Test minimal versions

Move testing crates into `test-crates`

Author: daxpedda

.github/workflows/test.yml

@@ -92,3 +92,35 @@ jobs:
       - name: Build
         run:
           cargo build --target thumbv6m-none-eabi ${{ matrix.features }} -p ensure-no-std
+
+  minimal-versions:
+    name: Minimal Versions
+
+    strategy:
+      fail-fast: false
+      matrix:
+        rust:
+          - version: 1.57.0
+            features: safe,zeroize-on-drop
+          - version: stable
+            features: safe,zeroize-on-drop
+          - version: nightly
+            features: nightly,safe,zeroize-on-drop
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Update Rust
+        run: |
+          rustup toolchain install ${{ matrix.rust.version }} --profile minimal --allow-downgrade
+          rustup default ${{ matrix.rust.version }}
+      - name: Install nightly Rust
+        run:
+          rustup toolchain install nightly --profile minimal --allow-downgrade
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Build
+        working-directory: test-crates/minimal-versions
+        run: |
+          cargo +nightly update -Z minimal-versions
+          cargo build --features ${{ matrix.rust.features }}

.gitignore

@@ -1,2 +1,2 @@
 /target
-Cargo.lock
+/Cargo.lock

Cargo.toml

@@ -1,6 +1,6 @@
 [workspace]
 default-members = [""]
-members = ["", "crate_", "ensure-no-std"]
+members = ["", "test-crates/crate_", "test-crates/ensure-no-std"]
 resolver = "2"
 
 [package]
@@ -29,7 +29,7 @@ zeroize-on-drop = ["zeroize"]
 [dependencies]
 proc-macro2 = { version = "1", default-features = false, features = ["proc-macro"] }
 quote = { version = "1", default-features = false }
-syn = { version = "1", default-features = false, features = [
+syn = { version = "1.0.56", default-features = false, features = [
 	"clone-impls",
 	"derive",
 	"extra-traits",
@@ -39,7 +39,7 @@ syn = { version = "1", default-features = false, features = [
 ] }
 
 [dev-dependencies]
-trybuild = { version = "1", default-features = false }
+trybuild = { version = "1.0.18", default-features = false }
 zeroize_ = { version = "1.5", package = "zeroize", default-features = false }
 
 [[test]]

crate_/Cargo.toml renamed to test-crates/crate_/Cargo.toml

@@ -11,7 +11,7 @@ zeroize = ["derive-where_/zeroize", "zeroize_"]
 zeroize-on-drop = ["derive-where_/zeroize-on-drop", "zeroize"]
 
 [dependencies]
-derive-where_ = { path = "..", package = "derive-where" }
+derive-where_ = { path = "../..", package = "derive-where" }
 zeroize_ = { version = "1.5", package = "zeroize", default-features = false, optional = true }
 
 [lib]

crate_/src/lib.rs renamed to test-crates/crate_/src/lib.rs

@@ -11,7 +11,7 @@ zeroize = ["derive-where/zeroize", "zeroize_"]
 zeroize-on-drop = ["derive-where/zeroize-on-drop", "zeroize"]
 
 [dependencies]
-derive-where = { path = ".." }
+derive-where = { path = "../.." }
 zeroize_ = { version = "1.5", package = "zeroize", default-features = false, optional = true }
 
 [lib]

ensure-no-std/Cargo.toml renamed to test-crates/ensure-no-std/Cargo.toml

@@ -0,0 +1,2 @@
+/target
+/Cargo.lock

ensure-no-std/src/lib.rs renamed to test-crates/ensure-no-std/src/lib.rs

@@ -0,0 +1,18 @@
+[workspace]
+resolver = "2"
+
+[package]
+edition = "2021"
+name = "minimal-versions"
+publish = false
+version = "0.0.0"
+
+[features]
+nightly = ["derive-where/nightly"]
+safe = ["derive-where/safe"]
+zeroize = ["derive-where/zeroize", "zeroize_"]
+zeroize-on-drop = ["derive-where/zeroize-on-drop", "zeroize"]
+
+[dependencies]
+derive-where = { path = "../.." }
+zeroize_ = { version = "1.5", package = "zeroize", default-features = false, optional = true }

test-crates/minimal-versions/.gitignore

@@ -0,0 +1,10 @@
+#[cfg(feature = "zeroize")]
+extern crate zeroize_ as zeroize;
+
+use core::marker::PhantomData;
+
+use derive_where::derive_where;
+
+#[derive_where(Clone, Copy, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd)]
+#[cfg_attr(feature = "zeroize", derive_where(Zeroize))]
+pub struct Test<T>(PhantomData<T>);