Implement a feature to generate a dependency file. By giving protoc the flag

"--dependency_manifest_out=FILE", protoc will write dependencies of
input proto files into FILE. In FILE, the format will be
<full path to FILE>: <full path to 1st proto>\\\n <full path to 2nd proto> ...
This cl is based on https://github.com/google/protobuf/pull/178

1 files changed, 65 insertions, 0 deletions

diff --git a/src/google/protobuf/compiler/command_line_interface_unittest.cc b/src/google/protobuf/compiler/command_line_interface_unittest.cc
index dbaaa405..e7cfff6b 100644
--- a/src/google/protobuf/compiler/command_line_interface_unittest.cc
+++ b/src/google/protobuf/compiler/command_line_interface_unittest.cc
@@ -116,6 +116,10 @@ class CommandLineInterfaceTest : public testing::Test {
     cli_.SetInputsAreProtoPathRelative(enable);
   }
 
+  string GetTempDirectory() {
+    return temp_directory_;
+  }
+
   // -----------------------------------------------------------------
   // Methods to check the test results (called after Run()).
 
@@ -176,6 +180,9 @@ class CommandLineInterfaceTest : public testing::Test {
   void ReadDescriptorSet(const string& filename,
                          FileDescriptorSet* descriptor_set);
 
+  void ExpectFileContent(const string& filename,
+                         const string& content);
+
  private:
   // The object we are testing.
   CommandLineInterface cli_;
@@ -456,6 +463,17 @@ void CommandLineInterfaceTest::ExpectCapturedStdout(
   EXPECT_EQ(expected_text, captured_stdout_);
 }
 
+
+void CommandLineInterfaceTest::ExpectFileContent(
+    const string& filename, const string& content) {
+  string path = temp_directory_ + "/" + filename;
+  string file_contents;
+  GOOGLE_CHECK_OK(File::GetContents(path, &file_contents, true));
+
+  EXPECT_EQ(StringReplace(content, "$tmpdir", temp_directory_, true),
+            file_contents);
+}
+
 // ===================================================================
 
 TEST_F(CommandLineInterfaceTest, BasicOutput) {
@@ -940,6 +958,53 @@ TEST_F(CommandLineInterfaceTest, WriteTransitiveDescriptorSetWithSourceInfo) {
   EXPECT_TRUE(descriptor_set.file(1).has_source_code_info());
 }
 
+TEST_F(CommandLineInterfaceTest, WriteDependencyManifestFile) {
+  CreateTempFile("foo.proto",
+    "syntax = \"proto2\";\n"
+    "message Foo {}\n");
+  CreateTempFile("bar.proto",
+    "syntax = \"proto2\";\n"
+    "import \"foo.proto\";\n"
+    "message Bar {\n"
+    "  optional Foo foo = 1;\n"
+    "}\n");
+
+  Run("protocol_compiler --dependency_manifest_out=$tmpdir/manifest "
+      "--test_out=$tmpdir --proto_path=$tmpdir bar.proto");
+
+  ExpectNoErrors();
+
+  ExpectFileContent("manifest",
+                    "$tmpdir/manifest: $tmpdir/foo.proto\\\n"
+                    " $tmpdir/bar.proto");
+}
+
+TEST_F(CommandLineInterfaceTest, WriteDependencyManifestFileForRelativePath) {
+  CreateTempFile("foo.proto",
+    "syntax = \"proto2\";\n"
+    "message Foo {}\n");
+  CreateTempFile("bar.proto",
+    "syntax = \"proto2\";\n"
+    "import \"foo.proto\";\n"
+    "message Bar {\n"
+    "  optional Foo foo = 1;\n"
+    "}\n");
+
+  string current_working_directory = get_current_dir_name();
+  File::ChangeWorkingDirectory(GetTempDirectory());
+
+  Run("protocol_compiler --dependency_manifest_out=manifest "
+      "--test_out=$tmpdir --proto_path=$tmpdir bar.proto");
+
+  ExpectNoErrors();
+
+  ExpectFileContent("manifest",
+                    "$tmpdir/manifest: $tmpdir/foo.proto\\\n"
+                    " $tmpdir/bar.proto");
+
+  File::ChangeWorkingDirectory(current_working_directory);
+}
+
 // -------------------------------------------------------------------
 
 TEST_F(CommandLineInterfaceTest, ParseErrors) {