add test for issue nr.58

Signed-off-by: Inteon <42113979+inteon@users.noreply.github.com>

yaml_test.go

@@ -495,6 +495,30 @@ func TestUnmarshal(t *testing.T) {
 			},
 		},
 
+		// BUG: type info gets lost (#58)
+		"decode embeded struct and cast integer to string": {
+			encoded:    []byte("a: 11\nb: testB"),
+			decodeInto: new(UnmarshalEmbedStruct),
+			decoded: UnmarshalEmbedStruct{
+				UnmarshalStruct: UnmarshalStruct{
+					A: "11",
+				},
+				B: "testB",
+			},
+			err: fatalErrorsType,
+		},
+		"decode embeded structpointer and cast integer to string": {
+			encoded:    []byte("a: 11\nb: testB"),
+			decodeInto: new(UnmarshalEmbedStructPointer),
+			decoded: UnmarshalEmbedStructPointer{
+				UnmarshalStruct: &UnmarshalStruct{
+					A: "11",
+				},
+				B: "testB",
+			},
+			err: fatalErrorsType,
+		},
+
 		// decoding into incompatible type
 		"decode into stringmap with incompatible type": {
 			encoded:    []byte("a:\n  a:\n    a: 3"),