Move string set operations to strmangle

- Delete MakeDBName (unused)
- Rename HasElement to SetInclude

strmangle/sets_test.go

@@ -0,0 +1,170 @@
+package strmangle
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestSetInclude(t *testing.T) {
+	t.Parallel()
+
+	elements := []string{"one", "two"}
+	if got := SetInclude("one", elements); !got {
+		t.Error("should have found element key")
+	}
+	if got := SetInclude("three", elements); got {
+		t.Error("should not have found element key")
+	}
+}
+
+func TestSetComplement(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		A []string
+		B []string
+		C []string
+	}{
+		{
+			[]string{"thing1", "thing2", "thing3"},
+			[]string{"thing2", "otherthing", "stuff"},
+			[]string{"thing1", "thing3"},
+		},
+		{
+			[]string{},
+			[]string{"thing1", "thing2"},
+			[]string{},
+		},
+		{
+			[]string{"thing1", "thing2"},
+			[]string{},
+			[]string{"thing1", "thing2"},
+		},
+		{
+			[]string{"thing1", "thing2"},
+			[]string{"thing1", "thing2"},
+			[]string{},
+		},
+	}
+
+	for i, test := range tests {
+		c := SetComplement(test.A, test.B)
+		if !reflect.DeepEqual(test.C, c) {
+			t.Errorf("[%d] mismatch:\nWant: %#v\nGot:  %#v", i, test.C, c)
+		}
+	}
+}
+
+func TestSetIntersect(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		A []string
+		B []string
+		C []string
+	}{
+		{
+			[]string{"thing1", "thing2", "thing3"},
+			[]string{"thing2", "otherthing", "stuff"},
+			[]string{"thing2"},
+		},
+		{
+			[]string{},
+			[]string{"thing1", "thing2"},
+			[]string{},
+		},
+		{
+			[]string{"thing1", "thing2"},
+			[]string{},
+			[]string{},
+		},
+		{
+			[]string{"thing1", "thing2"},
+			[]string{"thing1", "thing2"},
+			[]string{"thing1", "thing2"},
+		},
+	}
+
+	for i, test := range tests {
+		c := SetIntersect(test.A, test.B)
+		if !reflect.DeepEqual(test.C, c) {
+			t.Errorf("[%d] mismatch:\nWant: %#v\nGot:  %#v", i, test.C, c)
+		}
+	}
+}
+
+func TestSetMerge(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		A []string
+		B []string
+		C []string
+	}{
+		{
+			[]string{"thing1", "thing2", "thing3"},
+			[]string{"thing1", "thing3", "thing4"},
+			[]string{"thing1", "thing2", "thing3", "thing4"},
+		},
+		{
+			[]string{},
+			[]string{"thing1", "thing2"},
+			[]string{"thing1", "thing2"},
+		},
+		{
+			[]string{"thing1", "thing2"},
+			[]string{},
+			[]string{"thing1", "thing2"},
+		},
+		{
+			[]string{"thing1", "thing2", "thing3"},
+			[]string{"thing1", "thing2", "thing3"},
+			[]string{"thing1", "thing2", "thing3"},
+		},
+		{
+			[]string{"thing1", "thing2"},
+			[]string{"thing3", "thing4"},
+			[]string{"thing1", "thing2", "thing3", "thing4"},
+		},
+	}
+
+	for i, test := range tests {
+		m := SetMerge(test.A, test.B)
+		if !reflect.DeepEqual(test.C, m) {
+			t.Errorf("[%d] mismatch:\nWant: %#v\nGot: %#v", i, test.C, m)
+		}
+	}
+}
+
+func TestSortByKeys(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		Keys []string
+		Strs []string
+		Ret  []string
+	}{
+		{
+			[]string{"id", "name", "thing", "stuff"},
+			[]string{"thing", "stuff", "name", "id"},
+			[]string{"id", "name", "thing", "stuff"},
+		},
+		{
+			[]string{"id", "name", "thing", "stuff"},
+			[]string{"id", "name", "thing", "stuff"},
+			[]string{"id", "name", "thing", "stuff"},
+		},
+		{
+			[]string{"id", "name", "thing", "stuff"},
+			[]string{"stuff", "thing"},
+			[]string{"thing", "stuff"},
+		},
+	}
+
+	for i, test := range tests {
+		z := SortByKeys(test.Keys, test.Strs)
+		if !reflect.DeepEqual(test.Ret, z) {
+			t.Errorf("[%d] mismatch:\nWant: %#v\nGot:  %#v", i, test.Ret, z)
+		}
+	}
+}