test/rustc_env_files/BUILD.bazel

load("@bazel_skylib//rules:write_file.bzl", "write_file")
load("//rust:defs.bzl", "rust_binary", "rust_library", "rust_test")

package(default_visibility = ["//visibility:public"])

rust_binary(
    name = "hello_env",
    srcs = ["src/main.rs"],
    edition = "2018",
    rustc_env_files = [":generate_rustc_env_file"],
)

write_file(
    name = "generate_rustc_env_file",
    out = "rustc_env_file",
    content = [
        "CARGO_PKG_VERSION=1.2.3",
        "GREETING=Howdy",
        "",
    ],
)

rust_test(
    name = "output_test",
    srcs = ["output_test.rs"],
    data = [":hello_env"],
    edition = "2018",
    rustc_env = {"HELLO_ENV": "$(rlocationpath :hello_env)"},
    deps = ["//rust/runfiles"],
)

rust_library(
    name = "hello_env_crate",
    srcs = ["src/lib.rs"],
    edition = "2018",
    rustc_env_files = [":generate_rustc_env_file"],
)

rust_test(
    name = "hello_env_crate_test",
    crate = ":hello_env_crate",
)