chore(3p/nix): unvendor tvix 0.1 r/4098

Nothing is using this now, and we'll likely never pick this up again,
but we learned a lot in the process.

Every now and then this breaks in some bizarre way on channel bumps
and it's just a waste of time to maintain that.

Change-Id: Idcf2f5acd4ca7070ce18d7149cbfc0d967dc0a44
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5632
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: lukegb <lukegb@tvl.fyi>
Autosubmit: tazjin <tazjin@tvl.su>

1 files changed, 0 insertions, 290 deletions

diff --git a/third_party/nix/src/tests/language-tests.cc b/third_party/nix/src/tests/language-tests.cc
deleted file mode 100644
index 46e8c6ea80f7..000000000000
--- a/third_party/nix/src/tests/language-tests.cc
+++ /dev/null
@@ -1,290 +0,0 @@
-// This file defines the language test suite. Language tests are run
-// by evaluating a small snippet of Nix code (against a fake store),
-// serialising it to a string and comparing that to a known output.
-//
-// This test suite is a port of the previous language integration test
-// suite, and it's previous structure is retained.
-//
-// Test cases are written in nix files under lang/, following one of
-// four possible filename patterns which trigger different behaviours:
-//
-// 1. parse-fail-*.nix: These files contain expressions which should
-//    cause a parser failure.
-//
-// 2. parse-okay-*.nix: These files contain expressions which should
-//    parse fine.
-//
-// 3. eval-fail-*.nix: These files contain expressions which should
-//    parse, but fail to evaluate.
-//
-// 4. eval-okay-*.nix: These files contain expressions which should
-//    parse and evaluate fine. They have accompanying .exp files which
-//    contain the expected string representation of the evaluation.
-
-#include <algorithm>
-#include <filesystem>
-#include <fstream>
-#include <iostream>
-#include <iterator>
-#include <memory>
-#include <optional>
-#include <sstream>
-#include <string>
-
-#include <absl/strings/ascii.h>
-#include <absl/strings/match.h>
-#include <absl/strings/str_cat.h>
-#include <absl/strings/str_split.h>
-#include <absl/strings/string_view.h>
-#include <glog/logging.h>
-#include <gtest/gtest-param-test.h>
-#include <gtest/gtest.h>
-#include <gtest/internal/gtest-param-util.h>
-
-#include "libexpr/eval-inline.hh"
-#include "libexpr/eval.hh"
-#include "libexpr/nixexpr.hh"
-#include "nix_config.h"
-#include "tests/dummy-store.hh"
-#include "tests/store-util.hh"
-
-namespace nix::tests {
-namespace {
-
-// List all the language test .nix files matching the given prefix.
-std::vector<std::filesystem::path> TestFilesFor(absl::string_view prefix) {
-  std::vector<std::filesystem::path> matching_files;
-
-  auto dir_iter =
-      std::filesystem::directory_iterator(NIX_SRC_DIR "/src/tests/lang");
-
-  for (auto& entry : dir_iter) {
-    if (!entry.is_regular_file()) {
-      continue;
-    }
-
-    auto filename = entry.path().filename().string();
-    if (absl::StartsWith(filename, prefix) &&
-        absl::EndsWith(filename, ".nix")) {
-      matching_files.push_back(entry.path());
-    }
-  }
-
-  std::sort(matching_files.begin(), matching_files.end());
-  return matching_files;
-}
-
-// Construct a test name from a path parameter, re-casing its name to
-// PascalCase. Googletest only accepts alphanumeric test-names, but
-// the file names are in kebab-case.
-std::string TestNameFor(
-    const testing::TestParamInfo<std::filesystem::path>& info) {
-  std::string name;
-
-  for (auto part :
-       absl::StrSplit(info.param.stem().string(), '-', absl::SkipEmpty())) {
-    std::string part_owned(part);
-    part_owned[0] = absl::ascii_toupper(part_owned[0]);
-    absl::StrAppend(&name, part_owned);
-  }
-
-  return name;
-}
-
-// Load the expected output of a given test as a string.
-std::string ExpectedOutputFor(absl::string_view stem) {
-  std::filesystem::path path(
-      absl::StrCat(NIX_SRC_DIR, "/src/tests/lang/", stem, ".exp"));
-
-  EXPECT_TRUE(std::filesystem::exists(path))
-      << stem << ": expected output file should exist";
-
-  std::ifstream input(path);
-  std::stringstream buffer;
-  buffer << input.rdbuf();
-  return std::string(absl::StripTrailingAsciiWhitespace(buffer.str()));
-}
-
-}  // namespace
-
-using nix::tests::DummyStore;
-
-class NixEnvironment : public testing::Environment {
- public:
-  void SetUp() override {
-    google::InitGoogleLogging("--logtostderr=false");
-    nix::expr::InitGC();
-  }
-};
-
-::testing::Environment* const nix_env =
-    ::testing::AddGlobalTestEnvironment(new NixEnvironment);
-
-class ParserFailureTest : public testing::TestWithParam<std::filesystem::path> {
-};
-
-// Test pattern for files that should fail to parse.
-TEST_P(ParserFailureTest, Fails) {
-  std::shared_ptr<Store> store = std::make_shared<DummyStore>();
-  EvalState state({}, ref<Store>(store));
-  auto path = GetParam();
-
-  // There are multiple types of exceptions that the parser can throw,
-  // and the tests don't define which one they expect, so we need to
-  // allow all of these - but fail on other errors.
