Plugin file name extension adapted to the host OS convention (.so on linux, .dll on windows, .dylib on Darwin/MacOS)

t_plugin_test.go

@@ -5,6 +5,7 @@
 package expr
 
 import (
+	"os"
 	"testing"
 )
 
@@ -36,3 +37,23 @@ func TestMakePluginName(t *testing.T) {
 		t.Errorf("makePluginName(%q) failed: Got: %q, Want: %q", name, got, want)
 	}
 }
+
+func TestLoadPluginName(t *testing.T) {
+	name := "json"
+	// want := "expr-" + name + "-plugin.so"
+	want := 1
+
+	os.Setenv("PLUGINS", "${HOME}/go/src/git.portale-stac.it/go")
+	// os.Setenv("EXPR_PLUGIN_PATH", "${PLUGINS}/expr-json-plugin:${PLUGINS}/expr-csv-plugin")
+	os.Setenv("EXPR_PLUGIN_PATH", "${PLUGINS}")
+	got, err := importPluginFromSearchPath(name)
+
+	if err != nil {
+		t.Errorf("importPluginFromSearchPath(%q) failed: %v", name, err)
+		return
+	}
+
+	if got != want {
+		t.Errorf("importPluginFromSearchPath(%q) failed: Got: %q, Want: %q", name, got, want)
+	}
+}