Fix mdBook tests on Windows (rust-lang/rust#99466)

.github/workflows/ci.yml

@@ -263,9 +263,7 @@ jobs:
         os:
           - ubuntu
           - macOS
-          # TODO: Re-enable once rust-lang/rust#99466 is fixed:
+          - windows
-          #       https://github.com/rust-lang/rust/issues/99466
-          #- windows
         toolchain:
           - stable
           - beta
@@ -277,8 +275,7 @@ jobs:
         with:
           toolchain: ${{ matrix.toolchain }}
       - run: rustup default ${{ matrix.toolchain }}
-
+      - uses: peaceiris/actions-mdbook@v1
-      - run: cargo install mdbook
 
       - run: make test.book
 

Makefile

@@ -93,8 +93,13 @@ test.book:
 ifeq ($(clean),yes)
 	cargo clean
 endif
+	$(eval target := $(strip $(shell cargo -vV | sed -n 's/host: //p')))
 	cargo build
-	mdbook test book -L target/debug/deps
+	mdbook test book -L target/debug/deps $(strip \
+		$(if $(call eq,$(findstring windows,$(target)),),,\
+			$(shell cargo metadata -q \
+			        | jq -r '.packages[] | select(.name == "windows_$(word 1,$(subst -, ,$(target)))_$(word 4,$(subst -, ,$(target)))") | .manifest_path' \
+			        | sed -e "s/^/-L '/" -e 's/Cargo.toml/lib/' -e "s/$$/'/" )))
 
 
 # Run Rust tests of project crates.

book/README.md

@@ -45,10 +45,11 @@ The output will be in the `_rendered/` directory.
 
 ### Testing
 
-To run the tests validating all code examples in the book, run:
+To run the tests validating all code examples in the book, run (from project root dir):
 ```bash
-mdbook test -L ../target/debug/deps
+cargo build
+mdbook test -L target/debug/deps
 
-# or via shortcut from project root dir:
+# or via shortcut:
 make test.book
 ```