test/java/common/rules/java_binary_tests.bzl

"""Tests for the java_binary rule"""

load("@bazel_features//:features.bzl", "bazel_features")
load("@rules_cc//cc:cc_binary.bzl", "cc_binary")
load("@rules_cc//cc:cc_library.bzl", "cc_library")
load("@rules_testing//lib:analysis_test.bzl", "analysis_test", "test_suite")
load("@rules_testing//lib:truth.bzl", "matching", "subjects")
load("@rules_testing//lib:util.bzl", "util")
load("//java:java_binary.bzl", "java_binary")
load("//java:java_library.bzl", "java_library")
load("//test/java/common/rules:common_launcher_java_binary_tests.bzl", "JAVA_BINARY_LAUNCHER_TESTS")
load("//test/java/testutil:helper.bzl", "always_passes")
load("//test/java/testutil:java_info_subject.bzl", "java_info_subject")
load("//test/java/testutil:rules/custom_java_info_rule.bzl", "custom_java_info_rule")
load("//test/java/testutil:rules/forward_java_info.bzl", "java_info_forwarding_rule")

def _test_java_binary_provides_binary_java_info(name):
    util.helper_target(java_binary, name = "bin", srcs = ["Main.java"])

    analysis_test(
        name = name,
        impl = _test_java_binary_provides_binary_java_info_impl,
        target = Label(":bin"),
    )

def _test_java_binary_provides_binary_java_info_impl(env, target):
    assert_java_info = java_info_subject.from_target(env, target)

    assert_java_info.compilation_args().equals(None)
    assert_java_info.is_binary().equals(True)

def _test_stamp_conversion_does_not_override_int(name):
    util.helper_target(
        java_binary,
        name = name + "/bin",
        srcs = ["Main.java"],
        stamp = -1,
    )

    analysis_test(
        name = name,
        impl = _test_stamp_conversion_does_not_override_int_impl,
        target = name + "/bin",
        config_settings = {
            "//command_line_option:stamp": False,
        },
        # deploy jars are in a separate rule in Bazel 7, Bazel 6 generated build-info differently
        attr_values = {"tags": ["min_bazel_8"]},
    )

def _test_stamp_conversion_does_not_override_int_impl(env, target):
    assert_deploy_jar_action = env.expect.that_target(target).action_generating(
        "{package}/{name}_deploy.jar",
    )

    assert_deploy_jar_action.inputs().not_contains_predicate(
        matching.file_basename_equals("non_volatile_file.properties"),
    )
    assert_deploy_jar_action.inputs().contains_predicate(
        matching.file_basename_equals("redacted_file.properties"),
    )

def _test_java_binary_attributes(name):
    util.helper_target(
        java_library,
        name = name + "/jl_bottom_for_deps",
        srcs = ["java/A.java"],
    )
    util.helper_target(
        java_library,
        name = name + "/jl_bottom_for_runtime_deps",
        srcs = ["java/A2.java"],
    )
    util.helper_target(
        java_info_forwarding_rule,
        name = name + "/mya",
        dep = name + "/jl_bottom_for_deps",
    )
    util.helper_target(
        java_info_forwarding_rule,
        name = name + "/myb",
        dep = name + "/jl_bottom_for_runtime_deps",
    )
    util.helper_target(
        java_binary,
        name = name + "/binary",
        srcs = ["java/B.java"],
        main_class = "foo.A",
        deps = [name + "/mya"],
        runtime_deps = [name + "/myb"],
    )

    analysis_test(
        name = name,
        impl = _test_java_binary_attributes_impl,
        target = name + "/binary",
    )

def _test_java_binary_attributes_impl(env, target):
    assert_runtime_classpath = java_info_subject.from_target(env, target).compilation_info().runtime_classpath()

    # Test that all bottom jars are on the runtime classpath.
    assert_runtime_classpath.contains_at_least_predicates([
        matching.file_basename_equals("jl_bottom_for_deps.jar"),
        matching.file_basename_equals("jl_bottom_for_runtime_deps.jar"),
    ])

