From 55fd3f197ace6711a8996770ccd92f7ee111d42b Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Wed, 22 Apr 2026 17:54:56 +0200
Subject: [PATCH] auto-git:  [change]
 tests/unit/world-background-renderer.test.ts

---
 tests/unit/world-background-renderer.test.ts | 45 ++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/tests/unit/world-background-renderer.test.ts b/tests/unit/world-background-renderer.test.ts
index 4647bcd9..a612eb96 100644
--- a/tests/unit/world-background-renderer.test.ts
+++ b/tests/unit/world-background-renderer.test.ts
@@ -6,6 +6,7 @@ import {
   resolveWorldCelestialBodiesState,
   resolveWorldEnvironmentState
 } from "../../src/rendering/world-background-renderer";
+import type { WorldShaderSkyRenderState } from "../../src/rendering/world-shader-sky";
 
 describe("resolveWorldEnvironmentState", () => {
   it("keeps the authored day environment when no night overlay is active", () => {
@@ -127,6 +128,50 @@ describe("resolveWorldEnvironmentState", () => {
       intensity: 0.35
     });
   });
+
+  it("uses a shader-derived environment texture when shader mode is active", () => {
+    const world = createDefaultWorldSettings();
+    const shaderTexture = new Texture();
+    const shaderState = {
+      presetId: "defaultSky",
+      time: {
+        dayCount: 0,
+        timeOfDayHours: 12,
+        dayPhase: "day",
+        daylightFactor: 1,
+        twilightFactor: 0,
+        phaseWeights: {
+          day: 1,
+          dawn: 0,
+          dusk: 0,
+          night: 0
+        }
+      }
+    } as unknown as WorldShaderSkyRenderState;
+    const shaderEnvironmentTextureResolver = {
+      resolveEnvironmentTexture: vi.fn().mockReturnValue(shaderTexture)
+    };
+    world.background = {
+      mode: "shader"
+    };
+
+    const environment = resolveWorldEnvironmentState(
+      world.background,
+      null,
+      null,
+      null,
+      shaderState,
+      shaderEnvironmentTextureResolver
+    );
+
+    expect(
+      shaderEnvironmentTextureResolver.resolveEnvironmentTexture
+    ).toHaveBeenCalledWith(shaderState);
+    expect(environment).toEqual({
+      texture: shaderTexture,
+      intensity: 1
+    });
+  });
 });
 
 describe("resolveWorldCelestialBodiesState", () => {