adding cs142 code

cs142/smcquay/lab06/test-add.cc

@@ -0,0 +1,43 @@
+#include <iostream>
+#include <string>
+
+using namespace std;
+
+#include "sm_array.h"
+#include "collect.h"
+#include "test_constants.h"
+
+
+int main(int argc, char * argv[]) {
+    garray a;
+
+    bool raised_error = false;
+    bool correct_error_string = false;
+    try {
+        a.add("");
+    }
+    catch (string e) {
+        raised_error = true;
+        if(e == "cannot add empty string") {
+            correct_error_string = true;
+        }
+    }
+
+    if(not raised_error) {
+        cerr << "should have raised an error trying to add an empty string" << endl;
+        return 1;
+    }
+
+    if(not correct_error_string) {
+        cerr << "incorrect error string" << endl;
+        return 1;
+    }
+
+    garray g = initial_restaurants();
+    if(g.add("Cafe Rio") or g.add("Jimmy Johns") or not g.add("Jimbo White")) {
+        cerr << "shouldn't be able to add something that's already in there" << endl;
+        return 1;
+    }
+
+    return 0;
+}