test: add transmission game tests

Author: MrTJP

transmission/build.gradle

@@ -14,6 +14,23 @@ neoForge {
             data()
             programArguments.addAll '--mod', mod_id, '--all', '--output', file("src/main/generated").absolutePath, '--existing', file("src/main/resources").absolutePath
         }
+
+        gameTestServer {
+            type = "gameTestServer"
+            gameDirectory = project.file('runs/gameTestServer')
+            systemProperty 'neoforge.enableGameTest', 'true'
+            systemProperty 'neoforge.enabledGameTestNamespaces', mod_id
+        }
+
+        configureEach {
+            logLevel = org.slf4j.event.Level.DEBUG
+        }
+    }
+
+    mods {
+        "${mod_id}" {
+            sourceSet(sourceSets.main)
+        }
     }
 }
 

transmission/src/main/java/mrtjp/projectred/transmission/gametests/RedwirePropagationTests.java

@@ -0,0 +1,68 @@
+package mrtjp.projectred.transmission.gametests;
+
+import mrtjp.projectred.transmission.ProjectRedTransmission;
+import net.minecraft.core.BlockPos;
+import net.minecraft.gametest.framework.GameTest;
+import net.minecraft.gametest.framework.GameTestHelper;
+import net.minecraft.world.level.block.LeverBlock;
+import net.minecraft.world.level.block.RedstoneLampBlock;
+import net.neoforged.neoforge.gametest.GameTestHolder;
+import net.neoforged.neoforge.gametest.PrefixGameTestTemplate;
+
+@GameTestHolder(ProjectRedTransmission.MOD_ID)
+@PrefixGameTestTemplate(false)
+public class RedwirePropagationTests {
+
+    @GameTest(template = "alloy_rw_wraparound_rs_block")
+    public static void redAlloyPropagatesAroundRSBlock(GameTestHelper helper) {
+        // Red alloy wires should propagate signal around a redsone block,
+        // and also power the lamp underneath
+
+        // Positions
+        var lever = new BlockPos(0, 2, 1);
+        var lampA = new BlockPos(3, 2, 1);
+        var lampB = new BlockPos(6, 2, 1);
+
+        // Assert start condition
+        helper.assertBlockState(lever, state -> !state.getValue(LeverBlock.POWERED), () -> "Lever should be off!");
+        helper.assertBlockState(lampA, state -> !state.getValue(RedstoneLampBlock.LIT), () -> "Lamp should be off!");
+        helper.assertBlockState(lampB, state -> !state.getValue(RedstoneLampBlock.LIT), () -> "Lamp should be off!");
+
+        // Pull lever, wait 2 ticks, then check lamp states
+        helper.startSequence()
+                .thenExecute(() -> helper.setBlock(lever, helper.getBlockState(lever).setValue(LeverBlock.POWERED, true)))
+                .thenIdle(2)
+                .thenExecute(() -> {
+                    helper.assertBlockState(lever, state -> state.getValue(LeverBlock.POWERED), () -> "Lever should be on!");
+                    helper.assertBlockState(lampA, state -> state.getValue(RedstoneLampBlock.LIT), () -> "Lamp A should be on!");
+                    helper.assertBlockState(lampB, state -> state.getValue(RedstoneLampBlock.LIT), () -> "Lamp B should be on!");
+                }).thenSucceed();
+   }
+
+    @GameTest(template = "insulated_rw_wraparound_rs_block")
+    public static void insulatedWirePropagatesAroundRSBlock(GameTestHelper helper) {
+        // Insulated wires should propagate signal around a redsone block,
+        // but NOT power the lamp underneath
+
+        // Positions
+        var lever = new BlockPos(0, 2, 1);
+        var lampA = new BlockPos(3, 2, 1);
+        var lampB = new BlockPos(6, 2, 1);
+
+        // Assert start condition
+        helper.assertBlockState(lever, state -> !state.getValue(LeverBlock.POWERED), () -> "Lever should be off!");
+        helper.assertBlockState(lampA, state -> !state.getValue(RedstoneLampBlock.LIT), () -> "Lamp should be off!");
+        helper.assertBlockState(lampB, state -> !state.getValue(RedstoneLampBlock.LIT), () -> "Lamp should be off!");
+
+        // Pull lever, wait 2 ticks, then check lamp states
+        helper.startSequence()
+                .thenExecute(() -> helper.setBlock(lever, helper.getBlockState(lever).setValue(LeverBlock.POWERED, true)))
+                .thenIdle(2)
+                .thenExecute(() -> {
+                    helper.assertBlockState(lever, state -> state.getValue(LeverBlock.POWERED), () -> "Lever should be on!");
+                    helper.assertBlockState(lampA, state -> !state.getValue(RedstoneLampBlock.LIT), () -> "Lamp A should be off!");
+                    helper.assertBlockState(lampB, state -> state.getValue(RedstoneLampBlock.LIT), () -> "Lamp B should be on!");
+                }).thenSucceed();
+    }
+
+}