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context.cpp
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/*
* Copyright (C) 2021 CESNET, https://photonics.cesnet.cz/
*
* Written by Václav Kubernát <kubernat@cesnet.cz>
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <doctest/doctest.h>
#include <fstream>
#include <libyang-cpp/Context.hpp>
#include <libyang-cpp/Utils.hpp>
#include "example_schema.hpp"
#include "pretty_printers.hpp"
#include "test_vars.hpp"
using namespace std::literals;
const auto valid_yin_model = R"(
<?xml version="1.0" encoding="UTF-8"?>
<module name="test"
xmlns="urn:ietf:params:xml:ns:yang:yin:1"
xmlns:t="http://example.com">
<namespace uri="http://example.com"/>
<prefix value="t"/>
</module>
)"s;
const auto valid_yang_model = R"(
module test {
namespace "http://example.com";
prefix "t";
leaf someLeaf {
type string;
}
}
)"s;
const auto imported_module = R"(
module importedModule {
namespace "http://example.com/importedModule";
prefix "ab";
leaf myLeaf {
type string;
}
}
)"s;
const auto model_with_import = R"(
module withImport {
namespace "http://example.com/withImport";
prefix "t";
import importedModule {
prefix "im";
}
leaf someLeaf {
type string;
}
}
)"s;
TEST_CASE("context")
{
std::optional<libyang::Context> ctx{std::in_place, std::nullopt, libyang::ContextOptions::NoYangLibrary | libyang::ContextOptions::DisableSearchCwd};
DOCTEST_SUBCASE("parseModule")
{
std::string mod;
libyang::SchemaFormat format;
DOCTEST_SUBCASE("valid")
{
DOCTEST_SUBCASE("yang")
{
mod = valid_yang_model;
format = libyang::SchemaFormat::YANG;
}
DOCTEST_SUBCASE("yin")
{
mod = valid_yin_model;
format = libyang::SchemaFormat::YIN;
}
REQUIRE(ctx->parseModule(mod, format).name() == "test");
REQUIRE(ctx->getModule("test", std::nullopt)->name() == "test");
}
DOCTEST_SUBCASE("invalid")
{
format = libyang::SchemaFormat::YANG;
mod = "blablabla";
REQUIRE_THROWS_WITH_AS(ctx->parseModule(mod, format), "Can't parse module: LY_EVALID", std::runtime_error);
}
}
DOCTEST_SUBCASE("Loading modules by name")
{
DOCTEST_SUBCASE("module exists")
{
ctx->setSearchDir(TESTS_DIR / "yang");
auto mod = ctx->loadModule("mod1", std::nullopt, {
"feature1",
"feature2"
});
REQUIRE(mod.name() == "mod1");
REQUIRE(mod.featureEnabled("feature1"));
REQUIRE(mod.featureEnabled("feature2"));
REQUIRE(!mod.featureEnabled("feature3"));
REQUIRE_THROWS(mod.featureEnabled("invalid"));
}
DOCTEST_SUBCASE("module does not exist")
{
REQUIRE_THROWS(ctx->loadModule("invalid"));
}
}
DOCTEST_SUBCASE("Get module extensions")
{
ctx->setSearchDir(TESTS_DIR / "yang");
auto modYangPatch = ctx->loadModule("ietf-yang-patch", std::nullopt);
auto modRestconf = ctx->getModule("ietf-restconf", "2017-01-26");
REQUIRE(modRestconf);
REQUIRE(modRestconf->name() == "ietf-restconf");
REQUIRE(!modRestconf->implemented());
REQUIRE_THROWS_WITH_AS(modRestconf->extensionInstances(), "Module \"ietf-restconf\" not implemented", libyang::Error);
REQUIRE_THROWS_WITH_AS(modRestconf->extensionInstance("yang-errors"), "Module \"ietf-restconf\" not implemented", libyang::Error);
modRestconf->setImplemented();
REQUIRE(modRestconf->implemented());
REQUIRE(modRestconf->extensionInstances().size() == 2);
REQUIRE(modRestconf->extensionInstances()[0].argument() == "yang-errors");
REQUIRE(modRestconf->extensionInstances()[0].definition().name() == "yang-data");
REQUIRE(modRestconf->extensionInstance("yang-errors").argument() == "yang-errors");
REQUIRE(modRestconf->extensionInstance("yang-errors").definition().name() == "yang-data");
REQUIRE(modRestconf->extensionInstances()[1].argument() == "yang-api");
REQUIRE(modRestconf->extensionInstances()[1].definition().name() == "yang-data");
REQUIRE(modRestconf->extensionInstance("yang-api").argument() == "yang-api");
REQUIRE(modRestconf->extensionInstance("yang-api").definition().name() == "yang-data");
REQUIRE_THROWS_WITH_AS(modRestconf->extensionInstance("yay"), "Extension \"yay\" not defined in module \"ietf-restconf\"", libyang::Error);
}
DOCTEST_SUBCASE("context lifetime")
{
ctx->parseModule(valid_yang_model, libyang::SchemaFormat::YANG);
DOCTEST_SUBCASE("Data nodes")
{
auto node = ctx->newPath("/test:someLeaf", "123");
ctx.reset();
// Node is still reachable.
