diff --git a/test/test_p4est_2d.jl b/test/test_p4est_2d.jl
index cc46f1c0689..c3c844b9ee7 100644
--- a/test/test_p4est_2d.jl
+++ b/test/test_p4est_2d.jl
@@ -365,8 +365,8 @@ end
         # Run without coverage takes 85 time steps.
         @test startswith(lines[end], "85, 0.3, 1.0, 0.57771")
     end
-    @test length(split(lines[end], ",")) == 4
-    @test any(occursin.(r"NaN", lines)) == false
+    @test count(",", lines[end]) == 3
+    @test !any(occursin.(r"NaN", lines))
     # Ensure that we do not have excessive memory allocations
     # (e.g., from type instabilities)
     let
diff --git a/test/test_structured_2d.jl b/test/test_structured_2d.jl
index c30583d20d1..1e797e2015c 100644
--- a/test/test_structured_2d.jl
+++ b/test/test_structured_2d.jl
@@ -749,8 +749,8 @@ end
         # Run without coverage takes 193 time steps.
         @test startswith(lines[end], "193, 0.05, 1.0, 0.3160")
     end
-    @test length(split(lines[end], ",")) == 4
-    @test any(occursin.(r"NaN", lines)) == false
+    @test count(",", lines[end]) == 3
+    @test !any(occursin.(r"NaN", lines))
     # Ensure that we do not have excessive memory allocations
     # (e.g., from type instabilities)
     let
@@ -797,8 +797,8 @@ end
         # Run without coverage takes 191 time steps.
         @test startswith(lines[end], "191, 0.05, 3.70")
     end
-    @test length(split(lines[end], ",")) == 10
-    @test any(occursin.(r"NaN", lines)) == false
+    @test count(",", lines[end]) == 9
+    @test !any(occursin.(r"NaN", lines))
 
     # Test alphas_min.txt
     lines = readlines(joinpath("out", "alphas_min.txt"))
@@ -811,8 +811,8 @@ end
         # Run without coverage takes 191 time steps.
         @test startswith(lines[end], "191, 0.05, -0.0, 0.7216")
     end
-    @test length(split(lines[end], ",")) == 10
-    @test any(occursin.(r"NaN", lines)) == false
+    @test count(",", lines[end]) == 9
+    @test !any(occursin.(r"NaN", lines))
     # Ensure that we do not have excessive memory allocations
     # (e.g., from type instabilities)
     let
diff --git a/test/test_tree_2d_euler.jl b/test/test_tree_2d_euler.jl
index 54e70804762..2874439b47b 100644
--- a/test/test_tree_2d_euler.jl
+++ b/test/test_tree_2d_euler.jl
@@ -576,8 +576,8 @@ end
         # Run without coverage takes 381 time steps.
         @test startswith(lines[end], "381, 1.0, 1.0, 0.544")
     end
-    @test length(split(lines[end], ",")) == 4
-    @test any(occursin.(r"NaN", lines)) == false
+    @test count(",", lines[end]) == 3
+    @test !any(occursin.(r"NaN", lines))
     # Ensure that we do not have excessive memory allocations
     # (e.g., from type instabilities)
     let
@@ -639,8 +639,8 @@ end
         # Run without coverage takes 349 time steps.
         @test startswith(lines[end], "349, 1.0, 0.0002")
     end
-    @test length(split(lines[end], ",")) == 14
-    @test any(occursin.(r"NaN", lines)) == false
+    @test count(",", lines[end]) == 13
+    @test !any(occursin.(r"NaN", lines))
 
     # Test alphas_min.txt
     lines = readlines(joinpath("out", "alphas_min.txt"))
@@ -653,8 +653,8 @@ end
         # Run without coverage takes 349 time steps.
         @test startswith(lines[end], "349, 1.0, -0.0, 0.773")
     end
-    @test length(split(lines[end], ",")) == 14
-    @test any(occursin.(r"NaN", lines)) == false
+    @test count(",", lines[end]) == 13
+    @test !any(occursin.(r"NaN", lines))
     # Ensure that we do not have excessive memory allocations
     # (e.g., from type instabilities)
     let