[mutter] cogl: Move out bitmask unit test to separate file

[Marge Bot <marge-bot src gnome org>]

commit d0861c8ae29277ba39057a8586d0d8c1fc9b4d0d
Author: Jonas Ådahl <jadahl gmail com>
Date:   Thu Aug 4 23:26:50 2022 +0200

    cogl: Move out bitmask unit test to separate file
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2555>

 cogl/cogl/cogl-bitmask.c           | 170 ----------------------------------
 cogl/cogl/cogl-bitmask.h           |  18 ++--
 src/tests/cogl/unit/meson.build    |   1 +
 src/tests/cogl/unit/test-bitmask.c | 181 +++++++++++++++++++++++++++++++++++++
 4 files changed, 191 insertions(+), 179 deletions(-)
---
diff --git a/cogl/cogl/cogl-bitmask.c b/cogl/cogl/cogl-bitmask.c
index 754c66fa82..0c40ccf073 100644
--- a/cogl/cogl/cogl-bitmask.c
+++ b/cogl/cogl/cogl-bitmask.c
@@ -36,8 +36,6 @@
 #include <glib.h>
 #include <string.h>
 
-#include <test-fixtures/test-unit.h>
-
 #include "cogl-bitmask.h"
 #include "cogl-util.h"
 #include "cogl-flags.h"
@@ -319,171 +317,3 @@ _cogl_bitmask_popcount_upto_in_array (const CoglBitmask *bitmask,
       return pop + _cogl_util_popcountl (top_mask & ((1UL << bit_index) - 1));
     }
 }
-
-typedef struct
-{
-  int n_bits;
-  int *bits;
-} CheckData;
-
-static gboolean
-check_bit (int bit_num, void *user_data)
-{
-  CheckData *data = user_data;
-  int i;
-
-  for (i = 0; i < data->n_bits; i++)
-    if (data->bits[i] == bit_num)
-      {
-        data->bits[i] = -1;
-        return TRUE;
-      }
-
-  g_assert_not_reached ();
-
-  return TRUE;
-}
-
-static void
-verify_bits (const CoglBitmask *bitmask,
-             ...)
-{
-  CheckData data;
-  va_list ap, ap_copy;
-  int i;
-
-  va_start (ap, bitmask);
-  G_VA_COPY (ap_copy, ap);
-
-  for (data.n_bits = 0; va_arg (ap, int) != -1; data.n_bits++);
-
-  data.bits = alloca (data.n_bits * (sizeof (int)));
-
-  G_VA_COPY (ap, ap_copy);
-
-  for (i = 0; i < data.n_bits; i++)
-    data.bits[i] = va_arg (ap, int);
-
-  _cogl_bitmask_foreach (bitmask, check_bit, &data);
-
-  for (i = 0; i < data.n_bits; i++)
-    g_assert_cmpint (data.bits[i], ==, -1);
-
-  g_assert_cmpint (_cogl_bitmask_popcount (bitmask), ==, data.n_bits);
-
-  for (i = 0; i < 1024; i++)
-    {
-      int upto_popcount = 0;
-      int j;
-
-      G_VA_COPY (ap, ap_copy);
-
-      for (j = 0; j < data.n_bits; j++)
-        if (va_arg (ap, int) < i)
-          upto_popcount++;
-
-      g_assert_cmpint (_cogl_bitmask_popcount_upto (bitmask, i),
-                       ==,
-                       upto_popcount);
-
-      G_VA_COPY (ap, ap_copy);
-
-      for (j = 0; j < data.n_bits; j++)
-        if (va_arg (ap, int) == i)
-          break;
-
-      g_assert_cmpint (_cogl_bitmask_get (bitmask, i), ==, (j < data.n_bits));
-    }
-}
-
-UNIT_TEST (check_bitmask_api,
-           0 /* no requirements */,
-           0 /* no failure cases */)
-{
-  CoglBitmask bitmask;
-  CoglBitmask other_bitmask;
-  /* A dummy bit to make it use arrays sometimes */
-  int dummy_bit;
-  int i;
-
-  for (dummy_bit = -1; dummy_bit < 256; dummy_bit += 40)
-    {
-      _cogl_bitmask_init (&bitmask);
-      _cogl_bitmask_init (&other_bitmask);
-
-      if (dummy_bit != -1)
