mirror of
https://github.com/NixOS/nix.git
synced 2024-11-22 14:52:55 +00:00
195 lines
7.2 KiB
C++
195 lines
7.2 KiB
C++
#include "nix_api_store.h"
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#include "nix_api_store_internal.h"
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#include "nix_api_util.h"
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#include "nix_api_util_internal.h"
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#include "nix_api_expr.h"
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#include "nix_api_value.h"
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#include "tests/nix_api_expr.hh"
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#include "tests/string_callback.hh"
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#include "gmock/gmock.h"
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#include <gtest/gtest.h>
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namespace nixC {
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TEST_F(nix_api_expr_test, nix_expr_eval_from_string)
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{
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nix_expr_eval_from_string(nullptr, state, "builtins.nixVersion", ".", value);
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nix_value_force(nullptr, state, value);
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std::string result;
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nix_get_string(nullptr, value, OBSERVE_STRING(result));
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ASSERT_STREQ(PACKAGE_VERSION, result.c_str());
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}
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TEST_F(nix_api_expr_test, nix_expr_eval_add_numbers)
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{
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nix_expr_eval_from_string(nullptr, state, "1 + 1", ".", value);
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nix_value_force(nullptr, state, value);
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auto result = nix_get_int(nullptr, value);
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ASSERT_EQ(2, result);
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}
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TEST_F(nix_api_expr_test, nix_expr_eval_drv)
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{
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auto expr = R"(derivation { name = "myname"; builder = "mybuilder"; system = "mysystem"; })";
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nix_expr_eval_from_string(nullptr, state, expr, ".", value);
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ASSERT_EQ(NIX_TYPE_ATTRS, nix_get_type(nullptr, value));
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EvalState * stateFn = nix_state_create(nullptr, nullptr, store);
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Value * valueFn = nix_alloc_value(nullptr, state);
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nix_expr_eval_from_string(nullptr, stateFn, "builtins.toString", ".", valueFn);
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ASSERT_EQ(NIX_TYPE_FUNCTION, nix_get_type(nullptr, valueFn));
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EvalState * stateResult = nix_state_create(nullptr, nullptr, store);
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Value * valueResult = nix_alloc_value(nullptr, stateResult);
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nix_value_call(ctx, stateResult, valueFn, value, valueResult);
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ASSERT_EQ(NIX_TYPE_STRING, nix_get_type(nullptr, valueResult));
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std::string p;
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nix_get_string(nullptr, valueResult, OBSERVE_STRING(p));
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std::string pEnd = "-myname";
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ASSERT_EQ(pEnd, p.substr(p.size() - pEnd.size()));
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// Clean up
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nix_gc_decref(nullptr, valueFn);
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nix_state_free(stateFn);
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nix_gc_decref(nullptr, valueResult);
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nix_state_free(stateResult);
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}
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TEST_F(nix_api_expr_test, nix_build_drv)
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{
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auto expr = R"(derivation { name = "myname";
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system = builtins.currentSystem;
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builder = "/bin/sh";
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args = [ "-c" "echo foo > $out" ];
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})";
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nix_expr_eval_from_string(nullptr, state, expr, ".", value);
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Value * drvPathValue = nix_get_attr_byname(nullptr, value, state, "drvPath");
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std::string drvPath;
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nix_get_string(nullptr, drvPathValue, OBSERVE_STRING(drvPath));
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std::string p = drvPath;
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std::string pEnd = "-myname.drv";
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ASSERT_EQ(pEnd, p.substr(p.size() - pEnd.size()));
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// NOTE: .drvPath should be usually be ignored. Output paths are more versatile.
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// See https://github.com/NixOS/nix/issues/6507
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// Use e.g. nix_string_realise to realise the output.
