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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gn/scheduler.h"
#include "gn/scope.h"
#include "gn/test_with_scheduler.h"
#include "gn/test_with_scope.h"
#include "util/test/test.h"
using FunctionsTarget = TestWithScheduler;
// Checks that we find unused identifiers in targets.
TEST_F(FunctionsTarget, CheckUnused) {
TestWithScope setup;
// The target generator needs a place to put the targets or it will fail.
Scope::ItemVector item_collector;
setup.scope()->set_item_collector(&item_collector);
// Test a good one first.
TestParseInput good_input(
"source_set(\"foo\") {\n"
"}\n");
ASSERT_FALSE(good_input.has_error());
Err err;
good_input.parsed()->Execute(setup.scope(), &err);
ASSERT_FALSE(err.has_error()) << err.message();
// Test a source set with an unused variable.
TestParseInput source_set_input(
"source_set(\"foo\") {\n"
" unused = 5\n"
"}\n");
ASSERT_FALSE(source_set_input.has_error());
err = Err();
source_set_input.parsed()->Execute(setup.scope(), &err);
ASSERT_TRUE(err.has_error());
}
// Checks that we find uses of identifiers marked as not needed.
TEST_F(FunctionsTarget, CheckNotNeeded) {
TestWithScope setup;
// The target generator needs a place to put the targets or it will fail.
Scope::ItemVector item_collector;
setup.scope()->set_item_collector(&item_collector);
TestParseInput nonscoped_input(
"source_set(\"foo\") {\n"
" a = 1\n"
" not_needed([ \"a\" ])\n"
"}\n");
ASSERT_FALSE(nonscoped_input.has_error());
Err err;
nonscoped_input.parsed()->Execute(setup.scope(), &err);
ASSERT_FALSE(err.has_error()) << err.message();
TestParseInput scoped_input(
"source_set(\"foo\") {\n"
" a = {x = 1 y = 2}\n"
" not_needed(a, \"*\")\n"
"}\n");
ASSERT_FALSE(scoped_input.has_error());
err = Err();
scoped_input.parsed()->Execute(setup.scope(), &err);
ASSERT_FALSE(err.has_error()) << err.message();
TestParseInput nonexistent_arg_input(
"source_set(\"foo\") {\n"
" a = {x = 1}\n"
" not_needed(a, [ \"x\", \"y\" ])\n"
"}\n");
ASSERT_FALSE(nonexistent_arg_input.has_error());
err = Err();
nonexistent_arg_input.parsed()->Execute(setup.scope(), &err);
ASSERT_FALSE(err.has_error()) << err.message();
TestParseInput exclusion_input(
"source_set(\"foo\") {\n"
" x = 1\n"
" y = 2\n"
" not_needed(\"*\", [ \"y\" ])\n"
"}\n");
ASSERT_FALSE(exclusion_input.has_error());
err = Err();
exclusion_input.parsed()->Execute(setup.scope(), &err);
ASSERT_TRUE(err.has_error()) << err.message();
EXPECT_EQ("Assignment had no effect.", err.message());
TestParseInput error_input(
"source_set(\"foo\") {\n"
" a = {x = 1 y = 2}\n"
" not_needed(a, [ \"x \"], [ \"y\" ])\n"
"}\n");
ASSERT_FALSE(error_input.has_error());
err = Err();
error_input.parsed()->Execute(setup.scope(), &err);
ASSERT_TRUE(err.has_error());
EXPECT_EQ("Not supported with a variable list.", err.message());
TestParseInput argcount_error_input(
"source_set(\"foo\") {\n"
" not_needed()\n"
"}\n");
ASSERT_FALSE(argcount_error_input.has_error());
err = Err();
argcount_error_input.parsed()->Execute(setup.scope(), &err);
ASSERT_TRUE(err.has_error());
EXPECT_EQ("Wrong number of arguments.", err.message());
TestParseInput scope_error_input(
"source_set(\"foo\") {\n"
" a = {x = 1 y = 2}\n"
" not_needed(a)\n"
"}\n");
ASSERT_FALSE(scope_error_input.has_error());
err = Err();
scope_error_input.parsed()->Execute(setup.scope(), &err);
ASSERT_TRUE(err.has_error());
EXPECT_EQ("Wrong number of arguments.", err.message());
TestParseInput string_error_input(
"source_set(\"foo\") {\n"
" not_needed(\"*\", {}, \"*\")\n"
"}\n");
ASSERT_FALSE(string_error_input.has_error());
err = Err();
string_error_input.parsed()->Execute(setup.scope(), &err);
ASSERT_TRUE(err.has_error());
EXPECT_EQ("Wrong number of arguments.", err.message());
TestParseInput template_input(
R"(# Test that not_needed() propagates through templates correctly;
# no error should arise from not using "a".
template("inner_templ") {
source_set(target_name) {
not_needed(invoker, [ "a" ])
}
}
template("outer_templ") {
inner_templ(target_name) {
forward_variables_from(invoker, "*")
}
}
outer_templ("foo") {
a = 1
})");
ASSERT_FALSE(template_input.has_error());
err = Err();
template_input.parsed()->Execute(setup.scope(), &err);
ASSERT_FALSE(err.has_error()) << err.message();
}
// Checks that the defaults applied to a template invoked by target() use
// the name of the template, rather than the string "target" (which is the
// name of the actual function being called).
TEST_F(FunctionsTarget, TemplateDefaults) {
TestWithScope setup;
// The target generator needs a place to put the targets or it will fail.
Scope::ItemVector item_collector;
setup.scope()->set_item_collector(&item_collector);
// Test a good one first.
TestParseInput good_input(
R"(# Make a template with defaults set.
template("my_templ") {
source_set(target_name) {
forward_variables_from(invoker, "*")
}
}
set_defaults("my_templ") {
default_value = 1
}
# Invoke the template with target(). This will fail to execute if the
# defaults were not set properly, because "default_value" won't exist.
target("my_templ", "foo") {
print(default_value)
})");
ASSERT_FALSE(good_input.has_error());
Err err;
good_input.parsed()->Execute(setup.scope(), &err);
ASSERT_FALSE(err.has_error()) << err.message();
}
// Checks that we find unused identifiers in targets.
TEST_F(FunctionsTarget, MixedSourceError) {
TestWithScope setup;
// The target generator needs a place to put the targets or it will fail.
Scope::ItemVector item_collector;
setup.scope()->set_item_collector(&item_collector);
// Test a good one first.
TestParseInput good_input(
"source_set(\"foo\") {\n"
" sources = [ \"cpp.cc\", \"rust.rs\" ]"
"}\n");
ASSERT_FALSE(good_input.has_error());
Err err;
good_input.parsed()->Execute(setup.scope(), &err);
ASSERT_TRUE(err.has_error());
ASSERT_EQ(err.message(), "More than one language used in target sources.");
}
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