rename side to kind

internal/kind_test.go

@@ -0,0 +1,60 @@
+package internal
+
+import "testing"
+
+func TestSide_String(t *testing.T) {
+	tests := []struct {
+		name string
+		side Kind
+		want string
+	}{
+		{"buy", KindBuy, "buy"},
+		{"sell", KindSell, "sell"},
+		{"unknown", KindUnknown, "unknown"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := tt.side.String(); got != tt.want {
+				t.Errorf("want Side.String() to be %v but got %v", tt.want, got)
+			}
+		})
+	}
+}
+
+func TestSide_IsBuy(t *testing.T) {
+	tests := []struct {
+		name string
+		side Kind
+		want bool
+	}{
+		{"buy", KindBuy, true},
+		{"sell", KindSell, false},
+		{"unknown", KindUnknown, false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := tt.side.Is(KindBuy); got != tt.want {
+				t.Errorf("want Side.IsBuy() to be %v but got %v", tt.want, got)
+			}
+		})
+	}
+}
+
+func TestSide_IsSell(t *testing.T) {
+	tests := []struct {
+		name string
+		side Kind
+		want bool
+	}{
+		{"buy", KindBuy, false},
+		{"sell", KindSell, true},
+		{"unknown", KindUnknown, false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := tt.side.Is(KindSell); got != tt.want {
+				t.Errorf("want Side.IsSell() to be %v but got %v", tt.want, got)
+			}
+		})
+	}
+}