From e25b1c744dad7daa561ee0b23b006bc616f88f23 Mon Sep 17 00:00:00 2001
From: "Y. Wang" <yw05@forksworld.de>
Date: Sun, 26 Mar 2023 11:53:00 +0200
Subject: Cancel type 2 signals; introduce signal groups for all signals

---
 advtrains_interlocking/spec/signal_group_spec.lua | 95 +++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 advtrains_interlocking/spec/signal_group_spec.lua

(limited to 'advtrains_interlocking/spec/signal_group_spec.lua')

diff --git a/advtrains_interlocking/spec/signal_group_spec.lua b/advtrains_interlocking/spec/signal_group_spec.lua
new file mode 100644
index 0000000..bc9d007
--- /dev/null
+++ b/advtrains_interlocking/spec/signal_group_spec.lua
@@ -0,0 +1,95 @@
+require "mineunit"
+mineunit("core")
+
+_G.advtrains = {
+	interlocking = {
+		aspect = sourcefile("aspect"),
+	},
+	ndb = {
+		get_node = minetest.get_node,
+		swap_node = minetest.swap_node,
+	}
+}
+
+fixture("advtrains_helpers")
+sourcefile("database")
+sourcefile("signal_api")
+sourcefile("distant")
+sourcefile("signal_aspect_accessors")
+
+local A = advtrains.interlocking.aspect
+local D = advtrains.distant
+local I = advtrains.interlocking
+local N = advtrains.ndb
+
+local groupdef = {
+	name = "foo",
+	aspects = {
+		proceed = {main = -1},
+		caution = {},
+		danger = {main = 0},
+		"proceed",
+		{"caution"},
+		"danger",
+	},
+}
+
+for k, v in pairs(groupdef.aspects) do
+	minetest.register_node("advtrains_interlocking:" .. k, {
+		advtrains = {
+			supported_aspects = {
+				group = "foo",
+			},
+			get_aspect = function() return A{group = "foo", name = k} end,
+			set_aspect = function(pos, _, name)
+				N.swap_node(pos, {name = "advtrains_interlocking:" .. name})
+			end,
+		}
+	})
+end
+
+local origin = vector.new(0, 0, 0)
+local dstpos = vector.new(0, 0, 1)
+
+world.layout {
+	{origin, "advtrains_interlocking:danger"},
+	{dstpos, "advtrains_interlocking:proceed"},
+}
+
+describe("signal group registration", function()
+	it("should work", function()
+		A.register_group(groupdef)
+		assert(A.get_group_definition("foo"))
+	end)
+	it("should only be allowed once for the same group", function()
+		assert.has.errors(function() A.register_group(type2def) end)
+	end)
+	it("should handle nonexistant groups", function()
+		assert.is_nil(A.get_group_definition("something_else"))
+	end)
+	it("should reject invalid definitions", function()
+		assert.has.errors(function() A.register_group({}) end)
+		assert.has.errors(function() A.register_group({name="",label={}}) end)
+		assert.has.errors(function() A.register_group({name="",aspects={}}) end)
+	end)
+end)
+
+describe("signal aspect", function()
+	it("should handle empty fields properly", function()
+		assert.equal(A{main = 0}, A{group="foo", name="danger"}:to_group())
+	end)
+	it("should be converted properly", function()
+		assert.equal(A{main = 0}, A{group="foo", name="danger"})
+		assert.equal(A{}, A{group="foo", name="caution"})
+		assert.equal(A{main = -1}, A{group="foo", name="proceed"})
+	end)
+end)
+
+describe("signals in groups", function()
+	it("should support distant signaling", function()
+		assert.equal("caution", A():adjust_distant(A{group="foo",name="danger"}).name)
+		assert.equal("proceed", A():adjust_distant(A{group="foo",name="caution"}).name)
+		assert.equal("proceed", A():adjust_distant(A{group="foo",name="proceed"}).name)
+		assert.equal("danger", A{group="foo",name="danger"}:adjust_distant{}.name)
+	end)
+end)
-- 
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