wandac: add tests for the CLI

1 files changed, 80 insertions, 0 deletions

diff --git a/source/tests/app/wandac/src/cli.cpp b/source/tests/app/wandac/src/cli.cpp
new file mode 100644
index 0000000..ed02b4a
--- /dev/null
+++ b/source/tests/app/wandac/src/cli.cpp
@@ -0,0 +1,80 @@
+#include "wandac/cli.hpp"
+
+#include <catch2/catch_all.hpp>
+#include <catch2/catch_test_macros.hpp>
+#include <lyra/args.hpp>
+
+#include <sstream>
+#include <string>
+
+using namespace std::string_literals;
+
+namespace wanda::tests::app::wandac
+{
+
+  template<typename ...Ts>
+  auto make_argument_list(Ts const & ... args) -> lyra::args
+  {
+    return {"wanda"s, static_cast<std::string>(args)...};
+  }
+
+  SCENARIO("Empty argument list parsing", "[app][client][cli]")
+  {
+    GIVEN("A fresh cli instance and error stream")
+    {
+      auto cli = ::wandac::cli{};
+      auto error_stream = std::ostringstream{};
+
+      WHEN("invoking parse without any program arguments")
+      {
+        auto result = cli.parse(make_argument_list(), error_stream);
+
+        THEN("the return value is false") { REQUIRE_FALSE(result); }
+        THEN("the error stream is not empty") { REQUIRE_FALSE(error_stream.view().empty()); }
+        THEN("the help flag is not set") { REQUIRE_FALSE(cli.help); }
+        THEN("the command is empty") { REQUIRE(cli.command.empty()); }
+      }
+    }
+  }
+
+  SCENARIO("Valid argument list parsing", "[app][client][cli]")
+  {
+    GIVEN("A fresh cli instance and error stream")
+    {
+      auto cli = ::wandac::cli{};
+      auto error_stream = std::ostringstream{};
+
+      AND_GIVEN("'-h' in the argument list")
+      {
+        auto argument_list = make_argument_list("-h");
+
+        WHEN("invoking parse without additional arguments")
+        {
+          auto result = cli.parse(argument_list, error_stream);
+
+          THEN("the return value is true") { REQUIRE(result); }
+          THEN("the error stream is empty") { REQUIRE(error_stream.view().empty()); }
+          THEN("the help flag is set") { REQUIRE(cli.help); }
+          THEN("the command is empty") { REQUIRE(cli.command.empty()); }
+        }
+      }
+
+      AND_GIVEN("'change' in the argument list")
+      {
+        auto argument_list = make_argument_list("change");
+
+        WHEN("invoking parse without additional arguments")
+        {
+          auto result = cli.parse(argument_list, error_stream);
+
+          THEN("the return valis is true") { REQUIRE(result); }
+          THEN("the error stream is empty") { REQUIRE(error_stream.view().empty()); }
+          THEN("the help flag is not set") { REQUIRE_FALSE(cli.help); }
+          THEN("the command is not empty") { REQUIRE_FALSE(cli.command.empty()); }
+          THEN("the command is 'change'") { REQUIRE(cli.command == "change"); }
+        }
+      }
+    }
+  }
+
+}  // namespace wanda::tests::app::wandac