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458e3b7a84
Use the new g_type_interface_instantiable_prerequisite() to check compatibility for transform functions. In particular, this allows interfaces (in my case GDK_TYPE_PAINTABLE) to be transformed to/from any GObject type (in my case G_TYPE_OBJECT) using the transform function registered to transform between any 2 objects (g_value_object_transform_value() does a type check and uses NULL if the types don't match). And this in turn allows be to g_object_bind_property() a gobject-typed generic property (GtkListItem::item) to a GtkImage::paintable. Tests for the new functionality are included.
369 lines
12 KiB
C
369 lines
12 KiB
C
#define GLIB_VERSION_MIN_REQUIRED GLIB_VERSION_2_30
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#include <glib-object.h>
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static void
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test_value_basic (void)
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{
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GValue value = G_VALUE_INIT;
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g_assert_false (G_IS_VALUE (&value));
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g_assert_false (G_VALUE_HOLDS_INT (&value));
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g_value_unset (&value);
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g_assert_false (G_IS_VALUE (&value));
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g_assert_false (G_VALUE_HOLDS_INT (&value));
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g_value_init (&value, G_TYPE_INT);
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g_assert_true (G_IS_VALUE (&value));
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g_assert_true (G_VALUE_HOLDS_INT (&value));
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g_assert_false (G_VALUE_HOLDS_UINT (&value));
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g_assert_cmpint (g_value_get_int (&value), ==, 0);
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g_value_set_int (&value, 10);
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g_assert_cmpint (g_value_get_int (&value), ==, 10);
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g_value_reset (&value);
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g_assert_true (G_IS_VALUE (&value));
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g_assert_true (G_VALUE_HOLDS_INT (&value));
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g_assert_cmpint (g_value_get_int (&value), ==, 0);
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g_value_unset (&value);
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g_assert_false (G_IS_VALUE (&value));
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g_assert_false (G_VALUE_HOLDS_INT (&value));
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}
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static void
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test_value_string (void)
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{
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const gchar *static1 = "static1";
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const gchar *static2 = "static2";
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const gchar *storedstr;
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const gchar *copystr;
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gchar *str1, *str2;
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GValue value = G_VALUE_INIT;
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GValue copy = G_VALUE_INIT;
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g_test_summary ("Test that G_TYPE_STRING GValue copy properly");
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/*
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* Regular strings (ownership not passed)
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*/
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/* Create a regular string gvalue and make sure it copies the provided string */
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g_value_init (&value, G_TYPE_STRING);
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g_assert_true (G_VALUE_HOLDS_STRING (&value));
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/* The string contents should be empty at this point */
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storedstr = g_value_get_string (&value);
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g_assert_true (storedstr == NULL);
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g_value_set_string (&value, static1);
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/* The contents should be a copy of the same string */
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storedstr = g_value_get_string (&value);
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g_assert_true (storedstr != static1);
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g_assert_cmpstr (storedstr, ==, static1);
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/* Check g_value_dup_string() provides a copy */
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str1 = g_value_dup_string (&value);
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g_assert_true (storedstr != str1);
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g_assert_cmpstr (str1, ==, static1);
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g_free (str1);
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/* Copying a regular string gvalue should copy the contents */
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g_value_init (©, G_TYPE_STRING);
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g_value_copy (&value, ©);
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copystr = g_value_get_string (©);
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g_assert_true (copystr != storedstr);
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g_assert_cmpstr (copystr, ==, static1);
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g_value_unset (©);
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/* Setting a new string should change the contents */
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g_value_set_string (&value, static2);
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/* The contents should be a copy of that *new* string */
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storedstr = g_value_get_string (&value);
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g_assert_true (storedstr != static2);
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g_assert_cmpstr (storedstr, ==, static2);
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/* Setting a static string over that should also change it (test for
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* coverage and valgrind) */
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g_value_set_static_string (&value, static1);
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storedstr = g_value_get_string (&value);
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g_assert_true (storedstr != static2);
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g_assert_cmpstr (storedstr, ==, static1);
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/* Giving a string directly (ownership passed) should replace the content */
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str2 = g_strdup (static2);
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g_value_take_string (&value, str2);
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storedstr = g_value_get_string (&value);
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g_assert_true (storedstr != static2);
