Refactor codec test

pkg/deesee/codec_test.go

@@ -4,32 +4,25 @@ import "testing"
 
 // TestEncrypt tests the Encrypt and Decrypt function.
 func TestCryptDecrypt(t *testing.T) {
-
-	// Case is a struct to store test cases.
-	type Case struct {
-		name string
-		key  int
-		A    string
-		B    string
-	}
-
 	// Run the test cases.
-	for _, tt := range []Case{
-		{"Test encrypt-decrypt: simple text",
-			5, "clark", "hqfwp"},
-		{"Test encrypt-decrypt: text with shifted  outbounds chars",
-			3, "cherry blossom", "fkhuub eorvvrp"},
-		{"Test encrypt-decrypt: text with shifted  outbounds chars and non-letter chars",
-			3, "cherry123 blossom!", "fkhuub123 eorvvrp!"},
+	for _, tc := range []struct {
+		name, A, B string
+		key        int
+	}{
+		{"Test encrypt-decrypt: Simple text",
+			"clark", "hqfwp", 5},
+		{"Test encrypt-decrypt: Text with shifted outbounds chars",
+			"cherry blossom", "fkhuub eorvvrp", 3},
+		{"Test encrypt-decrypt: Text with shifted outbounds chars and non-letter chars",
+			"cherry123 blossom!", "fkhuub123 eorvvrp!", 3},
 	} {
-		t.Run(tt.name, func(t *testing.T) {
-			enc := Encrypt(tt.A, tt.key)
-			if enc != tt.B {
-				t.Errorf("Encrypt() = %v, want %v", enc, tt.B)
+		t.Run(tc.name, func(t *testing.T) {
+			if enc := Encrypt(tc.A, tc.key); enc != tc.B {
+				t.Errorf("Encrypt() = %v, want %v", enc, tc.B)
 			}
-			dec := Decrypt(enc, tt.key)
-			if dec != tt.A {
-				t.Errorf("Decrypt() = %v, want %v", dec, tt.A)
+
+			if dec := Decrypt(tc.B, tc.key); dec != tc.A {
+				t.Errorf("Decrypt() = %v, want %v", dec, tc.A)
 			}
 		})
 	}