Other: Safer user types

internal/safe/map_test.go

@@ -0,0 +1,97 @@
+package safe
+
+import "testing"
+
+func TestSafe_Map(t *testing.T) {
+	m := NewMap(func(a, b string, data map[string]string) bool {
+		return a < b
+	})
+
+	m.Set("a", "b")
+
+	if !m.Has("a") {
+		t.Fatal("expected to have key")
+	}
+
+	if m.Has("b") {
+		t.Fatal("expected not to have key")
+	}
+
+	m.Set("b", "c")
+
+	if !m.Has("b") {
+		t.Fatal("expected to have key")
+	}
+
+	if !m.HasFunc(func(key string, val string) bool {
+		return key == "b"
+	}) {
+		t.Fatal("expected to have key")
+	}
+
+	if !m.Get("b", func(val string) {
+		if val != "c" {
+			t.Fatal("expected to have value")
+		}
+	}) {
+		t.Fatal("expected to have key")
+	}
+
+	if !m.Index(0, func(key string, val string) {
+		if key != "a" || val != "b" {
+			t.Fatal("expected to have key and value")
+		}
+	}) {
+		t.Fatal("expected to have index")
+	}
+
+	if !m.Index(1, func(key string, val string) {
+		if key != "b" || val != "c" {
+			t.Fatal("expected to have key and value")
+		}
+	}) {
+		t.Fatal("expected to have index")
+	}
+
+	if m.Index(2, func(key string, val string) {
+		t.Fatal("expected not to have index")
+	}) {
+		t.Fatal("expected not to have index")
+	}
+
+	if !m.GetDelete("b", func(val string) {
+		if val != "c" {
+			t.Fatal("expected to have value")
+		}
+	}) {
+		t.Fatal("expected to have key")
+	}
+
+	if m.Has("b") {
+		t.Fatal("expected not to have key")
+	}
+
+	if m.GetDelete("b", func(val string) {
+		t.Fatal("expected not to have value")
+	}) {
+		t.Fatal("expected not to have key")
+	}
+
+	if !m.Index(0, func(key string, val string) {
+		if key != "a" || val != "b" {
+			t.Fatal("expected to have key and value")
+		}
+	}) {
+		t.Fatal("expected to have index")
+	}
+
+	m.Values(func(val []string) {
+		if len(val) != 1 {
+			t.Fatal("expected to have values")
+		}
+
+		if val[0] != "b" {
+			t.Fatal("expected to have value")
+		}
+	})
+}