v0.2.0 toml-only, harden concurrency and env export, dep updates

ownership_test.go

@@ -0,0 +1,34 @@
+package config
+
+import "testing"
+
+func TestOptionsAreOwned(t *testing.T) {
+	opts := DefaultLoadOptions()
+	opts.EnvWhitelist = map[string]bool{"value": true}
+	c := NewWithOptions(opts)
+	opts.Sources[0] = SourceFile
+	opts.EnvWhitelist["value"] = false
+	if c.GetPrecedence()[0] != SourceCLI || !c.options.EnvWhitelist["value"] {
+		t.Fatal("options retained caller-owned containers")
+	}
+	c.SetLoadOptions(LoadOptions{})
+	if err := c.Register("value", 0); err != nil {
+		t.Fatal(err)
+	}
+	if err := c.Set("value", 1); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestExportEnvContainerValues(t *testing.T) {
+	c := New()
+	if err := c.Register("items", []string{"old"}); err != nil {
+		t.Fatal(err)
+	}
+	if err := c.Set("items", []string{"new"}); err != nil {
+		t.Fatal(err)
+	}
+	if got := c.ExportEnv("APP_")["APP_ITEMS"]; got == "" {
+		t.Fatal("changed slice was not exported")
+	}
+}