tests: update test helpers and users

Move test-mu-common to mu-test-utils. Use mu_test_init as a wrapper for
g_test_init. Update users.

lib/utils/mu-test-utils.hh

@@ -0,0 +1,129 @@
+/*
+** Copyright (C) 2008-2022 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+**
+** This program 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.
+**
+** This program 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; if not, write to the Free Software Foundation,
+** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+**
+*/
+
+#ifndef MU_TEST_UTILS_HH__
+#define MU_TEST_UTILS_HH__
+
+#include <string>
+
+namespace Mu {
+
+/**
+ * get a dir name for a random temporary directory to do tests
+ *
+ * @return a random dir name, g_free when it's no longer needed
+ */
+char* test_mu_common_get_random_tmpdir();
+
+/**
+ * mu wrapper for g_test_init
+ *
+ * @param argc
+ * @param argv
+ */
+void mu_test_init(int *argc, char ***argv);
+
+/**
+ * set the timezone
+ *
+ * @param tz timezone
+ *
+ * @return the old timezone
+ */
+const char* set_tz(const char* tz);
+
+/**
+ * switch the locale to en_US.utf8, return TRUE if it succeeds
+ *
+ * @return true if the switch succeeds, false otherwise
+ */
+bool set_en_us_utf8_locale();
+
+/**
+ * For unit tests, assert two std::string's are equal.
+ *
+ * @param s1 string1
+ * @param s2 string2
+ */
+#define assert_equal(s1__,s2__) do {					\
+		std::string s1s__(s1__), s2s__(s2__);			\
+		g_assert_cmpstr(s1s__.c_str(), ==, s2s__.c_str());	\
+	} while(0)
+
+
+#define assert_equal_seq(seq1__, seq2__) do {				\
+		g_assert_cmpuint(seq1__.size(), ==, seq2__.size());	\
+		size_t n__{};						\
+		for (auto&& item__: seq1__) {				\
+			g_assert_true(item__ == seq2__.at(n__));	\
+			++n__;						\
+		}							\
+		} while(0)
+
+#define assert_equal_seq_str(seq1__, seq2__) do {			\
+		g_assert_cmpuint(seq1__.size(), ==, seq2__.size());	\
+		size_t n__{};						\
+		for (auto&& item__: seq1__) {				\
+			assert_equal(item__, seq2__.at(n__));		\
+			++n__;						\
+		}							\
+		} while(0)
+
+/**
+ * For unit-tests, allow warnings in the current function.
+ *
+ */
+void allow_warnings();
+
+
+/**
+ * For unit-tests, a RAII tempdir.
+ *
+ */
+struct TempDir {
+	/**
+	 * Construct a temporary directory
+	 */
+	TempDir(bool autodelete=true);
+
+	/**
+	 * DTOR; removes the temporary directory
+	 *
+	 *
+	 * @return
+	 */
+	~TempDir();
+
+	/**
+	 * Path to the temporary directory
+	 *
+	 * @return the path.
+	 *
+	 *
+	 */
+	const std::string& path() {return path_; }
+private:
+	std::string path_;
+	const bool autodelete_;
+};
+
+} // namepace Mu
+
+
+#endif /* MU_TEST_UTILS_HH__ */