1 files changed, 102 insertions, 0 deletions
diff --git a/sets_test.go b/sets_test.go
new file mode 100644
index 0000000..d2e7f32
--- /dev/null
+++ b/sets_test.go
@@ -0,0 +1,102 @@
+package immutable
+
+import (
+	"testing"
+)
+
+func TestSetsPut(t *testing.T) {
+	s := NewSet[string](nil)
+	s2 := s.Set("1").Set("1")
+	if s.Len() != 0 {
+		t.Fatalf("Unexpected mutation of set")
+	}
+	if s.Has("1") {
+		t.Fatalf("Unexpected set element")
+	}
+	if s2.Len() != 1 {
+		t.Fatalf("Unexpected non-mutation of set")
+	}
+	if !s2.Has("1") {
+		t.Fatalf("Set element missing")
+	}
+	itr := s2.Iterator()
+	counter := 0
+	for !itr.Done() {
+		i, v := itr.Next()
+		t.Log(i, v)
+		counter++
+	}
+	if counter != 1 {
+		t.Fatalf("iterator wrong length")
+	}
+}
+
+func TestSetsDelete(t *testing.T) {
+	s := NewSet[string](nil)
+	s2 := s.Set("1")
+	s3 := s.Delete("1")
+	if s2.Len() != 1 {
+		t.Fatalf("Unexpected non-mutation of set")
+	}
+	if !s2.Has("1") {
+		t.Fatalf("Set element missing")
+	}
+	if s3.Len() != 0 {
+		t.Fatalf("Unexpected set length after delete")
+	}
+	if s3.Has("1") {
+		t.Fatalf("Unexpected set element after delete")
+	}
+}
+
+func TestSortedSetsPut(t *testing.T) {
+	s := NewSortedSet[string](nil)
+	s2 := s.Put("1").Put("1").Put("0")
+	if s.Len() != 0 {
+		t.Fatalf("Unexpected mutation of set")
+	}
+	if s.Has("1") {
+		t.Fatalf("Unexpected set element")
+	}
+	if s2.Len() != 2 {
+		t.Fatalf("Unexpected non-mutation of set")
+	}
+	if !s2.Has("1") {
+		t.Fatalf("Set element missing")
+	}
+
+	itr := s2.Iterator()
+	counter := 0
+	for !itr.Done() {
+		i, v := itr.Next()
+		t.Log(i, v)
+		if counter == 0 && i != "0" {
+			t.Fatalf("sort did not work for first el")
+		}
+		if counter == 1 && i != "1" {
+			t.Fatalf("sort did not work for second el")
+		}
+		counter++
+	}
+	if counter != 2 {
+		t.Fatalf("iterator wrong length")
+	}
+}
+
+func TestSortedSetsDelete(t *testing.T) {
+	s := NewSortedSet[string](nil)
+	s2 := s.Put("1")
+	s3 := s.Delete("1")
+	if s2.Len() != 1 {
+		t.Fatalf("Unexpected non-mutation of set")
+	}
+	if !s2.Has("1") {
+		t.Fatalf("Set element missing")
+	}
+	if s3.Len() != 0 {
+		t.Fatalf("Unexpected set length after delete")
+	}
+	if s3.Has("1") {
+		t.Fatalf("Unexpected set element after delete")
+	}
+}