REQUIRE(node.path() == "/test:someLeaf");
}
DOCTEST_SUBCASE("Modules")
{
auto mod = ctx->getModule("test", std::nullopt);
ctx.reset();
// Module is still reachable.
REQUIRE(mod->name() == "test");
}
}
DOCTEST_SUBCASE("Context::newPath2")
{
ctx->parseModule(example_schema2, libyang::SchemaFormat::YANG);
auto nodes = ctx->newPath2("/example-schema2:contWithTwoNodes/one", "1");
REQUIRE(nodes.createdNode->path() == "/example-schema2:contWithTwoNodes/one");
REQUIRE(nodes.createdParent->path() == "/example-schema2:contWithTwoNodes");
nodes = ctx->newPath2("/example-schema2:contWithTwoNodes");
REQUIRE(nodes.createdNode->path() == "/example-schema2:contWithTwoNodes");
REQUIRE(nodes.createdParent->path() == "/example-schema2:contWithTwoNodes");
}
DOCTEST_SUBCASE("Module::identities")
{
auto module = ctx->parseModule(example_schema, libyang::SchemaFormat::YANG);
auto identities = module.identities();
REQUIRE(identities.size() == 4);
REQUIRE(identities.at(0).name() == "food");
REQUIRE(identities.at(1).name() == "fruit");
REQUIRE(identities.at(2).name() == "pizza");
REQUIRE(identities.at(3).name() == "hawaii");
auto module4 = ctx->parseModule(example_schema4, libyang::SchemaFormat::YANG);
auto identities4 = module4.identities();
REQUIRE(identities4.size() == 3);
REQUIRE(identities4.at(0).name() == "pizza");
REQUIRE(identities4.at(1).name() == "carpaccio");
REQUIRE(identities4.at(2).name() == "another-carpaccio");
REQUIRE(identities.at(0) == identities.at(0));
REQUIRE(identities.at(0) != identities.at(1));
REQUIRE(identities.at(2) != identities4.at(0)); // it's a different pizza
std::set<libyang::Identity, libyang::SomeOrder> allIdentities;
for (const auto& mod : {module, module4}) {
for (const auto& identity : mod.identities()) {
allIdentities.insert(identity);
}
}
std::vector<std::string> expectedNames {
{"example-schema:food"},
{"example-schema:fruit"},
{"example-schema:hawaii"},
{"example-schema:pizza"},
{"example-schema4:another-carpaccio"},
{"example-schema4:carpaccio"},
{"example-schema4:pizza"},
};
std::vector<std::string> actual;
std::transform(allIdentities.begin(), allIdentities.end(), std::back_inserter(actual), libyang::qualifiedName);
REQUIRE(actual == expectedNames);
}
DOCTEST_SUBCASE("Module::features")
{
std::vector<std::string> expectedAllFeatures{
"feature1",
"feature2",
"feature3",
};
std::vector<std::string> expectedEnabledFeatures;
std::optional<libyang::Module> mod;
auto filename = TESTS_DIR / "yang" / "mod1.yang";
auto yangContent = [&filename]() {
std::ifstream ifs(filename);
std::istreambuf_iterator<char> begin(ifs), end;
return std::string(begin, end);
}();
DOCTEST_SUBCASE("feature subset")
{
expectedEnabledFeatures = {
"feature1",
"feature2",
};
DOCTEST_SUBCASE("loadModule")
{
ctx->setSearchDir(TESTS_DIR / "yang");
mod = ctx->loadModule("mod1", std::nullopt, expectedEnabledFeatures);
}
DOCTEST_SUBCASE("parseModule path")
{
mod = ctx->parseModule(filename, libyang::SchemaFormat::YANG, expectedEnabledFeatures);
}
DOCTEST_SUBCASE("parseModule data")
{
mod = ctx->parseModule(yangContent, libyang::SchemaFormat::YANG, expectedEnabledFeatures);
}
}