-        _cogl_bitmask_set (&bitmask, dummy_bit, TRUE);
-
-      verify_bits (&bitmask, dummy_bit, -1);
-
-      _cogl_bitmask_set (&bitmask, 1, TRUE);
-      _cogl_bitmask_set (&bitmask, 4, TRUE);
-      _cogl_bitmask_set (&bitmask, 5, TRUE);
-
-      verify_bits (&bitmask, 1, 4, 5, dummy_bit, -1);
-
-      _cogl_bitmask_set (&bitmask, 4, FALSE);
-
-      verify_bits (&bitmask, 1, 5, dummy_bit, -1);
-
-      _cogl_bitmask_clear_all (&bitmask);
-
-      verify_bits (&bitmask, -1);
-
-      if (dummy_bit != -1)
-        _cogl_bitmask_set (&bitmask, dummy_bit, TRUE);
-
-      verify_bits (&bitmask, dummy_bit, -1);
-
-      _cogl_bitmask_set (&bitmask, 1, TRUE);
-      _cogl_bitmask_set (&bitmask, 4, TRUE);
-      _cogl_bitmask_set (&bitmask, 5, TRUE);
-      _cogl_bitmask_set (&other_bitmask, 5, TRUE);
-      _cogl_bitmask_set (&other_bitmask, 6, TRUE);
-
-      _cogl_bitmask_set_bits (&bitmask, &other_bitmask);
-
-      verify_bits (&bitmask, 1, 4, 5, 6, dummy_bit, -1);
-      verify_bits (&other_bitmask, 5, 6, -1);
-
-      _cogl_bitmask_set (&bitmask, 6, FALSE);
-
-      verify_bits (&bitmask, 1, 4, 5, dummy_bit, -1);
-
-      _cogl_bitmask_xor_bits (&bitmask, &other_bitmask);
-
-      verify_bits (&bitmask, 1, 4, 6, dummy_bit, -1);
-      verify_bits (&other_bitmask, 5, 6, -1);
-
-      _cogl_bitmask_set_range (&bitmask, 5, TRUE);
-
-      verify_bits (&bitmask, 0, 1, 2, 3, 4, 6, dummy_bit, -1);
-
-      _cogl_bitmask_set_range (&bitmask, 4, FALSE);
-
-      verify_bits (&bitmask, 4, 6, dummy_bit, -1);
-
-      _cogl_bitmask_destroy (&other_bitmask);
-      _cogl_bitmask_destroy (&bitmask);
-    }
-
-  /* Extra tests for really long bitmasks */
-  _cogl_bitmask_init (&bitmask);
-  _cogl_bitmask_set_range (&bitmask, 400, TRUE);
-  _cogl_bitmask_init (&other_bitmask);
-  _cogl_bitmask_set (&other_bitmask, 5, TRUE);
-  _cogl_bitmask_xor_bits (&bitmask, &other_bitmask);
-
-  for (i = 0; i < 1024; i++)
-    g_assert_cmpint (_cogl_bitmask_get (&bitmask, i),
-                     ==,
-                     (i == 5 ? FALSE :
-                      i < 400 ? TRUE :
-                      FALSE));
-
-  _cogl_bitmask_set_range (&other_bitmask, 500, TRUE);
-  _cogl_bitmask_set_bits (&bitmask, &other_bitmask);
-
-  for (i = 0; i < 1024; i++)
-    g_assert_cmpint (_cogl_bitmask_get (&bitmask, i), ==, (i < 500));
-}
diff --git a/cogl/cogl/cogl-bitmask.h b/cogl/cogl/cogl-bitmask.h
index 7d73db0db2..31a57152c5 100644
--- a/cogl/cogl/cogl-bitmask.h
+++ b/cogl/cogl/cogl-bitmask.h
@@ -90,31 +90,31 @@ typedef struct _CoglBitmaskImaginaryType *CoglBitmask;
 #define _cogl_bitmask_init(bitmask) \
   G_STMT_START { *(bitmask) = _cogl_bitmask_from_bits (0); } G_STMT_END
 
-gboolean
+COGL_EXPORT_TEST gboolean
 _cogl_bitmask_get_from_array (const CoglBitmask *bitmask,
                               unsigned int bit_num);
 
-void
+COGL_EXPORT_TEST void
 _cogl_bitmask_set_in_array (CoglBitmask *bitmask,
                             unsigned int bit_num,
                             gboolean value);
 
-void
+COGL_EXPORT_TEST void
 _cogl_bitmask_set_range_in_array (CoglBitmask *bitmask,
                                   unsigned int n_bits,
                                   gboolean value);
 
