[PATCH 09/15] Add hash-map-tests.c

[David Malcolm <dmalcolm@redhat.com>]

Jeff approved an earlier version of this (as
unittests/test-hash-map.c):
 https://gcc.gnu.org/ml/gcc-patches/2015-10/msg03301.html
> OK if/when prereqs are approved. Minor twiddling if we end up
> moving it elsewhere or standardizing/reducing header files is
> pre-approved.

This version moves the tests to gcc/hash-map-tests.c.

gcc/ChangeLog:
	* hash-map-tests.c: New file.
---
 gcc/hash-map-tests.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 gcc/hash-map-tests.c

diff --git a/gcc/hash-map-tests.c b/gcc/hash-map-tests.c
new file mode 100644
index 0000000..8fc989a
--- /dev/null
+++ b/gcc/hash-map-tests.c
@@ -0,0 +1,81 @@
+/* Unit tests for hash-map.h.
+   Copyright (C) 2015 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "opts.h"
+#include "signop.h"
+#include "hash-set.h"
+#include "fixed-value.h"
+#include "alias.h"
+#include "flags.h"
+#include "symtab.h"
+#include "tree-core.h"
+#include "stor-layout.h"
+#include "tree.h"
+#include "stringpool.h"
+#include "selftest.h"
+
+#if CHECKING_P
+
+namespace {
+
+TEST (hash_map_test, map_of_strings_to_int)
+{
+  hash_map <const char *, int> m;
+
+  const char *ostrich = "ostrich";
+  const char *elephant = "elephant";
+  const char *ant = "ant";
+  const char *spider = "spider";
+  const char *millipede = "Illacme plenipes";
+  const char *eric = "half a bee";
+
+  /* A fresh hash_map should be empty.  */
+  EXPECT_EQ (0, m.elements ());
+  EXPECT_EQ (NULL, m.get (ostrich));
+
+  /* Populate the hash_map.  */
+  EXPECT_EQ (false, m.put (ostrich, 2));
+  EXPECT_EQ (false, m.put (elephant, 4));
+  EXPECT_EQ (false, m.put (ant, 6));
+  EXPECT_EQ (false, m.put (spider, 8));
+  EXPECT_EQ (false, m.put (millipede, 750));
+  EXPECT_EQ (false, m.put (eric, 3));
+
+  /* Verify that we can recover the stored values.  */
+  EXPECT_EQ (6, m.elements ());
+  EXPECT_EQ (2, *m.get (ostrich));
+  EXPECT_EQ (4, *m.get (elephant));
+  EXPECT_EQ (6, *m.get (ant));
+  EXPECT_EQ (8, *m.get (spider));
+  EXPECT_EQ (750, *m.get (millipede));
+  EXPECT_EQ (3, *m.get (eric));
+
+  /* Verify removing an item.  */
+  m.remove (eric);
+  EXPECT_EQ (5, m.elements ());
+  EXPECT_EQ (NULL, m.get (eric));
+}
+
+}  /* anon namespace.  */
+
+#endif /* CHECKING_P */
-- 
1.8.5.3