DOCTEST_SUBCASE("wildcarded features")
{
expectedEnabledFeatures = {
"feature1",
"feature2",
"feature3",
};
DOCTEST_SUBCASE("loadModule")
{
ctx->setSearchDir(TESTS_DIR / "yang");
mod = ctx->loadModule("mod1", std::nullopt, {"*"});
}
DOCTEST_SUBCASE("parseModule path")
{
mod = ctx->parseModule(filename, libyang::SchemaFormat::YANG, {"*"});
}
DOCTEST_SUBCASE("parseModule data")
{
mod = ctx->parseModule(yangContent, libyang::SchemaFormat::YANG, {"*"});
}
}
DOCTEST_SUBCASE("no features")
{
DOCTEST_SUBCASE("loadModule")
{
ctx->setSearchDir(TESTS_DIR / "yang");
mod = ctx->loadModule("mod1", std::nullopt, {});
}
DOCTEST_SUBCASE("parseModule path")
{
mod = ctx->parseModule(filename, libyang::SchemaFormat::YANG, {});
}
DOCTEST_SUBCASE("parseModule data")
{
mod = ctx->parseModule(yangContent, libyang::SchemaFormat::YANG, {});
}
}
std::vector<std::string> allFeatures, enabledFeatures;
REQUIRE(!!mod);
for (const auto& feature : mod->features()) {
allFeatures.emplace_back(feature.name());
if (feature.isEnabled()) {
enabledFeatures.emplace_back(feature.name());
}
}
REQUIRE(allFeatures == expectedAllFeatures);
REQUIRE(enabledFeatures == expectedEnabledFeatures);
}
DOCTEST_SUBCASE("Module::setImplemented")
{
ctx->setSearchDir(TESTS_DIR / "yang");
auto mod = ctx->loadModule("mod1", std::nullopt, {});
REQUIRE(!mod.featureEnabled("feature1"));
REQUIRE(!mod.featureEnabled("feature2"));
mod.setImplemented({{"feature1"}});
REQUIRE(mod.featureEnabled("feature1"));
REQUIRE(!mod.featureEnabled("feature2"));
mod.setImplemented();
REQUIRE(mod.featureEnabled("feature1"));
REQUIRE(!mod.featureEnabled("feature2"));
mod.setImplemented(libyang::AllFeatures{});
REQUIRE(mod.featureEnabled("feature1"));
REQUIRE(mod.featureEnabled("feature2"));
REQUIRE(mod.featureEnabled("feature3"));
REQUIRE_THROWS_AS(mod.setImplemented({{"nonexisting"}}), libyang::ErrorWithCode);
}
DOCTEST_SUBCASE("Context::modules")
{
ctx->setSearchDir(TESTS_DIR / "yang");
ctx->loadModule("mod1", std::nullopt, {});
ctx->parseModule(valid_yang_model, libyang::SchemaFormat::YANG);
auto modules = ctx->modules();
REQUIRE(modules.size() == 8);
REQUIRE(modules.at(0).name() == "ietf-yang-metadata");
REQUIRE(modules.at(0).ns() == "urn:ietf:params:xml:ns:yang:ietf-yang-metadata");
REQUIRE(modules.at(1).name() == "yang");
REQUIRE(modules.at(1).ns() == "urn:ietf:params:xml:ns:yang:1");
REQUIRE(modules.at(2).name() == "ietf-inet-types");
REQUIRE(modules.at(2).ns() == "urn:ietf:params:xml:ns:yang:ietf-inet-types");
REQUIRE(modules.at(3).name() == "ietf-yang-types");
REQUIRE(modules.at(3).ns() == "urn:ietf:params:xml:ns:yang:ietf-yang-types");
REQUIRE(modules.at(4).name() == "ietf-yang-schema-mount");
REQUIRE(modules.at(4).ns() == "urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount");
REQUIRE(modules.at(5).name() == "ietf-yang-structure-ext");
REQUIRE(modules.at(5).ns() == "urn:ietf:params:xml:ns:yang:ietf-yang-structure-ext");
REQUIRE(modules.at(6).name() == "mod1");
REQUIRE(modules.at(6).ns() == "http://example.com");
REQUIRE(*modules.at(6).revision() == "2021-11-15");
REQUIRE(modules.at(7).name() == "test");
REQUIRE(modules.at(7).ns() == "http://example.com");
