Fix #4421 add tests for 'build' and 'run' ('test' already changes dir…

…ectory)

Signed-off-by: Roger Standridge <[email protected]>

GNUmakefile

@@ -483,8 +483,17 @@ tinygo-baremetal:
 	# regression test for #2666: e.g. encoding/hex must pass on baremetal
 	$(TINYGO) test -target cortex-m-qemu encoding/hex
 
+.PHONY: testchdir
+testchdir:
+	# test 'build' command with{,out} -C argument
+	$(TINYGO) build -C tests/testing/chdir chdir.go && rm tests/testing/chdir/chdir
+	$(TINYGO) build ./tests/testing/chdir/chdir.go && rm chdir
+	# test 'run' command with{,out} -C argument
+	EXPECT_DIR=$(PWD)/tests/testing/chdir $(TINYGO) run -C tests/testing/chdir chdir.go
+	EXPECT_DIR=$(PWD) $(TINYGO) run ./tests/testing/chdir/chdir.go
+
 .PHONY: smoketest
-smoketest:
+smoketest: testchdir
 	$(TINYGO) version
 	$(TINYGO) targets > /dev/null
 	# regression test for #2892

tests/testing/chdir/chdir.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"log"
+	"os"
+)
+
+/*
+Test that this program is 'run' in expected directory. 'run' with expected
+working-directory in 'EXPECT_DIR' environment variable' with{,out} a -C
+argument.
+*/
+func main() {
+	expectDir := os.Getenv("EXPECT_DIR")
+	cwd, err := os.Getwd()
+	if err != nil {
+		log.Fatal(err)
+	}
+	if cwd != expectDir {
+		log.Fatal("expected:\"%v\" != os.Getwd():\"%v\"", expectDir, cwd)
+	}
+}