From 83e8eefec32f69c443accda68dad17855582db4e Mon Sep 17 00:00:00 2001
From: Hendrik Ranocha <mail@ranocha.de>
Date: Wed, 3 Dec 2025 10:53:37 +0100
Subject: [PATCH] fix RealT_for_test_tolerances

---
 src/macros.jl                   |  8 ++++----
 test/test_test_trixi_include.jl | 20 ++++++++++++++++++--
 2 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/src/macros.jl b/src/macros.jl
index 216f665..9abe876 100644
--- a/src/macros.jl
+++ b/src/macros.jl
@@ -67,10 +67,10 @@ macro test_trixi_include_base(elixir, args...)
     # Note: The variables below are just Symbols, not actual errors/types
     local l2 = get_kwarg(args, :l2, nothing)
     local linf = get_kwarg(args, :linf, nothing)
-    local RealT_symbol = get_kwarg(args, :RealT, :Float64)
-    RealT = getfield(@__MODULE__, RealT_symbol)
-    atol_default = 500 * eps(RealT)
-    rtol_default = sqrt(eps(RealT))
+    local RealT_symbol = get_kwarg(args, :RealT_for_test_tolerances, :Float64)
+    RealT_for_test_tolerances = getfield(@__MODULE__, RealT_symbol)
+    atol_default = 500 * eps(RealT_for_test_tolerances)
+    rtol_default = sqrt(eps(RealT_for_test_tolerances))
     local atol = get_kwarg(args, :atol, atol_default)
     local rtol = get_kwarg(args, :rtol, rtol_default)
 
diff --git a/test/test_test_trixi_include.jl b/test/test_test_trixi_include.jl
index 1418077..bc3e22a 100644
--- a/test/test_test_trixi_include.jl
+++ b/test/test_test_trixi_include.jl
@@ -193,6 +193,24 @@ end
         end
     end
 
+    @trixi_testset "l2 and linf with RealT_for_test_tolerances" begin
+        example = """
+            function analysis_callback(sol)
+            @show sol
+            return sol[1], sol[2]
+            end
+            sol = [1.2345678901234567, 7.6543210987654321]
+            """
+
+        mktemp() do path, io
+            write(io, example)
+            close(io)
+
+            @test_trixi_include_base(path, l2=1.2345, linf=7.6543,
+                                     RealT_for_test_tolerances=Float32)
+        end
+    end
+
     @trixi_testset "maxiters" begin
         example = """
             maxiters = 4
@@ -208,8 +226,6 @@ end
         end
     end
 
-    # RealT is used internally to compute error tolerances when l2 or linf are used
-    # However, it should also be forwarded as a keyword argument to trixi_include
     @trixi_testset "RealT" begin
         example = """
             RealT = Float64