REQUIRE(modules.at(7).revision() == std::nullopt);
}
DOCTEST_SUBCASE("Context::registerModuleCallback")
{
auto numCalled = 0;
ctx->registerModuleCallback([&numCalled](std::string_view modName, auto, auto, auto) -> std::optional<libyang::ModuleInfo> {
numCalled++;
if (modName == "example-schema") {
return libyang::ModuleInfo{
.data = example_schema,
.format = libyang::SchemaFormat::YANG
};
}
return std::nullopt;
});
REQUIRE(ctx->loadModule("example-schema").name() == "example-schema");
REQUIRE_THROWS_AS(ctx->loadModule("doesnt-exist"), libyang::Error);
REQUIRE(numCalled == 2);
}
DOCTEST_SUBCASE("Implemented modules")
{
ctx->registerModuleCallback([](std::string_view modName, auto, auto, auto) -> std::optional<libyang::ModuleInfo> {
if (modName == "withImport") {
return libyang::ModuleInfo{
.data = model_with_import,
.format = libyang::SchemaFormat::YANG
};
}
if (modName == "importedModule") {
return libyang::ModuleInfo{
.data = imported_module,
.format = libyang::SchemaFormat::YANG
};
}
return std::nullopt;
});
REQUIRE(ctx->loadModule("withImport").implemented());
REQUIRE(!ctx->getModule("importedModule", std::nullopt)->implemented());
REQUIRE(ctx->getModuleImplemented("withImport").has_value());
REQUIRE(!ctx->getModuleImplemented("importedModule").has_value());
REQUIRE(ctx->getModuleLatest("withImport"));
REQUIRE(ctx->getModuleLatest("importedModule"));
}
DOCTEST_SUBCASE("Context::parseData")
{
ctx->parseModule(example_schema2, libyang::SchemaFormat::YANG);
auto parsed = ctx->parseData("{}"s, libyang::DataFormat::JSON);
REQUIRE(parsed.has_value());
REQUIRE(parsed->schema().path() == "/ietf-yang-schema-mount:schema-mounts");
}
DOCTEST_SUBCASE("Context::parseData")
{
ctx->parseModule(example_schema, libyang::SchemaFormat::YANG);
auto data = ctx->parseData(TESTS_DIR / "test_data.json", libyang::DataFormat::JSON);
REQUIRE(data);
REQUIRE(data->findPath("/example-schema:leafInt8")->asTerm().valueStr() == "-43");
}
DOCTEST_SUBCASE("Log level")
{
REQUIRE(libyang::setLogLevel(libyang::LogLevel::Error) == libyang::LogLevel::Debug);
REQUIRE(libyang::setLogLevel(libyang::LogLevel::Warning) == libyang::LogLevel::Error);
REQUIRE(libyang::setLogLevel(libyang::LogLevel::Verbose) == libyang::LogLevel::Warning);
}
DOCTEST_SUBCASE("Error info")
{
std::vector<libyang::ErrorInfo> expected;
DOCTEST_SUBCASE("No errors")
{
}
DOCTEST_SUBCASE("Trying to parse invalid module")
{
REQUIRE_THROWS(ctx->parseModule("invalid module"s, libyang::SchemaFormat::YANG));
expected = {
libyang::ErrorInfo {
.appTag = std::nullopt,
.level = libyang::LogLevel::Error,
.message = "Invalid character sequence \"invalid\", expected a keyword.",
.code = libyang::ErrorCode::ValidationFailure,
.path = "Line number 1.",
.validationCode = libyang::ValidationErrorCode::Syntax,
}
};
}
DOCTEST_SUBCASE("Data restriction failure - multiple errors")
{
ctx->parseModule(example_schema, libyang::SchemaFormat::YANG);
DOCTEST_SUBCASE("Store only last error")
{
libyang::setLogOptions(libyang::LogOptions::Log | libyang::LogOptions::StoreLast);
expected = {
libyang::ErrorInfo {
.appTag = std::nullopt,
.level = libyang::LogLevel::Error,
