ail: Split off test-miptree.cpp from test-layout.cpp

Keep test-layout.cpp for the simple smoke tests, and move the big pile
of miptree tests to its own file.

Signed-off-by: Asahi Lina <lina@asahilina.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20031>

src/asahi/layout/meson.build

@@ -39,6 +39,7 @@ if with_tests
       'asahi_layout_tests',
       files(
         'tests/test-layout.cpp',
+        'tests/test-miptree.cpp',
         'tests/test-comp-twiddled.cpp',
         'tests/test-uncomp-twiddled.cpp',
       ),

src/asahi/layout/tests/test-comp-twiddled.cpp

@@ -10,7 +10,7 @@
  * Test compressed texture sizes. All test cases in this file are extracted from
  * texture structure dumps in Metal.
  */
-struct comptest {
+struct sizetest {
    enum pipe_format format;
    uint32_t width, height, depth;
    uint8_t levels;
@@ -18,7 +18,7 @@ struct comptest {
 };
 
 /* Sort: `sort -t"," -k1,1 -k2,5n | uniq` */
-static struct comptest comptests[] = {
+static struct sizetest comptests[] = {
    { PIPE_FORMAT_R16G16B16A16_UNORM, 16, 16, 1, 1, 0x880 },
    { PIPE_FORMAT_R16G16B16A16_UNORM, 16, 24, 1, 1, 0x1080 },
    { PIPE_FORMAT_R16G16B16A16_UNORM, 16, 32, 1, 1, 0x1080 },
@@ -14313,7 +14313,7 @@ static struct comptest comptests[] = {
 TEST(CompTwiddled, SizeTests)
 {
    for (unsigned i = 0; i < ARRAY_SIZE(comptests); ++i) {
-      struct comptest test = comptests[i];
+      struct sizetest test = comptests[i];
 
       struct ail_layout layout = {
          .width_px = test.width,