GN: Add notion of 'complete' static libraries, akin to GYP.

tools/gn/ninja_binary_target_writer_unittest.cc

 // 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 <sstream>
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "tools/gn/ninja_binary_target_writer.h"
 #include "tools/gn/target.h"
 #include "tools/gn/test_with_scope.h"
@@ skipping 107 matching lines @@
         "\n"
         // There are no sources so there are no params to alink. (In practice
         // this will probably fail in the archive tool.)
         "build obj/foo/libstlib.a: alink\n"
         "  ldflags =\n"
         "  libs =\n"
         "  output_extension = \n";
     std::string out_str = out.str();
     EXPECT_EQ(expected, out_str);
   }
+
+  // Make the static library 'complete', which means it should be linked.
+  stlib_target.set_complete_static_lib(true);
+  {
+    std::ostringstream out;
+    NinjaBinaryTargetWriter writer(&stlib_target, out);
+    writer.Run();
+
+    const char expected[] =
+        "defines =\n"
+        "include_dirs =\n"
+        "cflags =\n"
+        "cflags_c =\n"
+        "cflags_cc =\n"
+        "cflags_objc =\n"
+        "cflags_objcc =\n"
+        "root_out_dir = .\n"
+        "target_out_dir = obj/foo\n"
+        "target_output_name = libstlib\n"
+        "\n"
+        "\n"
+        // Ordering of the obj files here should come out in the order
+        // specified, with the target's first, followed by the source set's, in
+        // order.
+        "build obj/foo/libstlib.a: alink obj/foo/bar.input1.o "
+            "obj/foo/bar.input2.o ../../foo/input3.o ../../foo/input4.obj\n"
+        "  ldflags =\n"
+        "  libs =\n"
+        "  output_extension = \n";
+    std::string out_str = out.str();
+    EXPECT_EQ(expected, out_str);
+  }
 }
 
 // This tests that output extension overrides apply, and input dependencies
 // are applied.
 TEST(NinjaBinaryTargetWriter, ProductExtensionAndInputDeps) {
   TestWithScope setup;
   Err err;
 
   setup.build_settings()->SetBuildDir(SourceDir("//out/Debug/"));
   setup.settings()->set_target_os(Settings::LINUX);
@@ skipping 88 matching lines @@
       "\n"
       "build ./libshlib.so: solink obj/foo/libshlib.input1.o "
           "obj/foo/libshlib.input2.o\n"
       "  ldflags =\n"
       "  libs =\n"
       "  output_extension = .so\n";
 
   std::string out_str = out.str();
   EXPECT_EQ(expected, out_str);
 }