Move the top-level test files that mirror no source file

CHANGELOG.md

@@ -17,6 +17,12 @@ job saves the Julia cache only when it succeeds.
   In CI the Doctests job stays their runner, so the test matrix no longer runs them a second
   time.
 
+`test/basis.jl` moved to `test/integration/basis.jl`. The test convention keeps a test file at
+the top level of `test/` only where it mirrors `src/<name>.jl`, and there is no
+`src/basis.jl`: the file tests clamped and recombined bases across `src/bspline.jl`,
+`src/recombined.jl`, `src/boundary.jl`, `src/mesh.jl`, `src/quadrature.jl`, `src/mass.jl`,
+`src/spline.jl` and `src/tensorproduct.jl`.
+
 ## [0.3.2] — 2026-10-03
 
 ### Bug Fixes

scripts/local_evaluation_agreement.jl

@@ -1,5 +1,5 @@
 # How closely `evaluate(b, û, x, d)` agrees with a sum over the whole basis, and therefore
-# what kind of tolerance the test in `test/basis.jl` may use.
+# what kind of tolerance the test in `test/integration/basis.jl` may use.
 #
 # `evaluate(b, û, x, d)` sums the local block of `local_width(b)` functions, obtained from
 # de Boor's triangular scheme plus derivative lifting. The reference sums `û[j] * evaluate(b,

test/quality/jet.jl

@@ -10,7 +10,7 @@ using Test
 # (`op \ b32` on a `CirculantMass{Float32}`, test/mass.jl) gets none.
 
 if isdefined(JET, :JET_AVAILABLE) ? JET.JET_AVAILABLE : JET.JET_LOADABLE
-    # test/basis.jl: evaluate_all! on a free and a Dirichlet bounded basis and a periodic basis
+    # test/integration/basis.jl: evaluate_all! on a free and a Dirichlet bounded basis and a periodic basis
     b = BSplineBasis(UniformMesh(32, -10 .. 10), 3)
     br = BSplineBasis(UniformMesh(32, -10 .. 10), 3, Dirichlet())
     bp = BSplineBasis(UniformMesh(32, 0 .. 2π), 3, Periodic())
@@ -29,7 +29,7 @@ if isdefined(JET, :JET_AVAILABLE) ? JET.JET_AVAILABLE : JET.JET_LOADABLE
     @test isempty(JET.get_reports(JET.report_opt(evaluate,
         (typeof(B), Array{Float64, 3}, NTuple{3, Float64});
         target_modules = (SimpleSplines,))))
-    # test/basis.jl: complex coefficients on a 2-D tensor product, with a derivative order
+    # test/integration/basis.jl: complex coefficients on a 2-D tensor product, with a derivative order
     B2 = BSplineBasis(UniformMesh(6, 0 .. 1), 3) ⊗ BSplineBasis(UniformMesh(5, 0 .. 1), 3)
     @test isempty(JET.get_reports(JET.report_opt(evaluate,
         (typeof(B2), Matrix{ComplexF64}, NTuple{2, Float64}, NTuple{2, Int});

test/runtests.jl

@@ -8,7 +8,7 @@ if "core" in GROUPS
     @safetestset "Meshes" include("mesh.jl")
     @safetestset "Boundary conditions" include("boundary.jl")
     @safetestset "Periodic B-spline bases" include("bspline.jl")
-    @safetestset "Clamped and recombined bases" include("basis.jl")
+    @safetestset "Clamped and recombined bases" include("integration/basis.jl")
     @safetestset "Mass operators" include("mass.jl")
     @safetestset "Spline quadrature" include("quadrature.jl")
     @safetestset "Tensor products" include("tensorproduct.jl")