Resolve pipeline settings and collection selections

internal/cli/process_inputs_test.go

@@ -76,3 +76,33 @@ func TestPrepareProcessInitializesReportsAndToleratesDebugLoss(t *testing.T) {
 		t.Fatalf("output published early: %v", err)
 	}
 }
+
+func TestCollectionFlagJSON(t *testing.T) {
+	for _, tc := range []struct {
+		raw   string
+		valid bool
+		null  bool
+		size  int
+	}{
+		{`["party","spells"]`, true, false, 2}, {`[]`, true, false, 0}, {`null`, true, true, 0},
+		{`"party"`, false, false, 0}, {`[1]`, false, false, 0}, {`["x"] true`, false, false, 0},
+	} {
+		result, err := parseCollectionNames(tc.raw)
+		if (err == nil) != tc.valid {
+			t.Fatalf("%s error=%v", tc.raw, err)
+		}
+		if !tc.valid {
+			continue
+		}
+		if tc.null {
+			if result != nil {
+				t.Fatalf("null=%v", result)
+			}
+			continue
+		}
+		list, ok := result.([]any)
+		if !ok || len(list) != tc.size {
+			t.Fatalf("%s result=%v", tc.raw, result)
+		}
+	}
+}