add test for go installation

bb/testoperenv/test_languages.clj

@@ -30,3 +30,11 @@
                          "gradle" "run")
          "Hello from Kotlin!"))
     ))
+
+(deftest test-go
+  (testing "go tooling is installed"
+    (is (str/includes?
+         (run-cmd-in-dir "go"
+                         "go" "run" "main.go")
+         "Hello from Go!"))
+    ))

go/go.mod

@@ -0,0 +1,3 @@
+module example.com/smoketest/v2
+
+go 1.20

go/main.go

@@ -0,0 +1,10 @@
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func main()  {
+	fmt.Fprintln(os.Stdout, "Hello from Go!")
+}