From 9c88472d326b2d9e01a897bf48489c17f19b1af7 Mon Sep 17 00:00:00 2001
From: Roger Standridge <9526806+archie2x@users.noreply.github.com>
Date: Tue, 10 Sep 2024 16:27:55 -0700
Subject: [PATCH] Fix #4421 add tests for 'build' and 'run' ('test' already
 changes directory) Signed-off-by: Roger Standridge
 <9526806+archie2x@users.noreply.github.com>

---
 GNUmakefile                  | 11 ++++++++++-
 tests/testing/chdir/chdir.go | 27 +++++++++++++++++++++++++++
 2 files changed, 37 insertions(+), 1 deletion(-)
 create mode 100644 tests/testing/chdir/chdir.go

diff --git a/GNUmakefile b/GNUmakefile
index 7333a6ebc9..70a7c5f589 100644
--- a/GNUmakefile
+++ b/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
diff --git a/tests/testing/chdir/chdir.go b/tests/testing/chdir/chdir.go
new file mode 100644
index 0000000000..9539738503
--- /dev/null
+++ b/tests/testing/chdir/chdir.go
@@ -0,0 +1,27 @@
+package main
+
+import (
+	"log"
+	"os"
+	"runtime"
+	"strings"
+)
+
+/*
+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 runtime.GOOS == "windows" {
+		strings.Replace(cwd, "\\", "/", -1)
+	}
+	if cwd != expectDir {
+		log.Fatal("expected:\"%v\" != os.Getwd():\"%v\"", expectDir, cwd)
+	}
+}