[vala/0.36] tests: Add more string method tests

[Rico Tzschichholz <ricotz src gnome org>]

commit 33a7ed858e50c00b52243c12db786b32bfc523ef
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Tue Oct 30 09:54:56 2018 +0100

    tests: Add more string method tests

 tests/basic-types/strings.vala | 77 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
---
diff --git a/tests/basic-types/strings.vala b/tests/basic-types/strings.vala
index bb27a61e9..a4fcda4f7 100644
--- a/tests/basic-types/strings.vala
+++ b/tests/basic-types/strings.vala
@@ -35,6 +35,83 @@ void test_string () {
        assert (t[1] == 'l');
 }
 
+void test_string_joinv () {
+       string[] sa = { "hello", "my", "world" };
+
+       string s = string.joinv (" ", sa);
+       assert (s == "hello my world");
+
+       sa.length = -1;
+       s = string.joinv (":", sa);
+       assert (s == "hello:my:world");
+
+       s = string.joinv ("-", null);
+       assert (s == "");
+}
+
+void test_string_replace () {
+       string s = "hellomyworld";
+
+       s = s.replace ("my", "whole");
+       assert (s == "hellowholeworld");
+}
+
+void test_string_slice () {
+       string s = "hellomyworld";
+
+       string r = s.slice (5, 7);
+       assert (r == "my");
+
+       r = s.slice (-7, 7);
+       assert (r == "my");
+
+       r = s.slice (5, -5);
+       assert (r == "my");
+
+       r = s.slice (-7, -5);
+       assert (r == "my");
+}
+
+void test_string_splice () {
+       string s = "hellomyworld";
+
+       s = s.splice (5, 7);
+       assert (s == "helloworld");
+
+       s = s.splice (5, 5, "whole");
+       assert (s == "hellowholeworld");
+
+       s = s.splice (10, -5, "wide");
+       assert (s == "hellowholewideworld");
+
+       s = s.splice (-14, 5);
+       assert (s == "hellowholewideworld");
+
+       s = s.splice (-14, -5);
+       assert (s == "helloworld");
+}
+
+void test_string_substring () {
+       string s = "hellomyworld";
+
+       string r = s.substring (5, 2);
+       assert (r == "my");
+
+       r = s.substring (-7, 2);
+       assert (r == "my");
+
+       r = s.substring (5);
+       assert (r == "myworld");
+
+       r = s.substring (-7);
+       assert (r == "myworld");
+}
+
 void main () {
        test_string ();
+       test_string_joinv ();
+       test_string_replace ();
+       test_string_slice ();
+       test_string_splice ();
+       test_string_substring ();
 }