-void
+COGL_EXPORT_TEST void
 _cogl_bitmask_clear_all_in_array (CoglBitmask *bitmask);
 
 void
 _cogl_bitmask_set_flags_array (const CoglBitmask *bitmask,
                                unsigned long *flags);
 
-int
+COGL_EXPORT_TEST int
 _cogl_bitmask_popcount_in_array (const CoglBitmask *bitmask);
 
-int
+COGL_EXPORT_TEST int
 _cogl_bitmask_popcount_upto_in_array (const CoglBitmask *bitmask,
                                       int upto);
 
@@ -126,7 +126,7 @@ _cogl_bitmask_popcount_upto_in_array (const CoglBitmask *bitmask,
  * This makes sure that all of the bits that are set in @src are also
  * set in @dst. Any unset bits in @src are left alone in @dst.
  */
-void
+COGL_EXPORT_TEST void
 _cogl_bitmask_set_bits (CoglBitmask *dst,
                         const CoglBitmask *src);
 
@@ -138,7 +138,7 @@ _cogl_bitmask_set_bits (CoglBitmask *dst,
  * For every bit that is set in src, the corresponding bit in dst is
  * inverted.
  */
-void
+COGL_EXPORT_TEST void
 _cogl_bitmask_xor_bits (CoglBitmask *dst,
                         const CoglBitmask *src);
 
@@ -153,7 +153,7 @@ typedef gboolean (* CoglBitmaskForeachFunc) (int bit_num, void *user_data);
  *
  * This calls @func for each bit that is set in @bitmask.
  */
-void
+COGL_EXPORT_TEST void
 _cogl_bitmask_foreach (const CoglBitmask *bitmask,
                        CoglBitmaskForeachFunc func,
                        void *user_data);
diff --git a/src/tests/cogl/unit/meson.build b/src/tests/cogl/unit/meson.build
index c4c4f33598..021a5d16ec 100644
--- a/src/tests/cogl/unit/meson.build
+++ b/src/tests/cogl/unit/meson.build
@@ -1,4 +1,5 @@
 cogl_unit_tests = [
+  'test-bitmask',
 ]
 
