ci: add single test for wasm

It looks like we didn't have any tests for wasm. Having one tests is not
much, but it proves that the infrastructure works and it actually
verifies a fix to https://github.com/tinygo-org/tinygo/issues/4777.

We should add more packages to this list in the future.

.github/workflows/linux.yml

@@ -165,6 +165,7 @@ jobs:
           ln -s ~/lib/tinygo/bin/tinygo ~/go/bin/tinygo
       - run: make tinygo-test-wasip1-fast
       - run: make tinygo-test-wasip2-fast
+      - run: make tinygo-test-wasm
       - run: make smoketest
   assert-test-linux:
     # Run all tests that can run on Linux, with LLVM assertions enabled to catch

GNUmakefile

@@ -407,6 +407,9 @@ TEST_PACKAGES_WINDOWS := \
 	text/template/parse \
 	$(nil)
 
+TEST_PACKAGES_WASM := \
+	crypto/sha256
+
 # Report platforms on which each standard library package is known to pass tests
 jointmp := $(shell echo /tmp/join.$$$$)
 report-stdlib-tests-pass:
@@ -450,6 +453,8 @@ tinygo-bench-fast:
 	$(TINYGO) test -bench . $(TEST_PACKAGES_HOST)
 
 # Same thing, except for wasi rather than the current platform.
+tinygo-test-wasm:
+	$(TINYGO) test -target wasm $(TEST_PACKAGES_WASM)
 tinygo-test-wasi:
 	$(TINYGO) test -target wasip1 $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_SLOW) ./tests/runtime_wasi
 tinygo-test-wasip1: