1 files changed, 100 insertions, 0 deletions
diff --git a/lib/helpers_test.go b/lib/helpers_test.go
new file mode 100644
index 00000000..2ea80692
--- /dev/null
+++ b/lib/helpers_test.go
@@ -0,0 +1,100 @@
+package lib
+
+import (
+	"bytes"
+	"io"
+	"os"
+	"testing"
+)
+
+type mockInputConverter struct {
+	typ      string
+	action   Action
+	desc     string
+	err      error
+	inputFn  func(Container) (Container, error)
+}
+
+func (m mockInputConverter) GetType() string {
+	return m.typ
+}
+
+func (m mockInputConverter) GetAction() Action {
+	return m.action
+}
+
+func (m mockInputConverter) GetDescription() string {
+	if m.desc != "" {
+		return m.desc
+	}
+	return "mock input converter"
+}
+
+func (m mockInputConverter) Input(c Container) (Container, error) {
+	if m.inputFn != nil {
+		return m.inputFn(c)
+	}
+	return c, m.err
+}
+
+type mockOutputConverter struct {
+	typ     string
+	action  Action
+	desc    string
+	err     error
+	outFn   func(Container) error
+}
+
+func (m mockOutputConverter) GetType() string {
+	return m.typ
+}
+
+func (m mockOutputConverter) GetAction() Action {
+	return m.action
+}
+
+func (m mockOutputConverter) GetDescription() string {
+	if m.desc != "" {
+		return m.desc
+	}
+	return "mock output converter"
+}
+
+func (m mockOutputConverter) Output(c Container) error {
+	if m.outFn != nil {
+		return m.outFn(c)
+	}
+	return m.err
+}
+
+func captureOutput(t *testing.T, fn func()) string {
+	t.Helper()
+
+	stdout := os.Stdout
+	r, w, _ := os.Pipe()
+	os.Stdout = w
+
+	fn()
+
+	_ = w.Close()
+	os.Stdout = stdout
+
+	var buf bytes.Buffer
+	_, _ = io.Copy(&buf, r)
+	_ = r.Close()
+
+	return buf.String()
+}
+
+func resetInputConverters() {
+	inputConverterMap = make(map[string]InputConverter)
+}
+
+func resetOutputConverters() {
+	outputConverterMap = make(map[string]OutputConverter)
+}
+
+func resetConfigCreators() {
+	inputConfigCreatorCache = make(map[string]inputConfigCreator)
+	outputConfigCreatorCache = make(map[string]outputConfigCreator)
+}