First Commit

ext/libpqxx-7.7.3/test/test11.cxx

@@ -0,0 +1,76 @@
+#include <cstdio>
+#include <cstring>
+#include <iostream>
+
+#include <pqxx/transaction>
+
+#include "test_helpers.hxx"
+
+using namespace pqxx;
+
+
+// Test program for libpqxx.  Query a table and report its metadata.
+namespace
+{
+void test_011()
+{
+  connection conn;
+  work tx{conn};
+  std::string const Table{"pg_tables"};
+
+  result R(tx.exec("SELECT * FROM " + Table));
+
+  // Print column names
+  for (pqxx::row::size_type c{0}; c < R.columns(); ++c)
+  {
+    std::string N{R.column_name(c)};
+    PQXX_CHECK_EQUAL(R.column_number(N), c, "Inconsistent column numbers.");
+  }
+
+  // If there are rows in R, compare their metadata to R's.
+  if (not std::empty(R))
+  {
+    PQXX_CHECK_EQUAL(R[0].rownumber(), 0, "Row 0 has wrong number.");
+
+    if (std::size(R) >= 2)
+      PQXX_CHECK_EQUAL(R[1].rownumber(), 1, "Row 1 has wrong number.");
+
+    // Test result::iterator::swap()
+    pqxx::result::const_iterator const T1(R[0]), T2(R[1]);
+    PQXX_CHECK_NOT_EQUAL(T1, T2, "Values are identical--can't test swap().");
+    pqxx::result::const_iterator T1s(T1), T2s(T2);
+    PQXX_CHECK_EQUAL(T1s, T1, "Result iterator copy-construction is wrong.");
+    PQXX_CHECK_EQUAL(
+      T2s, T2, "Result iterator copy-construction is inconsistently wrong.");
+    T1s.swap(T2s);
+    PQXX_CHECK_NOT_EQUAL(T1s, T1, "Result iterator swap doesn't work.");
+    PQXX_CHECK_NOT_EQUAL(
+      T2s, T2, "Result iterator swap inconsistently wrong.");
+    PQXX_CHECK_EQUAL(T2s, T1, "Result iterator swap is asymmetric.");
+    PQXX_CHECK_EQUAL(
+      T1s, T2, "Result iterator swap is inconsistently asymmetric.");
+
+    for (pqxx::row::size_type c{0}; c < std::size(R[0]); ++c)
+    {
+      std::string N{R.column_name(c)};
+
+      PQXX_CHECK_EQUAL(
+        std::string{R[0].at(c).c_str()}, R[0].at(N).c_str(),
+        "Field by name != field by number.");
+
+      PQXX_CHECK_EQUAL(
+        std::string{R[0][c].c_str()}, R[0][N].c_str(),
+        "at() is inconsistent with operator[].");
+
+      PQXX_CHECK_EQUAL(R[0][c].name(), N, "Field names are inconsistent.");
+
+      PQXX_CHECK_EQUAL(
+        std::size(R[0][c]), strlen(R[0][c].c_str()),
+        "Field size is not what we expected.");
+    }
+  }
+}
+
+
+PQXX_REGISTER_TEST(test_011);
+} // namespace