", CelValue::CreateBool(true));
act2.InsertValue("b", CelValue::CreateBool(true));
ASSERT_OK_AND_ASSIGN(result, cel_expr->Evaluate(act2, &arena));
EXPECT_THAT(result, test::IsCelBool(false));
}
TEST(FlatExprBuilderTest, ParsedNamespacedFunctionResolutionOrder) {
ASSERT_OK_AND_ASSIGN(ParsedExpr expr, parser::Parse("c.d.Get()"));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
builder.flat_expr_builder().AddAstTransform(
NewReferenceResolverExtension(ReferenceResolverOption::kAlways));
builder.set_container("a.b");
using FunctionAdapterT = FunctionAdapter<bool>;
ASSERT_OK(FunctionAdapterT::CreateAndRegister(
"a.b.c.d.Get", /*receiver_style=*/false,
[](google::protobuf::Arena*) { return true; }, builder.GetRegistry()));
ASSERT_OK(FunctionAdapterT::CreateAndRegister(
"c.d.Get", /*receiver_style=*/false, [](google::protobuf::Arena*) { return false; },
builder.GetRegistry()));
ASSERT_OK((FunctionAdapter<bool, bool>::CreateAndRegister(
"Get",
/*receiver_style=*/true, [](google::protobuf::Arena*, bool) { return false; },
builder.GetRegistry())));
ASSERT_OK_AND_ASSIGN(auto cel_expr, builder.CreateExpression(
&expr.expr(), &expr.source_info()));
google::protobuf::Arena arena;
Activation act1;
ASSERT_OK_AND_ASSIGN(CelValue result, cel_expr->Evaluate(act1, &arena));
EXPECT_THAT(result, test::IsCelBool(true));
}
TEST(FlatExprBuilderTest,
ParsedNamespacedFunctionResolutionOrderParentContainer) {
ASSERT_OK_AND_ASSIGN(ParsedExpr expr, parser::Parse("c.d.Get()"));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
builder.flat_expr_builder().AddAstTransform(
NewReferenceResolverExtension(ReferenceResolverOption::kAlways));
builder.set_container("a.b");
using FunctionAdapterT = FunctionAdapter<bool>;
ASSERT_OK(FunctionAdapterT::CreateAndRegister(
"a.c.d.Get", /*receiver_style=*/false,
[](google::protobuf::Arena*) { return true; }, builder.GetRegistry()));
ASSERT_OK(FunctionAdapterT::CreateAndRegister(
"c.d.Get", /*receiver_style=*/false, [](google::protobuf::Arena*) { return false; },
builder.GetRegistry()));
ASSERT_OK((FunctionAdapter<bool, bool>::CreateAndRegister(
"Get",
/*receiver_style=*/true, [](google::protobuf::Arena*, bool) { return false; },
builder.GetRegistry())));
ASSERT_OK_AND_ASSIGN(auto cel_expr, builder.CreateExpression(
&expr.expr(), &expr.source_info()));
google::protobuf::Arena arena;
Activation act1;
ASSERT_OK_AND_ASSIGN(CelValue result, cel_expr->Evaluate(act1, &arena));
EXPECT_THAT(result, test::IsCelBool(true));
}
TEST(FlatExprBuilderTest,
ParsedNamespacedFunctionResolutionOrderExplicitGlobal) {
ASSERT_OK_AND_ASSIGN(ParsedExpr expr, parser::Parse(".c.d.Get()"));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
builder.flat_expr_builder().AddAstTransform(
NewReferenceResolverExtension(ReferenceResolverOption::kAlways));
builder.set_container("a.b");
using FunctionAdapterT = FunctionAdapter<bool>;
ASSERT_OK(FunctionAdapterT::CreateAndRegister(
"a.c.d.Get", /*receiver_style=*/false,
[](google::protobuf::Arena*) { return false; }, builder.GetRegistry()));
ASSERT_OK(FunctionAdapterT::CreateAndRegister(
"c.d.Get", /*receiver_style=*/false, [](google::protobuf::Arena*) { return true; },
builder.GetRegistry()));
ASSERT_OK((FunctionAdapter<bool, bool>::CreateAndRegister(
"Get",
/*receiver_style=*/true, [](google::protobuf::Arena*, bool) { return false; },
builder.GetRegistry())));
ASSERT_OK_AND_ASSIGN(auto cel_expr, builder.CreateExpression(
&expr.expr(), &expr.source_info()));
google::protobuf::Arena arena;
Activation act1;
ASSERT_OK_AND_ASSIGN(CelValue result, cel_expr->Evaluate(act1, &arena));
EXPECT_THAT(result, test::IsCelBool(true));
}
TEST(FlatExprBuilderTest, ParsedNamespacedFunctionResolutionOrderReceiverCall) {
