Move test and benchmark targets to standard Cargo autodiscovery layout. (#7436)

This will make it easier for contributors to understand the file layout,
at the cost of said layout containing several more nested directories.
I will personally appreciate not having to remember to look for
`root.rs` instead of `main.rs`.

I also renamed the test targets so that they do not *all* share the
superfluous suffix “-test” (test targets live in a different namespace
than other target types and packages, so the name can presume that it
is always known that they are tests).

The Naga snapshot data sets `naga/tests/{in,out}` have been left in
their original positions.

benches/Cargo.toml

@@ -9,13 +9,11 @@ repository.workspace = true
 keywords.workspace = true
 license.workspace = true
 rust-version.workspace = true
-autobenches = false
 publish = false
 
 [[bench]]
 name = "wgpu-benchmark"
 harness = false
-path = "benches/root.rs"
 
 [features]
 # Uncomment these features to enable tracy and superluminal profiling.

benches/benches/wgpu-benchmark/shader.rs

@@ -15,6 +15,7 @@ struct Inputs {
 }
 
 impl Inputs {
+    #[track_caller]
     fn from_dir(folder: &str, extension: &str) -> Self {
         let mut inputs = Vec::new();
         let read_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"))

docs/testing.md

@@ -36,10 +36,10 @@ This is a table of contents, in the form of the repository's directory structure
 - player
    - [tests](#player-tests)
 - tests
-   - [compile-tests](#wgpu-compile-tests)
-   - [dependency-tests](#wgpu-dependency-tests)
-   - [gpu-tests](#wgpu-gpu-tests)
-   - [validation-tests](#wgpu-validation-tests)
+   - [compile](#wgpu-compile-tests)
+   - [dependency](#wgpu-dependency-tests)
+   - [gpu](#wgpu-gpu-tests)
+   - [validation](#wgpu-validation-tests)
 
 And where applicable [unit-tests](#unit-tests)
 are scatteredthroughout the codebase.
@@ -84,16 +84,16 @@ they should be easy to copy into a standalone project.
 
 ## `naga` Example Tests
 
-- Located in: `naga/tests/example_wgsl`
-- Run with `cargo nextest run --test naga-test example_wgsl`
+- Located in: `naga/tests/naga/example_wgsl`
+- Run with `cargo nextest run --test naga example_wgsl`
 
 This simple test ensures that all wgsl files in the `examples`
 directory can be parsed by `naga`'s `wgsl` parser and validate correctly.
 
 ## `naga` Snapshot Tests
 
-- Located in: `naga/tests/snapshot`, `naga/tests/in`, and `naga/tests/out`
-- Run with `cargo nextest run --test naga-test snapshots`
+- Located in: `naga/tests/naga/snapshot`, `naga/tests/in`, and `naga/tests/out`
+- Run with `cargo nextest run --test naga snapshots`
 - Data driven snapshot tests for `naga`'s input/output.
 
 These tests are snapshot tests for `naga`s parsers and code generators.
@@ -118,8 +118,8 @@ will use the respective tool to validate the generated code.
 
 ## `naga` SPIR-V Capabilities Tests
 
-- Located in: `naga/tests/spirv_capabilities`
-- Run with `cargo nextest run --test naga-test spirv_capabilities`
+- Located in: `naga/tests/naga/spirv_capabilities`
+- Run with `cargo nextest run --test naga spirv_capabilities`
 - Uses the standard `#[test]` harness.
 
 These tests convert the given wgsl snippet to spirv and
@@ -127,8 +127,8 @@ then assert that the spirv has enabled the expected capabilities.
 
 ## `naga` Validation Tests
 
-- Located in: `naga/tests/validation`
-- Run with `cargo nextest run --test naga-test validation`
+- Located in: `naga/tests/naga/validation`
+- Run with `cargo nextest run --test naga validation`
 
 These are hand rolled tests against the naga's validator.
 If you don't need to test the validator with a custom module,
@@ -137,8 +137,8 @@ the [wgsl errors](#naga-wgsl-error-tests) tests.
 
 ## `naga` WGSL Error Tests
 
-- Located in: `naga/tests/wgsl_errors`
-- Run with `cargo nextest run --test naga-test wgsl_errors`
+- Located in: `naga/tests/naga/wgsl_errors`
+- Run with `cargo nextest run --test naga wgsl_errors`
 
 These are tests for the error messages that the `wgsl` frontend
 produces. Additionally you can check that a given validation error
@@ -147,7 +147,7 @@ is produced by the validator from a given `wgsl` snippet.
 ## `player` Tests
 
 - Located in: `player/tests`
-- Run with `cargo nextest run --test player-test`
+- Run with `cargo nextest run --test player`
 - Data driven tests using the `player`'s replay system.
 - `wgpu` integration tests.
 
