config: add tests

These tests are basic, but they should tell us when we've broken
something.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

tests/resources/config/config0

+# This is a test                                                                                                                                                       
+; of different comments
+[core]
+    repositoryformatversion = 0
+    filemode = true
+    bare = false
+    logallrefupdates = true
\ No newline at end of file

tests/resources/config/config1

+# This one checks for case sensitivity
+[this "that"]
+	  other = true
+[this "That"]
+	  other = yes

tests/resources/config/config2

+; This one tests for multiline values
+[this "That"]
+	  and = one one one \
+two two \
+three three
\ No newline at end of file

tests/resources/config/config3

+# A [section.subsection] header is case-insensitive
+[section.SuBsection]
+		var = hello

tests/t14-config.c

+/*
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2,
+ * as published by the Free Software Foundation.
+ *
+ * In addition to the permissions in the GNU General Public License,
+ * the authors give you unlimited permission to link the compiled
+ * version of this file into combinations with other programs,
+ * and to distribute those combinations without any restriction
+ * coming from the use of this file.  (The General Public License
+ * restrictions do apply in other respects; for example, they cover
+ * modification of the file, and distribution when not linked into
+ * a combined executable.)
+ *
+ * This file 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 this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+#include "test_lib.h"
+#include "test_helpers.h"
+
+#include <git2.h>
+
+#define CONFIG_BASE TEST_RESOURCES "/config"
+
+/*
+ * This one is so we know the code isn't completely broken
+ */
+BEGIN_TEST(config0, "read a simple configuration")
+	git_config *cfg;
+	int i;
+
+	must_pass(git_config_open(&cfg, CONFIG_BASE "/config0"));
+	must_pass(git_config_get_int(cfg, "core.repositoryformatversion", &i));
+	must_be_true(i == 0);
+	must_pass(git_config_get_bool(cfg, "core.filemode", &i));
+	must_be_true(i == 1);
+	must_pass(git_config_get_bool(cfg, "core.bare", &i));
+	must_be_true(i == 0);
+	must_pass(git_config_get_bool(cfg, "core.logallrefupdates", &i));
+	must_be_true(i == 1);
+
+	git_config_free(cfg);
+END_TEST
+
+/*
+ * [this "that"] and [this "That] are different namespaces. Make sure
+ * each returns the correct one.
+ */
+BEGIN_TEST(config1, "case sensitivity")
+	git_config *cfg;
+	int i;
+	const char *str;
+
+	must_pass(git_config_open(&cfg, CONFIG_BASE "/config1"));
+
+	must_pass(git_config_get_string(cfg, "this.that.other", &str));
+	must_be_true(!strcmp(str, "true"));
+	must_pass(git_config_get_string(cfg, "this.That.other", &str));
+	must_be_true(!strcmp(str, "yes"));
+
+	must_pass(git_config_get_bool(cfg, "this.that.other", &i));
+	must_be_true(i == 1);
+	must_pass(git_config_get_bool(cfg, "this.That.other", &i));
+	must_be_true(i == 1);
+
+	/* This one doesn't exist */
+	must_fail(git_config_get_bool(cfg, "this.thaT.other", &i));
+
+	git_config_free(cfg);
+END_TEST
+
+/*
+ * If \ is the last non-space character on the line, we read the next
+ * one, separating each line with SP.
+ */
+BEGIN_TEST(config2, "parse a multiline value")
+	git_config *cfg;
+	const char *str;
+
+	must_pass(git_config_open(&cfg, CONFIG_BASE "/config2"));
+
+	must_pass(git_config_get_string(cfg, "this.That.and", &str));
+	must_be_true(!strcmp(str, "one one one two two three three"));
+
+	git_config_free(cfg);
+END_TEST
+
+/*
+ * This kind of subsection declaration is case-insensitive
+ */
+BEGIN_TEST(config3, "parse a [section.subsection] header")
+	git_config *cfg;
+	const char *str;
+
+	must_pass(git_config_open(&cfg, CONFIG_BASE "/config3"));
+
+	must_pass(git_config_get_string(cfg, "section.subsection.var", &str));
+	must_be_true(!strcmp(str, "hello"));
+
+	/* Avoid a false positive */
+	str = "nohello";
+	must_pass(git_config_get_string(cfg, "section.subSectIon.var", &str));
+	must_be_true(!strcmp(str, "hello"));
+
+	git_config_free(cfg);
+END_TEST
+
+
+BEGIN_SUITE(config)
+	 ADD_TEST(config0);
+	 ADD_TEST(config1);
+	 ADD_TEST(config2);
+	 ADD_TEST(config3);
+END_SUITE

tests/test_main.c

@@ -43,6 +43,7 @@ DECLARE_SUITE(refs);
 DECLARE_SUITE(sqlite);
 DECLARE_SUITE(repository);
 DECLARE_SUITE(threads);
+DECLARE_SUITE(config);
 
 static libgit2_suite suite_methods[]= {
 	SUITE_NAME(core),
@@ -59,6 +60,7 @@ static libgit2_suite suite_methods[]= {
 	SUITE_NAME(sqlite),
 	SUITE_NAME(repository),
 	SUITE_NAME(threads),
+	SUITE_NAME(config),
 };
 
 #define GIT_SUITE_COUNT (ARRAY_SIZE(suite_methods))