.message = "Value \"9001\" is out of type int8 min/max bounds.",
.code = libyang::ErrorCode::ValidationFailure,
.path = "Schema location \"/example-schema:leafInt8\".",
.validationCode = libyang::ValidationErrorCode::Data,
}
};
}
DOCTEST_SUBCASE("Store multiple errors")
{
libyang::setLogOptions(libyang::LogOptions::Log | libyang::LogOptions::Store);
expected = {
libyang::ErrorInfo {
.appTag = std::nullopt,
.level = libyang::LogLevel::Error,
.message = "Invalid type int8 empty value.",
.code = libyang::ErrorCode::ValidationFailure,
.path = "Schema location \"/example-schema:leafInt8\".",
.validationCode = libyang::ValidationErrorCode::Data,
},
libyang::ErrorInfo {
.appTag = std::nullopt,
.level = libyang::LogLevel::Error,
.message = "Value \"9001\" is out of type int8 min/max bounds.",
.code = libyang::ErrorCode::ValidationFailure,
.path = "Schema location \"/example-schema:leafInt8\".",
.validationCode = libyang::ValidationErrorCode::Data,
}
};
}
REQUIRE_THROWS(ctx->newPath("/example-schema:leafInt8"));
REQUIRE_THROWS(ctx->newPath("/example-schema:leafInt8", "9001"));
DOCTEST_SUBCASE("clear errors")
{
ctx->cleanAllErrors();
expected = {};
}
}
REQUIRE(ctx->getErrors() == expected);
}
DOCTEST_SUBCASE("schema printing")
{
std::optional<libyang::Context> ctx_pp{std::in_place, std::nullopt, libyang::ContextOptions::NoYangLibrary | libyang::ContextOptions::DisableSearchCwd | libyang::ContextOptions::SetPrivParsed};
auto mod = ctx_pp->parseModule(type_module, libyang::SchemaFormat::YANG);
REQUIRE(mod.printStr(libyang::SchemaOutputFormat::Tree) == R"(module: type_module
+--rw anydataBasic? anydata
+--rw anydataWithMandatoryChild anydata
+--rw anyxmlBasic? anyxml
+--rw anyxmlWithMandatoryChild anyxml
+--rw leafBinary? binary
+--rw leafBits? bits
+--rw leafEnum? enumeration
+--rw leafEnum2? enumeration
+--rw leafNumber? int32
+--rw leafRef? -> /custom-prefix:listAdvancedWithOneKey/lol
+--rw leafRefRelaxed? -> /custom-prefix:listAdvancedWithOneKey/lol
+--rw leafString? string
+--rw leafUnion? union
+--rw meal? identityref
+--ro leafWithConfigFalse? string
+--rw leafWithDefaultValue? string
+--rw leafWithDescription? string
+--rw leafWithMandatoryTrue string
x--rw leafWithStatusDeprecated? string
o--rw leafWithStatusObsolete? string
+--rw leafWithUnits? int32
+--rw iid-valid? instance-identifier
+--rw iid-relaxed? instance-identifier
+--rw leafListBasic* string
+--rw leafListWithMinMaxElements* int32
+--rw leafListWithUnits* int32
+--rw listBasic* [primary-key]
| +--rw primary-key string
+--rw listAdvancedWithOneKey* [lol]
| +--rw lol string
| +--rw notKey1? string
| +--rw notKey2? string
| +--rw notKey3? binary
| +--rw notKey4? binary
+--rw listAdvancedWithTwoKey* [first second]
| +--rw first string
| +--rw second string
+--rw listWithMinMaxElements* [primary-key]
| +--rw primary-key string
+--rw numeric
| +--rw i8? int8
| +--rw i16? int16
| +--rw i32? int32
| +--rw i64? int64
| +--rw deci? decimal64
| +--rw deci1? decimal64
| +--rw u8? uint8
| +--rw u16? uint16
| +--rw u32? uint32
| +--rw u64? uint64
+--rw container
| +--rw x
| | +--rw x1? string
| | +--rw x2? string
| | +---x aaa
| +--rw y
