change repair_tool application and add beams for salvager and repair_tool

src/test/ScrapTest.cpp

@@ -93,6 +93,38 @@ TEST_CASE("ScrapSystem: consume returns nullopt for invalid entity", "[scrap]")
     REQUIRE_FALSE(amount.has_value());
 }
 
+// ---------------------------------------------------------------------------
+// collectOne
+// ---------------------------------------------------------------------------
+
+TEST_CASE("ScrapSystem: collectOne depletes one scrap and keeps the pile until empty", "[scrap]")
+{
+    EntityAdmin admin;
+    ScrapSystem ss(admin);
+
+    const entt::entity e = ss.spawn(QVector2D(0.0f, 0.0f), 3, 100);
+
+    REQUIRE(ss.collectOne(e));
+    REQUIRE(admin.isValid(e));
+    REQUIRE(admin.get<ScrapDataComponent>(e).amount == 2);
+
+    REQUIRE(ss.collectOne(e));
+    REQUIRE(admin.isValid(e));
+    REQUIRE(admin.get<ScrapDataComponent>(e).amount == 1);
+
+    // Final unit collected: the pile is removed once depleted.
+    REQUIRE(ss.collectOne(e));
+    REQUIRE_FALSE(admin.isValid(e));
+}
+
+TEST_CASE("ScrapSystem: collectOne returns false for an invalid entity", "[scrap]")
+{
+    EntityAdmin admin;
+    ScrapSystem ss(admin);
+
+    REQUIRE_FALSE(ss.collectOne(entt::null));
+}
+
 // ---------------------------------------------------------------------------
 // allScrapInfo
 // ---------------------------------------------------------------------------