Function TEST_P

extensions/formatting_test.cc:65–97

Check that formatted floating points are reversible.

// Check that formatted floating points are reversible.
TEST_P(StringFormatLimitsTest, FormatLimits) {
  google::protobuf::Arena arena;
  const RuntimeOptions options;
  ASSERT_OK_AND_ASSIGN(auto builder,
                       CreateStandardRuntimeBuilder(
                           internal::GetTestingDescriptorPool(), options));
  ASSERT_THAT(
      RegisterStringFormattingFunctions(builder.function_registry(), options),
      IsOk());

  ASSERT_OK_AND_ASSIGN(auto runtime, std::move(builder).Build());

  ASSERT_OK_AND_ASSIGN(ParsedExpr expr,
                       Parse(GetParam(), "<input>", ParserOptions{}));
  ASSERT_OK_AND_ASSIGN(std::unique_ptr<Program> program,
                       ProtobufRuntimeAdapter::CreateProgram(*runtime, expr));
  Activation activation;

  static_assert(std::numeric_limits<double>::min_exponent == -1021);
  for (double x : {
           0x1p-1021,
           0x3p-1021,
           std::numeric_limits<double>::epsilon() * 0x1p-3,
           std::numeric_limits<double>::epsilon() * 0x7p-3,
           1.1 / 7.0 * 1e-101,
           1.2 / 7.0 * 1e-101,
       }) {
    activation.InsertOrAssignValue("x", DoubleValue(x));
    ASSERT_OK_AND_ASSIGN(Value value, program->Evaluate(&arena, activation));
    ASSERT_TRUE(value.Is<BoolValue>());
    EXPECT_TRUE(value.GetBool().NativeValue());
  }
}

TEST(StringFormatLimitsTest, MaxPrecisionOption) {
  google::protobuf::Arena arena;