feat(envx): add env

envx/env.go

@@ -0,0 +1,25 @@
+package envx
+
+// Env is the environment variables.
+type Env map[string]string
+
+// Copy returns a copy of the environment.
+func (e Env) Copy() Env {
+	out := Env{}
+	for k, v := range e {
+		out[k] = v
+	}
+
+	return out
+}
+
+// Strings returns the current environment as a list of strings, suitable for
+// os executions.
+func (e Env) Strings() []string {
+	result := make([]string, 0, len(e))
+	for k, v := range e {
+		result = append(result, k+"="+v)
+	}
+
+	return result
+}

envx/env_test.go

@@ -0,0 +1,26 @@
+package envx_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/zeiss/pkg/envx"
+)
+
+func TestEnv(t *testing.T) {
+	t.Parallel()
+
+	// Create a new environment.
+	e := envx.Env{
+		"key1": "value1",
+		"key2": "value2",
+	}
+
+	e2 := e.Copy()
+	assert.Equal(t, e, e2)
+
+	strings := e.Strings()
+	assert.Len(t, strings, 2)
+	assert.Contains(t, strings, "key1=value1")
+	assert.Contains(t, strings, "key2=value2")
+}