add binary-specific options via Binary scope

Especially with apt now, it can be useful to set an option only for apt
and not for apt-get. Using a binary-specific subtree which is merged into
the root seems like a simple enough trick to achieve this.

1 files changed, 17 insertions, 0 deletions

diff --git a/test/libapt/configuration_test.cc b/test/libapt/configuration_test.cc
index 647d8a4af..6300b5256 100644
--- a/test/libapt/configuration_test.cc
+++ b/test/libapt/configuration_test.cc
@@ -144,3 +144,20 @@ TEST(ConfigurationTest,Vector)
 	EXPECT_EQ("abel", vec[0]);
 	EXPECT_EQ("bravo", vec[1]);
 }
+TEST(ConfigurationTest,Merge)
+{
+	Configuration Cnf;
+	Cnf.Set("Binary::apt::option::foo", "bar");
+	Cnf.Set("option::foo", "foo");
+
+	Cnf.MoveSubTree("Binary::apt", "Binary::apt2");
+	EXPECT_FALSE(Cnf.Exists("Binary::apt::option"));
+	EXPECT_TRUE(Cnf.Exists("option"));
+	EXPECT_EQ("foo", Cnf.Find("option::foo"));
+	EXPECT_EQ("bar", Cnf.Find("Binary::apt2::option::foo"));
+
+	Cnf.MoveSubTree("Binary::apt2", NULL);
+	EXPECT_FALSE(Cnf.Exists("Binary::apt2::option"));
+	EXPECT_TRUE(Cnf.Exists("option"));
+	EXPECT_EQ("bar", Cnf.Find("option::foo"));
+}