Added TestMapGet

templatefunc_test.go

@@ -244,3 +244,80 @@ func TestParseFormTag(t *testing.T) {
 		t.Errorf("Form Tag that should be ignored was not correctly parsed.")
 	}
 }
+
+func TestMapGet(t *testing.T) {
+	// test one level map
+	m1 := map[string]int64{
+		"a": 1,
+		"1": 2,
+	}
+
+	if res, err := MapGet(m1, "a"); err == nil {
+		if res.(int64) != 1 {
+			t.Errorf("Should return 1, but return %v", res)
+		}
+	} else {
+		t.Errorf("Error happens %v", err)
+	}
+
+	if res, err := MapGet(m1, "1"); err == nil {
+		if res.(int64) != 2 {
+			t.Errorf("Should return 2, but return %v", res)
+		}
+	} else {
+		t.Errorf("Error happens %v", err)
+	}
+
+	if res, err := MapGet(m1, 1); err == nil {
+		if res.(int64) != 2 {
+			t.Errorf("Should return 2, but return %v", res)
+		}
+	} else {
+		t.Errorf("Error happens %v", err)
+	}
+
+	// test 2 level map
+	m2 := map[string]interface{}{
+		"1": map[string]float64{
+			"2": 3.5,
+		},
+	}
+
+	if res, err := MapGet(m2, 1, 2); err == nil {
+		if res.(float64) != 3.5 {
+			t.Errorf("Should return 3.5, but return %v", res)
+		}
+	} else {
+		t.Errorf("Error happens %v", err)
+	}
+
+	// test 5 level map
+	m5 := map[string]interface{}{
+		"1": map[string]interface{}{
+			"2": map[string]interface{}{
+				"3": map[string]interface{}{
+					"4": map[string]interface{}{
+						"5": 1.2,
+					},
+				},
+			},
+		},
+	}
+
+	if res, err := MapGet(m5, 1, 2, 3, 4, 5); err == nil {
+		if res.(float64) != 1.2 {
+			t.Errorf("Should return 1.2, but return %v", res)
+		}
+	} else {
+		t.Errorf("Error happens %v", err)
+	}
+
+	// check whether element not exists in map
+	if res, err := MapGet(m5, 5, 4, 3, 2, 1); err == nil {
+		if res != nil {
+			t.Errorf("Should return nil, but return %v", res)
+		}
+	} else {
+		t.Errorf("Error happens %v", err)
+	}
+}