1 files changed, 52 insertions, 0 deletions

diff --git a/nesting_test.go b/nesting_test.go
new file mode 100644
index 0000000..3fcc059
--- /dev/null
+++ b/nesting_test.go
@@ -0,0 +1,52 @@
+package envcfg
+
+import (
+        "os"
+        "testing"
+)
+
+type nestedStruct struct {
+        SubStruct struct {
+                Field string
+        }
+}
+
+func TestNestedMapping(t *testing.T) {
+        const ENV_KEY = "SUBSTRUCT_FIELD"
+        const ENV_VAL = "Remember: testing is the future!"
+
+        os.Clearenv()
+        os.Setenv(ENV_KEY, ENV_VAL)
+
+        s := nestedStruct{}
+
+        ReadInto(&s)
+
+        if s.SubStruct.Field != ENV_VAL {
+                t.Errorf("expected '%s', got '%s'", ENV_VAL, s.SubStruct.Field)
+        }
+}
+
+type deeplyNestedStruct struct {
+        SubStruct struct {
+                SubSubStruct struct {
+                        Field string
+                }
+        }
+}
+
+func TestDeeplyNestedMapping(t *testing.T) {
+        const ENV_KEY = "SUBSTRUCT_SUBSUBSTRUCT_FIELD"
+        const ENV_VAL = "Remember: testing is the future!"
+
+        os.Clearenv()
+        os.Setenv(ENV_KEY, ENV_VAL)
+
+        s := deeplyNestedStruct{}
+
+        ReadInto(&s)
+
+        if s.SubStruct.SubSubStruct.Field != ENV_VAL {
+                t.Errorf("expected '%s', got '%s'", ENV_VAL, s.SubStruct.SubSubStruct.Field)
+        }
+}