unit tests are good and v01cfg transforms input if players and user in players

src/device/input/button/v01_test.go

@@ -1,31 +1,51 @@
-package button_test
+package button
 
 import (
-	"fmt"
-	"mayhem-party/src/device/input/button"
 	"testing"
-	"time"
 )
 
-func TestV01(t *testing.T) {
-	src := constSrc(fmt.Sprintf(`{"T":%v,"U":"bel","Y":"abc","N":"cde"}`, time.Now().UnixNano()/int64(time.Millisecond)-50))
-	t.Logf("(%v) %s", len(src), src.Read())
-	v01 := button.NewV01(src)
-	got := v01.Read()
-	want := []button.Button{
-		{Down: true, Char: 'a'},
-		{Down: true, Char: 'b'},
-		{Down: true, Char: 'c'},
-		{Down: false, Char: 'c'},
-		{Down: false, Char: 'd'},
-		{Down: false, Char: 'e'},
+func TestV01TransformationPipe(t *testing.T) {
+	cases := map[string]struct {
+		input string
+		xform map[string]string
+		want  string
+	}{
+		"empty input": {
+			xform: map[string]string{"a": "bc"},
+		},
+		"empty xform": {
+			input: "aa",
+			want:  "aa",
+		},
+		"all": {
+			input: "aa",
+			xform: map[string]string{"a": "cc"},
+			want:  "cc",
+		},
+		"last": {
+			input: "ba",
+			xform: map[string]string{"a": "cc"},
+			want:  "bc",
+		},
+		"first": {
+			input: "ab",
+			xform: map[string]string{"a": "cc"},
+			want:  "cb",
+		},
+		"noop": {
+			input: "bb",
+			xform: map[string]string{"a": "bc"},
+			want:  "bb",
+		},
 	}
-	if len(got) != len(want) {
-		t.Fatal(len(want), len(got))
-	}
-	for i := range got {
-		if got[i] != want[i] {
-			t.Errorf("[%d] want %+v got %+v", i, want[i], got[i])
-		}
+
+	for name, d := range cases {
+		c := d
+		t.Run(name, func(t *testing.T) {
+			got := v01Transformation(c.xform).pipe(c.input)
+			if got != c.want {
+				t.Errorf("%+v(%s) want %s got %s", c.xform, c.input, c.want, got)
+			}
+		})
 	}
 }