3 files changed, 163 insertions, 1 deletions
diff --git a/src/util/Makefile.am b/src/util/Makefile.am
index c37afff7520..b57da3cd948 100644
--- a/src/util/Makefile.am
+++ b/src/util/Makefile.am
@@ -19,7 +19,10 @@
 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 # IN THE SOFTWARE.
 
-SUBDIRS = xmlpool . tests/hash_table
+SUBDIRS = . \
+	xmlpool \
+	tests/hash_table \
+	tests/string_buffer
 
 include Makefile.sources
 
diff --git a/src/util/tests/string_buffer/Makefile.am b/src/util/tests/string_buffer/Makefile.am
new file mode 100644
index 00000000000..bd04d86349e
--- /dev/null
+++ b/src/util/tests/string_buffer/Makefile.am
@@ -0,0 +1,40 @@
+# Copyright © 2017 Thomas Helland
+#
+#  Permission is hereby granted, free of charge, to any person obtaining a
+#  copy of this software and associated documentation files (the "Software"),
+#  to deal in the Software without restriction, including without limitation
+#  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+#  and/or sell copies of the Software, and to permit persons to whom the
+#  Software is furnished to do so, subject to the following conditions:
+#
+#  The above copyright notice and this permission notice (including the next
+#  paragraph) shall be included in all copies or substantial portions of the
+#  Software.
+#
+#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+#  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+#  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+#  IN THE SOFTWARE.
+
+AM_CPPFLAGS = \
+	-I$(top_srcdir)/src \
+	-I$(top_srcdir)/include \
+	-I$(top_srcdir)/src/gtest/include \
+	$(PTHREAD_CFLAGS) \
+	$(DEFINES)
+
+TESTS = string_buffer_test
+
+check_PROGRAMS = $(TESTS)
+
+string_buffer_test_SOURCES = \
+	string_buffer_test.cpp
+
+string_buffer_test_LDADD = \
+	$(top_builddir)/src/gtest/libgtest.la \
+	$(top_builddir)/src/util/libmesautil.la \
+	$(PTHREAD_LIBS) \
+	$(DLOPEN_LIBS)
diff --git a/src/util/tests/string_buffer/string_buffer_test.cpp b/src/util/tests/string_buffer/string_buffer_test.cpp
new file mode 100644
index 00000000000..c3d43cb67b5
--- /dev/null
+++ b/src/util/tests/string_buffer/string_buffer_test.cpp
@@ -0,0 +1,119 @@
+/*
+ * Copyright © 2017 Thomas Helland
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <gtest/gtest.h>
+#include "util/string_buffer.h"
+
+/**
+ * \file string_buffer_test.cpp
+ *
+ * Test the string buffer implementation
+ */
+
+#define INITIAL_BUF_SIZE 6
+class string_buffer : public ::testing::Test {
+public:
+
+   struct _mesa_string_buffer *buf;
+   const char *str1 = "test1";
+   const char *str2 = "test2";
+   const char *str3 = "test1test2";
+   char str4[80];
+   char str5[40];
+
+   virtual void SetUp();
+   virtual void TearDown();
+};
+
+void
+string_buffer::SetUp()
+{
+   buf = _mesa_string_buffer_create(NULL, INITIAL_BUF_SIZE);
+}
+
+void
+string_buffer::TearDown()
+{
+   /* Finally, clean up after us */
+   _mesa_string_buffer_destroy(buf);
+}
+
+static uint32_t
+space_left_in_buffer(_mesa_string_buffer *buf)
+{
+   return buf->capacity - buf->length - 1;
+}
+
+TEST_F(string_buffer, string_buffer_tests)
+{
+   /* The string terminator needs one byte, so there should one "missing" */
+   EXPECT_TRUE(space_left_in_buffer(buf) == INITIAL_BUF_SIZE - 1);
+
+   /* Start by appending str1 */
+   EXPECT_TRUE(_mesa_string_buffer_append(buf, str1));
+   EXPECT_TRUE(space_left_in_buffer(buf) ==
+               INITIAL_BUF_SIZE - strlen(str1) - 1);
+   EXPECT_TRUE(strcmp(buf->buf, str1) == 0);
+
+   /* Add more, so that the string is resized */
+   EXPECT_TRUE(_mesa_string_buffer_append(buf, str2));
+
+   /* The string should now be equal to str3 */
+   EXPECT_TRUE(strcmp(buf->buf, str3) == 0);
+
+   /* Check that the length of the string is reset when clearing */
+   _mesa_string_buffer_clear(buf);
+   EXPECT_TRUE(buf->length == 0);
+   EXPECT_TRUE(strlen(buf->buf) == 0);
+
+   /* Test a string with some formatting */
+   sprintf(str4, "Testing formatting %d, %f", 100, 1.0);
+   EXPECT_TRUE(_mesa_string_buffer_printf(buf, "Testing formatting %d, %f", 100, 1.0));
+   EXPECT_TRUE(strcmp(buf->buf, str4) == 0);
+
+   /* Compile a string with some other formatting */
+   sprintf(str5, "Testing formatting %d, %x", 100, 0xDEADBEAF);
+
+   /* Concatenate str5 to str4 */
+   strcat(str4, str5);
+
+   /* Now use the formatted append function again */
+   EXPECT_TRUE(_mesa_string_buffer_printf(buf, "Testing formatting %d, %x", 100, 0xDEADBEAF));
+
+   /* The string buffer should now be equal to str4 */
+   EXPECT_TRUE(strcmp(buf->buf, str4) == 0);
+
+   _mesa_string_buffer_clear(buf);
+
+   /* Test appending by one char at a time */
+   EXPECT_TRUE(_mesa_string_buffer_append_char(buf, 'a'));
+   EXPECT_TRUE(buf->length == 1);
+   EXPECT_TRUE(strcmp(buf->buf, "a") == 0);
+   EXPECT_TRUE(_mesa_string_buffer_append_char(buf, 'a'));
+   EXPECT_TRUE(strcmp(buf->buf, "aa") == 0);
+}