tests.h and tlscontext.js.h docs.

src/tests.h

@@ -6,12 +6,21 @@
 ** @{
 */
 
+/**
+** Options to control how tests are run.
+*/
 typedef struct _tf_test_options_t
 {
+	/** The path to the Tilde Friends executable, in order to run subprocesses. */
 	const char* exe_path;
+	/** A comma-separated list of tests to run, or NULL. */
 	const char* tests;
 } tf_test_options_t;
 
+/**
+** Run tests.
+** @param options Test options.
+*/
 void tf_tests(const tf_test_options_t* options);
 
 /** @} */