@@ -161,9 +161,9 @@ These tests only run on your system's default GPU.
 
 ## `wgpu` Compile Tests
 
-- Located in: `tests/compile-tests`
-- Run with `cargo nextest run --test wgpu-compile-test`
-- `trybuild` tests of all rust files in `tests/compile-tests/fail` directory.
+- Located in: `tests/tests/wgpu-compile`
+- Run with `cargo nextest run --test wgpu-compile`
+- `trybuild` tests of all rust files in `tests/tests/wgpu-compile/fail` directory.
 
 These use the `trybuild` crate to test a few scenarios where
 the `wgpu` crate is expected to fail to compile. This mainly
@@ -172,8 +172,8 @@ dropping passes, etc.
 
 ## `wgpu` Dependency Tests
 
-- Located in: `tests/dependency-tests`
-- Run with `cargo nextest run --test wgpu-dependency-test`
+- Located in: `tests/tests/wgpu-dependency`
+- Run with `cargo nextest run --test wgpu-dependency`
 - Tests against `cargo tree`.
 
 These tests ensure that the `wgpu` crate has the correct dependency
@@ -184,8 +184,8 @@ This provides a way to ensure that our `toml` files are correct.
 
 ## `wgpu` GPU Tests
 
-- Located in: `tests/gpu-tests`
-- Run with `cargo xtask test --test wgpu-gpu-test`
+- Located in: `tests/tests/wgpu-gpu`
+- Run with `cargo xtask test --test wgpu-gpu`
 - Uses a custom `#[gpu_test]` harness.
 - `wgpu` integration tests, with access to `wgpu_test` helpers.
 
@@ -209,8 +209,8 @@ See also the [example tests](#example-tests) for additional GPU tests.
 
 ## `wgpu` Validation Tests
 
-- Located in: `tests/validation-tests`
-- Run with `cargo nextest run --test wgpu-validation-test`
+- Located in: `tests/tests/wgpu-validation`
+- Run with `cargo nextest run --test wgpu-validation`
 - Use the standard `#[test]` harness.
 - `wgpu` integration tests, with access to `wgpu_test` helpers.
 

naga/.gitattributes

@@ -1 +1 @@
-tests/out/**/* text eol=lf
+tests/naga/out/**/* text eol=lf

naga/Cargo.toml

@@ -9,7 +9,6 @@ keywords = ["shader", "SPIR-V", "GLSL", "MSL"]
 license = "MIT OR Apache-2.0"
 exclude = ["bin/**/*", "tests/**/*", "Cargo.lock", "target/**/*"]
 resolver = "2"
-autotests = false
 
 # Override the workspace's `rust-version` key. Firefox uses `cargo vendor` to
 # copy the crates it actually uses out of the workspace, so it's meaningful for
@@ -17,10 +16,6 @@ autotests = false
 # whole, if their code permits. See `../README.md` for details.
 rust-version = "1.82.0"
 
-[[test]]
-name = "naga-test"
-path = "tests/root.rs"
-
 [package.metadata.docs.rs]
 all-features = true
 

player/Cargo.toml

@@ -12,19 +12,12 @@ rust-version.workspace = true
 publish = false
 
 [lib]
-name = "player"
-path = "src/lib.rs"
 test = false
 
 [[bin]]
 name = "play"
-path = "src/bin/play.rs"
 test = false
 
-[[test]]
-name = "player-test"
-path = "tests/root.rs"
-
 [dependencies]
 wgpu-types = { workspace = true, features = ["serde"] }
 

player/tests/player/main.rs

@@ -246,5 +246,5 @@ impl Corpus {
 fn test_api() {
     env_logger::init();
 
-    Corpus::run_from(PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("tests/data/all.ron"))
+    Corpus::run_from(PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("tests/player/data/all.ron"))
 }

tests/Cargo.toml

@@ -9,27 +9,22 @@ repository.workspace = true
 keywords.workspace = true
 license.workspace = true
 rust-version.workspace = true
-autotests = false
 publish = false
 
 [[test]]
-name = "wgpu-compile-test"
-path = "compile-tests/root.rs"
+name = "wgpu-compile"
 harness = true
 
 [[test]]
-name = "wgpu-dependency-test"
-path = "dependency-tests/root.rs"
+name = "wgpu-dependency"
 harness = true
 
 [[test]]
-name = "wgpu-gpu-test"
-path = "gpu-tests/root.rs"
+name = "wgpu-gpu"
 harness = false
 
 [[test]]
-name = "wgpu-validation-test"
-path = "validation-tests/root.rs"
+name = "wgpu-validation"
 harness = true
 
 [features]