ASSERT_OK_AND_ASSIGN(ParsedExpr expr, parser::Parse("e.Get()"));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
builder.flat_expr_builder().AddAstTransform(
NewReferenceResolverExtension(ReferenceResolverOption::kAlways));
builder.set_container("a.b");
using FunctionAdapterT = FunctionAdapter<bool>;
ASSERT_OK(FunctionAdapterT::CreateAndRegister(
"a.c.d.Get", /*receiver_style=*/false,
[](google::protobuf::Arena*) { return false; }, builder.GetRegistry()));
ASSERT_OK(FunctionAdapterT::CreateAndRegister(
"c.d.Get", /*receiver_style=*/false, [](google::protobuf::Arena*) { return false; },
builder.GetRegistry()));
ASSERT_OK((FunctionAdapter<bool, bool>::CreateAndRegister(
"Get",
/*receiver_style=*/true, [](google::protobuf::Arena*, bool) { return true; },
builder.GetRegistry())));
ASSERT_OK_AND_ASSIGN(auto cel_expr, builder.CreateExpression(
&expr.expr(), &expr.source_info()));
google::protobuf::Arena arena;
Activation act1;
act1.InsertValue("e", CelValue::CreateBool(false));
ASSERT_OK_AND_ASSIGN(CelValue result, cel_expr->Evaluate(act1, &arena));
EXPECT_THAT(result, test::IsCelBool(true));
}
TEST(FlatExprBuilderTest, ParsedNamespacedFunctionSupportDisabled) {
ASSERT_OK_AND_ASSIGN(ParsedExpr expr, parser::Parse("ext.XOr(a, b)"));
cel::RuntimeOptions options;
options.fail_on_warnings = false;
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv(), options);
std::vector<absl::Status> build_warnings;
builder.set_container("ext");
using FunctionAdapterT = FunctionAdapter<bool, bool, bool>;
ASSERT_OK(FunctionAdapterT::CreateAndRegister(
"ext.XOr", /*receiver_style=*/false,
[](google::protobuf::Arena*, bool a, bool b) { return a != b; },
builder.GetRegistry()));
ASSERT_OK_AND_ASSIGN(
auto cel_expr, builder.CreateExpression(&expr.expr(), &expr.source_info(),
&build_warnings));
google::protobuf::Arena arena;
Activation act1;
act1.InsertValue("a", CelValue::CreateBool(false));
act1.InsertValue("b", CelValue::CreateBool(true));
ASSERT_OK_AND_ASSIGN(CelValue result, cel_expr->Evaluate(act1, &arena));
EXPECT_THAT(result, test::IsCelError(StatusIs(absl::StatusCode::kUnknown,
HasSubstr("ext"))));
}
TEST(FlatExprBuilderTest, BasicCheckedExprSupport) {
CheckedExpr expr;
// foo && bar
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(
expr {
id: 1
call_expr {
function: "_&&_"
args {
id: 2
ident_expr {
name: "foo"
}
}
args {
id: 3
ident_expr {
name: "bar"
}
}
}
})",
&expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
ASSERT_OK_AND_ASSIGN(auto cel_expr, builder.CreateExpression(&expr));
Activation activation;
activation.InsertValue("foo", CelValue::CreateBool(true));
activation.InsertValue("bar", CelValue::CreateBool(true));
google::protobuf::Arena arena;
ASSERT_OK_AND_ASSIGN(CelValue result, cel_expr->Evaluate(activation, &arena));
ASSERT_TRUE(result.IsBool());
EXPECT_TRUE(result.BoolOrDie());
}
TEST(FlatExprBuilderTest, CheckedExprWithReferenceMap) {
CheckedExpr expr;
// `foo.var1` && `bar.var2`
ASSERT_TRUE(google::protobuf::TextFormat::ParseFromString(R"(
reference_map {
key: 2
value {
name: "foo.var1"
}
}
reference_map {
key: 4
value {
name: "bar.var2"
}
}
expr {
id: 1
call_expr {
function: "_&&_"
args {
id: 2
select_expr {
field: "var1"
operand {
id: 3
ident_expr {
name: "foo"
}
}
}
}
args {
id: 4
select_expr {
field: "var2"
operand {
ident_expr {
name: "bar"
}
}
}
}
}
})",
&expr));
CelExpressionBuilderFlatImpl builder(NewTestingRuntimeEnv());
builder.flat_expr_builder().AddAstTransform(
NewReferenceResolverExtension(ReferenceResolverOption::kCheckedOnly));
ASSERT_THAT(RegisterBuiltinFunctions(builder.GetRegistry()), IsOk());
ASSERT_OK_AND_ASSIGN(auto cel_expr, builder.CreateExpression(&expr));