// Copyright 2019 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package rust

import (
	"strings"
	"testing"
)

// Test that feature flags are being correctly generated.
func TestFeaturesToFlags(t *testing.T) {
	ctx := testRust(t, `
		rust_library_host_dylib {
			name: "libfoo",
			srcs: ["foo.rs"],
			crate_name: "foo",
			features: [
				"fizz",
				"buzz"
			],
		}`)

	libfooDylib := ctx.ModuleForTests("libfoo", "linux_glibc_x86_64_dylib").Rule("rustc")

	if !strings.Contains(libfooDylib.Args["rustcFlags"], "cfg 'feature=\"fizz\"'") ||
		!strings.Contains(libfooDylib.Args["rustcFlags"], "cfg 'feature=\"buzz\"'") {
		t.Fatalf("missing fizz and buzz feature flags for libfoo dylib, rustcFlags: %#v", libfooDylib.Args["rustcFlags"])
	}
}

// Test that we reject multiple source files.
func TestEnforceSingleSourceFile(t *testing.T) {

	singleSrcError := "srcs can only contain one path for rust modules"

	// Test libraries
	testRustError(t, singleSrcError, `
		rust_library_host {
			name: "foo-bar-library",
			srcs: ["foo.rs", "src/bar.rs"],
		}`)

	// Test binaries
	testRustError(t, singleSrcError, `
			rust_binary_host {
				name: "foo-bar-binary",
				srcs: ["foo.rs", "src/bar.rs"],
			}`)

	// Test proc_macros
	testRustError(t, singleSrcError, `
		rust_proc_macro {
			name: "foo-bar-proc-macro",
			srcs: ["foo.rs", "src/bar.rs"],
			host_supported: true,
		}`)

	// Test prebuilts
	testRustError(t, singleSrcError, `
		rust_prebuilt_dylib {
			name: "foo-bar-prebuilt",
			srcs: ["liby.so", "libz.so"],
		  host_supported: true,
		}`)
}