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

CHANGELOG.md

@@ -32,6 +32,7 @@ breaking release).
 - **The test suite compiles less.** `test/layers/sympnet_upscaling.jl` checks its three symplectic identities on 12 pairs `(N, N2)` instead of all 120 with `N` in `2:2:20` and `N2` in `(2N):2:(4N)`: `(2, 4)`, `(2, 6)`, `(2, 8)`, `(4, 10)`, `(6, 12)`, `(6, 20)`, `(8, 24)`, `(10, 30)`, `(12, 36)`, `(14, 42)`, `(20, 40)` and `(20, 80)`. They keep the smallest pair, `N2 = 2N`, `N2 = 4N`, `N2` not a multiple of `N`, and the largest `N`. The layers carry the sizes in their types, so each pair is a new compilation (about 1.3 s per pair, not once per file as the [0.8.0] entry assumed); the file has 36 assertions instead of 360, and takes 19.7 s cold; it stays in `slow`. The two training tests of `test/loss/training_method_losses.jl` use the network shape of the rest of the file, `StandardHamiltonianArchitecture(2n, 4, 1)` and `LagrangianNeuralNetwork(2; width = 4, nhidden = 1)`, in place of `(2n, 5, 2)` and `width = 5, nhidden = 2`; each still asserts that training reduces the loss. `test/architectures/lagrangian_neural_network_tests.jl` moves from `core` to `slow`: it takes 122.7 s cold, above the 60 s of a `core` file. It still runs in CI and in `Pkg.test()`, and leaves only the local `core` run. Every other `core` file takes at most 37.9 s cold. The times are cold, from one fresh Julia process that runs the `core` files in the order of `test/runtests.jl` (and from one fresh process for each of the two files named), on an Apple M4 Max with Julia 1.13.1, at a load average below 4 at the start.
 - **The optimizer reads `show_progress` as a `Bool`** instead of comparing it with `== true`. A non-`Bool` value now raises a `TypeError`: before, `nothing`, `0` or a string hid the progress bar with no error, and `1` or `1.0` showed it. Every call in the tests and the manual passes `false`, and every call in `scripts/` passes `true`.
 - **fatou reports no finding in `src/` or `test/`.** Only tests and one lint suppression changed; no behaviour of the package changed. `test/layers/multi_head_attention_stiefel_setup.jl` defined `check_setup(ps::NetworkParameters)` twice, and the later method silently replaced the `mapparameters` one, which never ran. The later method is deleted, and the test now asserts that the matrix method of `check_setup` runs once per leaf of the parameters, counted with `foldparameters`. The unused destructured values `Σ`, `Vt` and `Ũ₂` in `test/optimizers/psd_optim.jl` and `test/optimizers/svd_optim.jl` are now `_`; those files check `Ũ₁` and `Ũ₃` and never checked `Ũ₂`. The unreachable `new{…}(…)` after the `error` in the `GeneralizedHamiltonianArchitecture` constructor stays, because it records the field order for the future constructor, under `# fatou-ignore unreachable-code`.
+- **Three test files left the top level of `test/`**, because a test file sits there only where it mirrors `src/<name>.jl`. `test/norm_eltype.jl` tests `_norm` of `src/utils.jl` and is now `test/utils.jl`; `test/map_to_cpu_tests.jl` tests `src/map_to_cpu.jl` and is now `test/map_to_cpu.jl`; `test/documented_defaults.jl` tests the keyword defaults of `src/layers/symplectic_attention.jl`, `src/architectures/symplectic_transformer.jl` and `src/architectures/standard_transformer_integrator.jl`, whose deepest common directory is `src/` itself, and is now `test/integration/documented_defaults.jl`. Only the paths in `test/runtests.jl` changed; the labels, groups and order are the same.
 
 ### Fixed
 

test/runtests.jl

@@ -32,7 +32,7 @@ if "core" in GROUPS
     @safetestset "Linear Symplectic Attention" include("layers/linear_symplectic_attention.jl")
     @safetestset "parameterlength(::MultiHeadAttention{M,M,true}) is exact" include("layers/multi_head_attention_parameterlength.jl")
     @safetestset "compute_output_of_mha infers concretely" include("layers/multi_head_attention_inference.jl")
-    @safetestset "Documented keyword defaults are the constructed ones" include("documented_defaults.jl")
+    @safetestset "Documented keyword defaults are the constructed ones" include("integration/documented_defaults.jl")
     @safetestset "Test setup of transformer with Stiefel weights" include("layers/transformer_setup.jl")
     @safetestset "Sinusoidal positional encoding" include("layers/positional_encoding.jl")
     @safetestset "Check if the transformer can be applied to a tensor." include("layers/transformer_application.jl")
@@ -48,7 +48,7 @@ if "core" in GROUPS
     @safetestset "SymplecticAutoencoder tests" include("architectures/symplectic_autoencoder_tests.jl")
     @safetestset "Check if autoencoder error is lower than PSD error" include("architectures/sae_error_lower_than_psd_error.jl")
     @safetestset "Check reduced model" include("reduced_system/reduced_system.jl")
-    @safetestset "_norm keeps the element type of its argument" include("norm_eltype.jl")
+    @safetestset "_norm keeps the element type of its argument" include("utils.jl")
     @safetestset "Symplectic Euler and variational midpoint losses" include("loss/training_method_losses.jl")
     @safetestset "Test NetworkLoss + Optimizer" include("integration/losses_and_optimization.jl")
     @safetestset "ReducedLoss through the Optimizer functor" include("integration/reduced_loss_optimization.jl")
@@ -63,7 +63,7 @@ if "core" in GROUPS
     @safetestset "The GO-native leaf step scales in the parameter's own element type" include("optimizers/step_size_element_type.jl")
     @safetestset "_custom_mul: NetworkParameters gradient structure" include("layers/double_multiplication_network_parameters_gradient.jl")
     @safetestset "Symplectic attention: NetworkParameters gradient structure" include("layers/symplectic_attention_network_parameters_gradient.jl")
-    @safetestset "map_to_cpu" include("map_to_cpu_tests.jl")
+    @safetestset "map_to_cpu" include("map_to_cpu.jl")
     @safetestset "changebackend" include("integration/changebackend_tests.jl")
     @safetestset "HDF5 save/load for GML special array types" include("integration/hdf5_support.jl")
     @safetestset "Test data loader for q and p data" include("data_loader/batch_data_loader_qp_test.jl")