cli: add tests for command_tree

1 files changed, 45 insertions, 0 deletions

diff --git a/nihil.cli/command_tree.test.cc b/nihil.cli/command_tree.test.cc
new file mode 100644
index 0000000..a1e7d32
--- /dev/null
+++ b/nihil.cli/command_tree.test.cc
@@ -0,0 +1,45 @@
+// This source code is released into the public domain.
+
+#include <catch2/catch_test_macros.hpp>
+
+import nihil.std;
+import nihil.cli;
+
+namespace {
+
+inline auto constexpr *test_tags = "[nihil][nihil.cli]";
+
+SCENARIO("Inserting and retrieving nodes in a command_tree", test_tags)
+{
+	GIVEN ("A command tree") {
+		auto tree = nihil::command_tree();
+
+		THEN ("We can insert nodes into the tree") {
+			tree.insert(std::make_shared<nihil::command>("cmd1 sub1"));
+			tree.insert(std::make_shared<nihil::command>("cmd1 sub2"));
+			tree.insert(std::make_shared<nihil::command>("cmd2 sub1"));
+
+			AND_THEN ("We can retrieve nodes from the tree") {
+				auto c1s1 = tree.find(std::vector{"cmd1", "sub1"});
+				REQUIRE(c1s1.first->command().path() == "cmd1 sub1");
+
+				auto c1s2 = tree.find(std::vector{"cmd1", "sub2"});
+				REQUIRE(c1s2.first->command().path() == "cmd1 sub2");
+
+				auto c2s1 = tree.find(std::vector{"cmd2", "sub1"});
+				REQUIRE(c2s1.first->command().path() == "cmd2 sub1");
+			}
+
+			AND_THEN ("Fetching an unknown command returns the root node") {
+				auto cmd = tree.find(std::vector{"cmd3", "sub1"});
+				REQUIRE(cmd.first->command().path() == "");
+			}
+
+			AND_THEN ("Fetching an unknown subcommand returns the cmd1 node") {
+				auto cmd = tree.find(std::vector{"cmd1", "sub3"});
+				REQUIRE(cmd.first->command().path() == "cmd1");
+			}
+		}
+	}
+}
+} // anonymous namespace