deprecation: move deprecated tests into their own file

Move the deprecated stream tests into their own compilation unit.  This
will allow us to disable any preprocessor directives that apply to
deprecation just for these tests (eg, disabling `GIT_DEPRECATED_HARD`).

tests/stream/deprecated.c

+#include "clar_libgit2.h"
+#include "git2/sys/stream.h"
+#include "streams/tls.h"
+#include "streams/socket.h"
+#include "stream.h"
+
+static git_stream test_stream;
+static int ctor_called;
+
+void test_stream_deprecated__cleanup(void)
+{
+	cl_git_pass(git_stream_register(GIT_STREAM_TLS | GIT_STREAM_STANDARD, NULL));
+}
+
+static int test_stream_init(git_stream **out, const char *host, const char *port)
+{
+	GIT_UNUSED(host);
+	GIT_UNUSED(port);
+
+	ctor_called = 1;
+	*out = &test_stream;
+
+	return 0;
+}
+
+void test_stream_deprecated__register_tls(void)
+{
+	git_stream *stream;
+	int error;
+
+	ctor_called = 0;
+	cl_git_pass(git_stream_register_tls(test_stream_init));
+	cl_git_pass(git_tls_stream_new(&stream, "localhost", "443"));
+	cl_assert_equal_i(1, ctor_called);
+	cl_assert_equal_p(&test_stream, stream);
+
+	ctor_called = 0;
+	stream = NULL;
+	cl_git_pass(git_stream_register_tls(NULL));
+	error = git_tls_stream_new(&stream, "localhost", "443");
+
+	/*
+	 * We don't have TLS support enabled, or we're on Windows,
+	 * which has no arbitrary TLS stream support.
+	 */
+#if defined(GIT_WIN32) || !defined(GIT_HTTPS)
+	cl_git_fail_with(-1, error);
+#else
+	cl_git_pass(error);
+#endif
+
+	cl_assert_equal_i(0, ctor_called);
+	cl_assert(&test_stream != stream);
+
+	git_stream_free(stream);
+}

tests/core/stream.c → tests/stream/registration.c

@@ -7,7 +7,7 @@
 static git_stream test_stream;
 static int ctor_called;
 
-void test_core_stream__cleanup(void)
+void test_stream_registration__cleanup(void)
 {
 	cl_git_pass(git_stream_register(GIT_STREAM_TLS | GIT_STREAM_STANDARD, NULL));
 }
@@ -34,7 +34,7 @@ static int test_stream_wrap(git_stream **out, git_stream *in, const char *host)
 	return 0;
 }
 
-void test_core_stream__register_insecure(void)
+void test_stream_registration__insecure(void)
 {
 	git_stream *stream;
 	git_stream_registration registration = {0};
@@ -60,7 +60,7 @@ void test_core_stream__register_insecure(void)
 	git_stream_free(stream);
 }
 
-void test_core_stream__register_tls(void)
+void test_stream_registration__tls(void)
 {
 	git_stream *stream;
 	git_stream_registration registration = {0};
@@ -96,7 +96,7 @@ void test_core_stream__register_tls(void)
 	git_stream_free(stream);
 }
 
-void test_core_stream__register_both(void)
+void test_stream_registration__both(void)
 {
 	git_stream *stream;
 	git_stream_registration registration = {0};
@@ -117,35 +117,3 @@ void test_core_stream__register_both(void)
 	cl_assert_equal_i(1, ctor_called);
 	cl_assert_equal_p(&test_stream, stream);
 }
-
-void test_core_stream__register_tls_deprecated(void)
-{
-	git_stream *stream;
-	int error;
-
-	ctor_called = 0;
-	cl_git_pass(git_stream_register_tls(test_stream_init));
-	cl_git_pass(git_tls_stream_new(&stream, "localhost", "443"));
-	cl_assert_equal_i(1, ctor_called);
-	cl_assert_equal_p(&test_stream, stream);
-
-	ctor_called = 0;
-	stream = NULL;
-	cl_git_pass(git_stream_register_tls(NULL));
-	error = git_tls_stream_new(&stream, "localhost", "443");
-
-	/*
-	 * We don't have TLS support enabled, or we're on Windows,
-	 * which has no arbitrary TLS stream support.
-	 */
-#if defined(GIT_WIN32) || !defined(GIT_HTTPS)
-	cl_git_fail_with(-1, error);
-#else
-	cl_git_pass(error);
-#endif
-
-	cl_assert_equal_i(0, ctor_called);
-	cl_assert(&test_stream != stream);
-
-	git_stream_free(stream);
-}