-  try {
-    state.parseExprFromFile(GetParam().string());
-    FAIL() << path.stem().string() << ": parsing should not succeed";
-  } catch (ParseError e) {
-    SUCCEED();
-  } catch (UndefinedVarError e) {
-    SUCCEED();
-  } catch (const std::exception& e) {
-    FAIL() << path.stem().string()
-           << ": unexpected parser exception: " << e.what();
-  }
-}
-
-INSTANTIATE_TEST_SUITE_P(Parser, ParserFailureTest,
-                         testing::ValuesIn(TestFilesFor("parse-fail-")),
-                         TestNameFor);
-
-class ParserSuccessTest : public testing::TestWithParam<std::filesystem::path> {
-};
-
-// Test pattern for files that should parse successfully.
-TEST_P(ParserSuccessTest, Parses) {
-  std::shared_ptr<Store> store = std::make_shared<DummyStore>();
-  EvalState state({}, ref<Store>(store));
-  auto path = GetParam();
-
-  EXPECT_NO_THROW(state.parseExprFromFile(GetParam().string()))
-      << path.stem().string() << ": parsing should succeed";
-
-  SUCCEED();
-}
-
-INSTANTIATE_TEST_SUITE_P(Parser, ParserSuccessTest,
-                         testing::ValuesIn(TestFilesFor("parse-okay-")),
-                         TestNameFor);
-
-class EvalFailureTest : public testing::TestWithParam<std::filesystem::path> {};
-
-// Test pattern for files that should fail to evaluate.
-TEST_P(EvalFailureTest, Fails) {
-  std::shared_ptr<Store> store = std::make_shared<DummyStore>();
-  EvalState state({}, ref<Store>(store));
-  auto path = GetParam();
-
-  Expr* expr = nullptr;
-  EXPECT_NO_THROW(expr = state.parseExprFromFile(GetParam().string()))
-      << path.stem().string() << ": should parse successfully";
-
-  // Again, there are multiple expected exception types and the tests
-  // don't specify which ones they are looking for.
-  try {
-    Value result;
-    state.eval(expr, result);
-    state.forceValue(result);
-    std::cout << result;
-    FAIL() << path.stem().string() << ": evaluating should not succeed";
-  } catch (AssertionError e) {
-    SUCCEED();
-  } catch (EvalError e) {
-    SUCCEED();
-  } catch (SysError e) {
-    SUCCEED();
-  } catch (ParseError /* sic! */ e) {
-    SUCCEED();
-  } catch (const std::exception& e) {
-    FAIL() << path.stem().string()
-           << ": unexpected evaluator exception: " << e.what();
-  }
-}
-
-INSTANTIATE_TEST_SUITE_P(Eval, EvalFailureTest,
-                         testing::ValuesIn(TestFilesFor("eval-fail-")),
-                         TestNameFor);
-
-class EvalSuccessTest : public testing::TestWithParam<std::filesystem::path> {};
-
-// Test pattern for files that should evaluate successfully.
-TEST_P(EvalSuccessTest, Succeeds) {
-  std::shared_ptr<Store> store = std::make_shared<DummyStore>();
-  EvalState state({}, ref<Store>(store));
-  auto path = GetParam();
-
-  Expr* expr = nullptr;
-  ASSERT_NO_THROW(expr = state.parseExprFromFile(GetParam().string()))
-      << path.stem().string() << ": should parse successfully";
-
-  Value result;
-
-  ASSERT_NO_THROW({
-    state.eval(expr, result);
-    state.forceValueDeep(result);
-  }) << path.stem().string()
-     << ": should evaluate successfully";
-
-  auto expected = ExpectedOutputFor(path.stem().string());
-  std::ostringstream value_str;
-  value_str << result;
-
-  EXPECT_EQ(expected, value_str.str()) << "evaluator output should match";
-}
-
-INSTANTIATE_TEST_SUITE_P(Eval, EvalSuccessTest,
-                         testing::ValuesIn(TestFilesFor("eval-okay-")),
-                         TestNameFor);
-
-class BlankStoreTest : public nix::StoreTest {
-  virtual void TestBody() override{};
-};
-
-class EvalStoreSuccessTest
-    : public testing::TestWithParam<std::filesystem::path> {
- public:
-  virtual void TearDown() { store_test_.TearDown(); }
-
-  absl::StatusOr<std::unique_ptr<nix::LocalStore>> OpenTemporaryStore() {
-    return store_test_.OpenTemporaryStore();
-  }
-
- private:
-  BlankStoreTest store_test_;
-};
-
-// Test pattern for files that should evaluate successfully but require a real
-// store.
-TEST_P(EvalStoreSuccessTest, Succeeds) {
-  absl::StatusOr<std::unique_ptr<nix::LocalStore>> store_ =
-      OpenTemporaryStore();
-  CHECK(store_.ok()) << "failed to open temporary store";
-  ref<Store> store = ref<Store>(store_->release());
-  EvalState state({}, store);
-  auto path = GetParam();
-
-  Expr* expr = nullptr;
-  ASSERT_NO_THROW(expr = state.parseExprFromFile(GetParam().string()))
-      << path.stem().string() << ": should parse successfully";
-
-  Value result;
-
-  ASSERT_NO_THROW({
-    state.eval(expr, result);
-    state.forceValueDeep(result);
-  }) << path.stem().string()
-     << ": should evaluate successfully";
-
-  auto expected = ExpectedOutputFor(path.stem().string());
-  std::ostringstream value_str;
-  value_str << result;
-
-  EXPECT_EQ(expected, value_str.str()) << "evaluator output should match";
-}
-
-INSTANTIATE_TEST_SUITE_P(Eval, EvalStoreSuccessTest,
-                         testing::ValuesIn(TestFilesFor("evalstore-okay-")),
-                         TestNameFor);
-
-}  // namespace nix::tests