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StorePath * drvStorePath = nix_store_parse_path(ctx, store, drvPath.c_str());
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ASSERT_EQ(true, nix_store_is_valid_path(ctx, store, drvStorePath));
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Value * outPathValue = nix_get_attr_byname(ctx, value, state, "outPath");
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std::string outPath;
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nix_get_string(ctx, outPathValue, OBSERVE_STRING(outPath));
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p = outPath;
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pEnd = "-myname";
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ASSERT_EQ(pEnd, p.substr(p.size() - pEnd.size()));
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ASSERT_EQ(true, drvStorePath->path.isDerivation());
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StorePath * outStorePath = nix_store_parse_path(ctx, store, outPath.c_str());
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ASSERT_EQ(false, nix_store_is_valid_path(ctx, store, outStorePath));
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nix_store_realise(ctx, store, drvStorePath, nullptr, nullptr);
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auto is_valid_path = nix_store_is_valid_path(ctx, store, outStorePath);
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ASSERT_EQ(true, is_valid_path);
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// Clean up
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nix_store_path_free(drvStorePath);
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nix_store_path_free(outStorePath);
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}
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TEST_F(nix_api_expr_test, nix_expr_realise_context_bad_value)
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{
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auto expr = "true";
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nix_expr_eval_from_string(ctx, state, expr, ".", value);
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assert_ctx_ok();
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auto r = nix_string_realise(ctx, state, value, false);
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ASSERT_EQ(nullptr, r);
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ASSERT_EQ(ctx->last_err_code, NIX_ERR_NIX_ERROR);
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ASSERT_THAT(ctx->last_err, testing::Optional(testing::HasSubstr("cannot coerce")));
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}
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TEST_F(nix_api_expr_test, nix_expr_realise_context_bad_build)
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{
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auto expr = R"(
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derivation { name = "letsbuild";
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system = builtins.currentSystem;
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builder = "/bin/sh";
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args = [ "-c" "echo failing a build for testing purposes; exit 1;" ];
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}
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)";
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nix_expr_eval_from_string(ctx, state, expr, ".", value);
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assert_ctx_ok();
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auto r = nix_string_realise(ctx, state, value, false);
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ASSERT_EQ(nullptr, r);
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ASSERT_EQ(ctx->last_err_code, NIX_ERR_NIX_ERROR);
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ASSERT_THAT(ctx->last_err, testing::Optional(testing::HasSubstr("failed with exit code 1")));
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}
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TEST_F(nix_api_expr_test, nix_expr_realise_context)
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{
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// TODO (ca-derivations): add a content-addressed derivation output, which produces a placeholder
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auto expr = R"(
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''
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a derivation output: ${
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derivation { name = "letsbuild";
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system = builtins.currentSystem;
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builder = "/bin/sh";
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args = [ "-c" "echo foo > $out" ];
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}}
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a path: ${builtins.toFile "just-a-file" "ooh file good"}
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a derivation path by itself: ${
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builtins.unsafeDiscardOutputDependency
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(derivation {
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name = "not-actually-built-yet";
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system = builtins.currentSystem;
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builder = "/bin/sh";
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args = [ "-c" "echo foo > $out" ];
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}).drvPath}
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''
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)";
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nix_expr_eval_from_string(ctx, state, expr, ".", value);
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assert_ctx_ok();
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auto r = nix_string_realise(ctx, state, value, false);
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assert_ctx_ok();
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ASSERT_NE(nullptr, r);
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auto s = std::string(nix_realised_string_get_buffer_start(r), nix_realised_string_get_buffer_size(r));
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EXPECT_THAT(s, testing::StartsWith("a derivation output:"));
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EXPECT_THAT(s, testing::HasSubstr("-letsbuild\n"));
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EXPECT_THAT(s, testing::Not(testing::HasSubstr("-letsbuild.drv")));
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EXPECT_THAT(s, testing::HasSubstr("a path:"));
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EXPECT_THAT(s, testing::HasSubstr("-just-a-file"));
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EXPECT_THAT(s, testing::Not(testing::HasSubstr("-just-a-file.drv")));
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EXPECT_THAT(s, testing::Not(testing::HasSubstr("ooh file good")));
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EXPECT_THAT(s, testing::HasSubstr("a derivation path by itself:"));
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EXPECT_THAT(s, testing::EndsWith("-not-actually-built-yet.drv\n"));
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std::vector<std::string> names;
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size_t n = nix_realised_string_get_store_path_count(r);
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for (size_t i = 0; i < n; ++i) {
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const StorePath * p = nix_realised_string_get_store_path(r, i);
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ASSERT_NE(nullptr, p);
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std::string name;
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nix_store_path_name(p, OBSERVE_STRING(name));
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names.push_back(name);
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}
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std::sort(names.begin(), names.end());
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ASSERT_EQ(3, names.size());
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EXPECT_THAT(names[0], testing::StrEq("just-a-file"));
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EXPECT_THAT(names[1], testing::StrEq("letsbuild"));
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EXPECT_THAT(names[2], testing::StrEq("not-actually-built-yet.drv"));
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nix_realised_string_free(r);
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}
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} // namespace nixC
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