Implemented a few basic tests and ideas for future ones

src/constants.zig

@@ -5,7 +5,6 @@ pub const WIDTH = 1366;
 /// Screen Height
 pub const HEIGHT = 768;
 pub const BACKGROUND_COLOR = clr.light_gray;
-pub const ALLOC_SIZE = 50;
 
 /// Base node radius
 pub const NODE_RADIUS = 20;

src/infrastructure/node.zig

@@ -41,3 +41,9 @@ pub const Node = struct {
         try self.roads.append(allocator, road_to_add);
     }
 };
+
+// TODO tests
+// road reference test
+// pos within node test
+// deinit test
+// roads ptr list test

src/infrastructure/node_manager.zig

@@ -74,3 +74,31 @@ pub const NodeManager = struct {
         self.next_id = 0;
     }
 };
+
+const expect = std.testing.expect;
+
+test "id tracking" {
+    var gpa: std.heap.DebugAllocator(.{}) = .init;
+    defer _ = gpa.deinit();
+    const allocator = gpa.allocator();
+
+    var node_man: NodeManager = .init();
+    defer node_man.deinit(allocator);
+    const n = 5;
+
+    for (0..n) |_| {
+        const node: Node = .init(node_man.getNextID(), Vector2 {
+            .x = 500,
+            .y = 500,
+        });
+        const node_ptr = try allocator.create(Node);
+        node_ptr.* = node;
+        try node_man.nodes.append(allocator, node_ptr);
+    }
+
+    try expect(node_man.next_id == n);
+    try expect(node_man.nodes.items.len == n);
+}
+
+// TODO tests
+// force resize pointer test

src/infrastructure/road.zig

@@ -1,6 +1,4 @@
-const std = @import("std");
 const rl = @import("raylib");
-const expect = std.testing.expect;
 
 const c = @import("../constants.zig");
 const Node = @import("node.zig").Node;
@@ -41,6 +39,9 @@ pub const Road = struct {
     }
 };
 
+const std = @import("std");
+const expect = std.testing.expect;
+
 test "valid road nodes" {
     var gpa: std.heap.DebugAllocator(.{}) = .init;
     defer _ = gpa.deinit();
@@ -64,5 +65,6 @@ test "valid road nodes" {
 
     const road: Road = .init(11, start_ptr, end_ptr);
 
-    try expect(road.nodes[0].id == 34 and road.nodes[1].id == 227);
+    try expect(road.nodes[0].id == 34);
+    try expect(road.nodes[1].id == 227);
 }

src/infrastructure/road_manager.zig

@@ -52,3 +52,43 @@ pub const RoadManager = struct {
         self.next_id = 0;
     }
 };
+
+const Vector2 = @import("raylib").Vector2;
+const expect = std.testing.expect;
+
+test "id tracking" {
+    var gpa: std.heap.DebugAllocator(.{}) = .init;
+    defer _ = gpa.deinit();
+    const allocator = gpa.allocator();
+
+    var road_man: RoadManager = .init();
+    defer road_man.deinit(allocator);
+    const n = 5;
+
+    const start: Node = .init(0, .{.x = 0, .y = 0});
+    const start_ptr = try allocator.create(Node);
+    start_ptr.* = start;
+
+    const end: Node = .init(1, .{.x = 100, .y = 100});
+    const end_ptr = try allocator.create(Node);
+    end_ptr.* = end;
+
+    defer {
+        start_ptr.deinit(allocator);
+        end_ptr.deinit(allocator);
+
+        allocator.destroy(start_ptr);
+        allocator.destroy(end_ptr);
+    }
+
+    for (0..n) |_| {
+        try road_man.addRoad(allocator, start_ptr, end_ptr);
+    }
+
+    try expect(road_man.next_id == n);
+    try expect(road_man.roads.items.len == n);
+}
+
+// TODO tests
+// force resize pointer test
+// destroy road and then verify the nodes do not have a pointer to it

src/test.zig

@@ -1,3 +1,5 @@
 test {
     _ = @import("infrastructure/road.zig");
+    _ = @import("infrastructure/node_manager.zig");
+    _ = @import("infrastructure/road_manager.zig");
 }