test: Run tests in ZIG_COMMAND=zig environment

Test the new `zig dlltool` command functionality.

Update unit tests to use the new builder API.

.github/workflows/rust.yml

@@ -22,11 +22,21 @@ jobs:
     - uses: actions/checkout@v3
     - name: Install the MinGW and LLVM toolchains
       if: matrix.os == 'ubuntu-latest'
-      run: sudo apt-get install -y mingw-w64 llvm
+      run: sudo apt-get install -y gcc-mingw-w64 llvm
     - name: Build
       run: cargo build --verbose
     - name: Run tests
       run: cargo test --verbose
+  zigbuild:
+    name: Test zig dlltool
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Install LLVM binutils
+      run: sudo apt-get install -y llvm
+    - uses: goto-bus-stop/setup-zig@v1
+    - name: Run tests with zig
+      run: ZIG_COMMAND=zig cargo test --verbose
   fmt:
     name: Check code formatting
     runs-on: ubuntu-latest

src/lib.rs

@@ -421,6 +421,10 @@ mod tests {
         dir.push("x86_64-pc-windows-gnu");
         dir.push("python3-dll");
 
+        ImportLibraryGenerator::new("x86_64", "gnu")
+            .generate(&dir)
+            .unwrap();
+
         for minor in 7..=11 {
             ImportLibraryGenerator::new("x86_64", "gnu")
                 .version(Some((3, minor)))
@@ -447,7 +451,10 @@ mod tests {
         dir.push("x86_64-pc-windows-msvc");
         dir.push("python3-dll");
 
-        generate_implib_for_target(&dir, "x86_64", "msvc").unwrap();
+        ImportLibraryGenerator::new("x86_64", "msvc")
+            .generate(&dir)
+            .unwrap();
+
         for minor in 7..=11 {
             ImportLibraryGenerator::new("x86_64", "msvc")
                 .version(Some((3, minor)))