def _test_java_binary_propagates_direct_native_libraries(name):
    util.helper_target(
        cc_library,
        name = name + "/cclib",
        srcs = ["z.cc"],
    )
    util.helper_target(
        cc_binary,
        name = name + "/native",
        srcs = ["cc/x.cc"],
        deps = [name + "/cclib"],
        linkshared = 1,
        linkstatic = 1,
    )
    util.helper_target(
        java_library,
        name = name + "/jl",
        srcs = ["java/A.java"],
        deps = [name + "/native"],
    )
    util.helper_target(
        cc_binary,
        name = name + "/ccl",
        srcs = ["cc/x.cc"],
        deps = [name + "/cclib"],
        linkshared = 1,
        linkstatic = 1,
    )
    util.helper_target(
        custom_java_info_rule,
        name = name + "/r",
        output_jar = name + "-out.jar",
        cc_dep = [name + "/ccl"],
        dep = [name + "/jl"],
    )
    util.helper_target(
        java_binary,
        name = name + "/binary",
        srcs = ["java/C.java"],
        deps = [name + "/r"],
        main_class = "C",
    )

    analysis_test(
        name = name,
        impl = _test_java_binary_propagates_direct_native_libraries_impl,
        target = name + "/binary",
    )

def _test_java_binary_propagates_direct_native_libraries_impl(env, target):
    executable = target[DefaultInfo].files_to_run.executable.short_path
    assert_action = env.expect.that_target(target).action_generating(executable)
    if assert_action.actual.substitutions:
        # TemplateExpansion action on linux/mac
        assert_jvm_flags = assert_action.substitutions().get(
            "%jvm_flags%",
            factory = lambda v, meta: subjects.collection([v], meta),
        )
    else:
        # windows
        assert_jvm_flags = assert_action.argv()
    assert_jvm_flags.contains_predicate(
        matching.str_matches("-Djava.library.path=${JAVA_RUNFILES}/*/test_java_binary_propagates_direct_native_libraries"),
    )

def _test_java_compile_only(name):
    util.helper_target(
        java_library,
        name = name + "/hello_library",
        srcs = ["HelloLibrary.java"],
    )
    util.helper_target(
        java_binary,
        name = name + "/main",
        srcs = ["Main.java"],
        main_class = "main.Main",
        deps = [name + "/hello_library"],
    )

    analysis_test(
        name = name,
        impl = _test_java_compile_only_impl,
        target = name + "/main",
    )

def _test_java_compile_only_impl(env, target):
    # Assert that the compilation output is exactly main jar, and does not contain a variant of
    # hello_library.jar.
    env.expect.that_target(target).output_group(
        "compilation_outputs",
    ).contains_exactly(["{package}/{name}.jar"])

def _test_java_binary_can_set_transitive_validation(name):
    if not bazel_features.rules.analysis_tests_can_transition_on_experimental_incompatible_flags:
        # exit early because this test case would be a loading phase error otherwise
        always_passes(name)
        return

    env_name = name + "_env"
    util.helper_target(
        java_library,
        name = env_name + "_leaf",
        srcs = ["A.java"],
        neverlink = True,  # add runtime_classpath to validation output group
    )
    util.helper_target(
        java_binary,
        name = env_name,
        srcs = ["Env.java"],
        deps = [env_name + "_leaf"],
        neverlink = True,  # add runtime_classpath to validation output group
    )
    util.helper_target(
        java_binary,
        name = name + "_bin",
        srcs = ["Bin.java"],
        data = [env_name],
        deploy_env = [env_name],
        create_executable = False,
    )

    analysis_test(
        name = name,
        impl = _test_java_binary_can_set_transitive_validation_impl,
        targets = {
            "bin": name + "_bin",
            "env": env_name,
        },
        # Turn off other validations
        config_settings = {
            "//command_line_option:experimental_run_android_lint_on_java_rules": False,
            "//command_line_option:experimental_one_version_enforcement": "OFF",
        },
    )

def _test_java_binary_can_set_transitive_validation_impl(env, targets):
    # ensure the env target has validation outputs
    env.expect.that_target(targets.env).output_group("_validation").contains_at_least([
        "{package}/{name}.jar",
        "{package}/lib{name}_leaf.jar",
    ])

    # ensure they don't propagate to `bin` because they're a part of the `deploy_env`
    env.expect.that_target(targets.bin).output_group("_validation").contains_exactly([])

def java_binary_tests(name):
    test_suite(
        name = "_basic_" + name,
        tests = [
            _test_java_binary_provides_binary_java_info,
            _test_stamp_conversion_does_not_override_int,
            _test_java_binary_attributes,
            _test_java_binary_propagates_direct_native_libraries,
            _test_java_compile_only,
            _test_java_binary_can_set_transitive_validation,
        ],
    )

    # TODO: unset --java_launcher explicitly
    test_suite(
        name = "_jdk_launcher_" + name,
        tests = JAVA_BINARY_LAUNCHER_TESTS,
    )

    native.test_suite(
        name = name,
        tests = [
            "_basic_" + name,
            "_jdk_launcher_" + name,
        ],
    )