| +--rw z
| +--rw z1? string
+--rw containerWithMandatoryChild
+--rw leafWithMandatoryTrue string
)");
// the actual string is not preserved, stuff is reformatted
REQUIRE(mod.printStr(libyang::SchemaOutputFormat::Yang).substr(0, 131) == R"(module type_module {
yang-version 1.1;
namespace "http://example.com/custom-prefix";
prefix custom-prefix;
identity food;
)");
REQUIRE(mod.printStr(libyang::SchemaOutputFormat::CompiledYang).substr(0, 130) == R"(module type_module {
namespace "http://example.com/custom-prefix";
prefix custom-prefix;
identity food {
derived fruit;)");
REQUIRE(mod.printStr(libyang::SchemaOutputFormat::Yin).substr(0, 333) == R"(<?xml version="1.0" encoding="UTF-8"?>
<module name="type_module"
xmlns="urn:ietf:params:xml:ns:yang:yin:1"
xmlns:custom-prefix="http://example.com/custom-prefix">
<yang-version value="1.1"/>
<namespace uri="http://example.com/custom-prefix"/>
<prefix value="custom-prefix"/>
<identity name="food"/>
<identi)");
}
DOCTEST_SUBCASE("submodules")
{
ctx->setSearchDir(TESTS_DIR / "yang");
ctx->loadModule("root-mod");
auto rootMod = ctx->getModule("root-mod", std::nullopt);
REQUIRE(rootMod);
REQUIRE(rootMod->name() == "root-mod");
auto subModNoRevs = ctx->getSubmodule("root-submod-no-revs", std::nullopt);
REQUIRE(subModNoRevs);
REQUIRE(subModNoRevs->name() == "root-submod-no-revs");
REQUIRE(subModNoRevs->module().name() == rootMod->name());
auto subModRevs = ctx->getSubmodule("root-submod-revs", "2022-11-11");
REQUIRE(subModRevs);
REQUIRE(subModRevs->name() == "root-submod-revs");
REQUIRE(subModRevs->module().name() == rootMod->name());
REQUIRE(!ctx->getSubmodule("root-mod", std::nullopt));
REQUIRE(!ctx->getModule("root-submod-no-revs", std::nullopt));
REQUIRE(subModNoRevs->printStr(libyang::SchemaOutputFormat::Yang) == R"(submodule root-submod-no-revs {
belongs-to root-mod {
prefix rm;
}
leaf r-s {
type string;
}
}
)");
}
}
TEST_CASE("decimal64")
{
using namespace libyang;
REQUIRE(std::string(0_decimal64) == "0.0");
REQUIRE(std::string(123_decimal64) == "123.0");
REQUIRE(std::string(123.0_decimal64) == "123.0");
REQUIRE(std::string(123.00_decimal64) == "123.00");
REQUIRE(std::string(123.000_decimal64) == "123.000");
REQUIRE(std::string(123.987_decimal64) == "123.987");
REQUIRE(std::string(1.000000000000000000_decimal64) == "1.000000000000000000");
REQUIRE(std::string(-1.000000000000000000_decimal64) == "-1.000000000000000000");
REQUIRE(std::string(-922337203685477580.7_decimal64) == "-922337203685477580.7");
REQUIRE(std::string(-922337203685477580.8_decimal64) == "-922337203685477580.8");
REQUIRE(std::string(922337203685477580.7_decimal64) == "922337203685477580.7");
REQUIRE(std::string(-92233720368547758.08_decimal64) == "-92233720368547758.08");
REQUIRE(std::string(92233720368547758.07_decimal64) == "92233720368547758.07");
REQUIRE(std::string(-92.23372036854775808_decimal64) == "-92.23372036854775808");
REQUIRE(std::string(92.23372036854775807_decimal64) == "92.23372036854775807");
REQUIRE(std::string(-9.223372036854775808_decimal64) == "-9.223372036854775808");
REQUIRE(std::string(9.223372036854775807_decimal64) == "9.223372036854775807");
}