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tests/unit/libexpr: Enable nix_store_realise test, and add docs

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This commit is contained in:
Robert Hensing 2024-04-07 21:19:44 +02:00
parent 94d9819bdc
commit 48808a5320
2 changed files with 9 additions and 6 deletions
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4
src/libstore-c/nix_api_store.h
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@ -111,7 +111,9 @@ bool nix_store_is_valid_path(nix_c_context * context, Store * store, StorePath *
/**
* @brief Realise a Nix store path
*
* Blocking, calls callback once for each realised output
* Blocking, calls callback once for each realised output.
*
* @note When working with expressions, consider using e.g. nix_string_realise to get the output. `.drvPath` may not be accurate or available in the future. See https://github.com/NixOS/nix/issues/6507
*
* @param[out] context Optional, stores error information
* @param[in] store Nix Store reference

11
tests/unit/libexpr/nix_api_expr.cc
View file

@ -74,6 +74,9 @@ TEST_F(nix_api_expr_test, nix_build_drv)
std::string pEnd = "-myname.drv";
ASSERT_EQ(pEnd, p.substr(p.size() - pEnd.size()));
// NOTE: .drvPath should be usually be ignored. Output paths are more versatile.
// See https://github.com/NixOS/nix/issues/6507
// Use e.g. nix_string_realise to realise the output.
StorePath * drvStorePath = nix_store_parse_path(ctx, store, drvPath);
ASSERT_EQ(true, nix_store_is_valid_path(ctx, store, drvStorePath));
@ -88,11 +91,9 @@ TEST_F(nix_api_expr_test, nix_build_drv)
StorePath * outStorePath = nix_store_parse_path(ctx, store, outPath);
ASSERT_EQ(false, nix_store_is_valid_path(ctx, store, outStorePath));
// TODO figure out why fails.
// `make libexpr-tests_RUN` works, but `nix build .` enters an infinite loop
/* nix_store_realise(ctx, store, drvStorePath, nullptr, nullptr); */
/* auto is_valid_path = nix_store_is_valid_path(ctx, store, outStorePath); */
/* ASSERT_EQ(true, is_valid_path); */
nix_store_realise(ctx, store, drvStorePath, nullptr, nullptr);
auto is_valid_path = nix_store_is_valid_path(ctx, store, outStorePath);
ASSERT_EQ(true, is_valid_path);
// Clean up
nix_store_path_free(drvStorePath);