 test_env = environment()
diff --git a/src/tests/cogl/unit/test-bitmask.c b/src/tests/cogl/unit/test-bitmask.c
new file mode 100644
index 0000000000..368d2deb47
--- /dev/null
+++ b/src/tests/cogl/unit/test-bitmask.c
@@ -0,0 +1,181 @@
+#include "cogl-config.h"
+
+#include "cogl/cogl-bitmask.h"
+#include "tests/cogl-test-utils.h"
+
+typedef struct
+{
+  int n_bits;
+  int *bits;
+} CheckData;
+
+static gboolean
+check_bit (int bit_num, void *user_data)
+{
+  CheckData *data = user_data;
+  int i;
+
+  for (i = 0; i < data->n_bits; i++)
+    {
+      if (data->bits[i] == bit_num)
+        {
+          data->bits[i] = -1;
+          return TRUE;
+        }
+    }
+
+  g_assert_not_reached ();
+
+  return TRUE;
+}
+
+static void
+verify_bits (const CoglBitmask *bitmask,
+             ...)
+{
+  CheckData data;
+  va_list ap, ap_copy;
+  int i;
+
+  va_start (ap, bitmask);
+  G_VA_COPY (ap_copy, ap);
+
+  for (data.n_bits = 0; va_arg (ap, int) != -1; data.n_bits++);
+
+  data.bits = alloca (data.n_bits * (sizeof (int)));
+
+  G_VA_COPY (ap, ap_copy);
+
+  for (i = 0; i < data.n_bits; i++)
+    data.bits[i] = va_arg (ap, int);
+
+  _cogl_bitmask_foreach (bitmask, check_bit, &data);
+
+  for (i = 0; i < data.n_bits; i++)
+    g_assert_cmpint (data.bits[i], ==, -1);
+
+  g_assert_cmpint (_cogl_bitmask_popcount (bitmask), ==, data.n_bits);
+
+  for (i = 0; i < 1024; i++)
+    {
+      int upto_popcount = 0;
+      int j;
+
+      G_VA_COPY (ap, ap_copy);
+
+      for (j = 0; j < data.n_bits; j++)
+        if (va_arg (ap, int) < i)
+          upto_popcount++;
+
+      g_assert_cmpint (_cogl_bitmask_popcount_upto (bitmask, i),
+                       ==,
+                       upto_popcount);
+
+      G_VA_COPY (ap, ap_copy);
+
+      for (j = 0; j < data.n_bits; j++)
+        {
+          if (va_arg (ap, int) == i)
+            break;
+        }
+
+      g_assert_cmpint (_cogl_bitmask_get (bitmask, i), ==, (j < data.n_bits));
+    }
+}
+
+static void
+check_bitmask_api (void)
+{
+  CoglBitmask bitmask;
+  CoglBitmask other_bitmask;
+  /* A dummy bit to make it use arrays sometimes */
+  int dummy_bit;
+  int i;
+
+  for (dummy_bit = -1; dummy_bit < 256; dummy_bit += 40)
+    {
+      _cogl_bitmask_init (&bitmask);
+      _cogl_bitmask_init (&other_bitmask);
+
+      if (dummy_bit != -1)
+        _cogl_bitmask_set (&bitmask, dummy_bit, TRUE);
+
+      verify_bits (&bitmask, dummy_bit, -1);
+
+      _cogl_bitmask_set (&bitmask, 1, TRUE);
+      _cogl_bitmask_set (&bitmask, 4, TRUE);
+      _cogl_bitmask_set (&bitmask, 5, TRUE);
+
+      verify_bits (&bitmask, 1, 4, 5, dummy_bit, -1);
+
+      _cogl_bitmask_set (&bitmask, 4, FALSE);
+
+      verify_bits (&bitmask, 1, 5, dummy_bit, -1);
+
+      _cogl_bitmask_clear_all (&bitmask);
+
+      verify_bits (&bitmask, -1);
+
+      if (dummy_bit != -1)
+        _cogl_bitmask_set (&bitmask, dummy_bit, TRUE);
+
+      verify_bits (&bitmask, dummy_bit, -1);
+
+      _cogl_bitmask_set (&bitmask, 1, TRUE);
+      _cogl_bitmask_set (&bitmask, 4, TRUE);
+      _cogl_bitmask_set (&bitmask, 5, TRUE);
+      _cogl_bitmask_set (&other_bitmask, 5, TRUE);
+      _cogl_bitmask_set (&other_bitmask, 6, TRUE);
+
+      _cogl_bitmask_set_bits (&bitmask, &other_bitmask);
+
+      verify_bits (&bitmask, 1, 4, 5, 6, dummy_bit, -1);
+      verify_bits (&other_bitmask, 5, 6, -1);
+
+      _cogl_bitmask_set (&bitmask, 6, FALSE);
+
+      verify_bits (&bitmask, 1, 4, 5, dummy_bit, -1);
+
+      _cogl_bitmask_xor_bits (&bitmask, &other_bitmask);
+
+      verify_bits (&bitmask, 1, 4, 6, dummy_bit, -1);
+      verify_bits (&other_bitmask, 5, 6, -1);
+
+      _cogl_bitmask_set_range (&bitmask, 5, TRUE);
+
+      verify_bits (&bitmask, 0, 1, 2, 3, 4, 6, dummy_bit, -1);
+
+      _cogl_bitmask_set_range (&bitmask, 4, FALSE);
+
+      verify_bits (&bitmask, 4, 6, dummy_bit, -1);
+
+      _cogl_bitmask_destroy (&other_bitmask);
+      _cogl_bitmask_destroy (&bitmask);
+    }
+
+  /* Extra tests for really long bitmasks */
+  _cogl_bitmask_init (&bitmask);
+  _cogl_bitmask_set_range (&bitmask, 400, TRUE);
+  _cogl_bitmask_init (&other_bitmask);
+  _cogl_bitmask_set (&other_bitmask, 5, TRUE);
+  _cogl_bitmask_xor_bits (&bitmask, &other_bitmask);
+
+  for (i = 0; i < 1024; i++)
+    {
+      g_assert_cmpint (_cogl_bitmask_get (&bitmask, i),
+                       ==,
+                       (i == 5 ? FALSE :
+                        i < 400 ? TRUE :
+                        FALSE));
+    }
+
+  _cogl_bitmask_set_range (&other_bitmask, 500, TRUE);
+  _cogl_bitmask_set_bits (&bitmask, &other_bitmask);
+
+  for (i = 0; i < 1024; i++)
+    g_assert_cmpint (_cogl_bitmask_get (&bitmask, i), ==, (i < 500));
+}
+
+COGL_TEST_SUITE_MINIMAL (
+  g_test_add_func ("/bitmask/api", check_bitmask_api);
+)