add test that triggers the bug(issue#65) and fails

cmd/humanlog/main_test.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestApplyConfigFromConfigFile_when_one_of_skip_or_keep_is_given(t *testing.T) {
+
+	wd, _ := os.Getwd()
+	dirs := strings.Split(wd, "/")
+	root := strings.Join(dirs[:len(dirs)-2], "/")
+	configFilePath := root + "/test/cases/00065-apply-config/config.json"
+	t.Logf("config file path: %v", configFilePath)
+
+	args := []string{"program-path"}
+	args = append(args, "--config", configFilePath)
+
+	app := newApp()
+	if err := app.Run(args); err != nil {
+		t.Fatal(err)
+	}
+}

test/cases/00065-apply-config/config.json

@@ -0,0 +1,3 @@
+{
+    "skip": ["foo", "bar"]
+}