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g_assert_cmpstr (storedstr, ==, str2);
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g_value_unset (&value);
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/*
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* Regular strings (ownership passed)
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*/
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g_value_init (&value, G_TYPE_STRING);
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g_assert_true (G_VALUE_HOLDS_STRING (&value));
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str1 = g_strdup (static1);
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g_value_take_string (&value, str1);
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/* The contents should be the string we provided */
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storedstr = g_value_get_string (&value);
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g_assert_true (storedstr == str1);
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/* But g_value_dup_string() should provide a copy */
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str2 = g_value_dup_string (&value);
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g_assert_true (storedstr != str2);
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g_assert_cmpstr (str2, ==, static1);
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g_free (str2);
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/* Copying a regular string gvalue (even with ownership passed) should copy
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* the contents */
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g_value_init (©, G_TYPE_STRING);
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g_value_copy (&value, ©);
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copystr = g_value_get_string (©);
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g_assert_true (copystr != storedstr);
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g_assert_cmpstr (copystr, ==, static1);
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g_value_unset (©);
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/* Setting a new regular string should change the contents */
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g_value_set_string (&value, static2);
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/* The contents should be a copy of that *new* string */
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storedstr = g_value_get_string (&value);
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g_assert_true (storedstr != static2);
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g_assert_cmpstr (storedstr, ==, static2);
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g_value_unset (&value);
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/*
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* Static strings
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*/
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g_value_init (&value, G_TYPE_STRING);
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g_assert_true (G_VALUE_HOLDS_STRING (&value));
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g_value_set_static_string (&value, static1);
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/* The contents should be the string we provided */
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storedstr = g_value_get_string (&value);
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g_assert_true (storedstr == static1);
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/* But g_value_dup_string() should provide a copy */
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str2 = g_value_dup_string (&value);
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g_assert_true (storedstr != str2);
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g_assert_cmpstr (str2, ==, static1);
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g_free (str2);
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/* Copying a static string gvalue should *actually* copy the contents */
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g_value_init (©, G_TYPE_STRING);
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g_value_copy (&value, ©);
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copystr = g_value_get_string (©);
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g_assert_true (copystr != static1);
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g_value_unset (©);
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/* Setting a new string should change the contents */
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g_value_set_static_string (&value, static2);
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/* The contents should be a copy of that *new* string */
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storedstr = g_value_get_string (&value);
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g_assert_true (storedstr != static1);
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g_assert_cmpstr (storedstr, ==, static2);
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g_value_unset (&value);
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/*
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* Interned/Canonical strings
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*/
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static1 = g_intern_static_string (static1);
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g_value_init (&value, G_TYPE_STRING);
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g_assert_true (G_VALUE_HOLDS_STRING (&value));
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g_value_set_interned_string (&value, static1);
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g_assert_true (G_VALUE_IS_INTERNED_STRING (&value));
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/* The contents should be the string we provided */
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storedstr = g_value_get_string (&value);
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g_assert_true (storedstr == static1);
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/* But g_value_dup_string() should provide a copy */
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str2 = g_value_dup_string (&value);
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g_assert_true (storedstr != str2);
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g_assert_cmpstr (str2, ==, static1);
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g_free (str2);
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/* Copying an interned string gvalue should *not* copy the contents
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* and should still be an interned string */
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g_value_init (©, G_TYPE_STRING);
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g_value_copy (&value, ©);
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g_assert_true (G_VALUE_IS_INTERNED_STRING (©));
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copystr = g_value_get_string (©);
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g_assert_true (copystr == static1);
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g_value_unset (©);
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/* Setting a new interned string should change the contents */
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static2 = g_intern_static_string (static2);
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g_value_set_interned_string (&value, static2);
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g_assert_true (G_VALUE_IS_INTERNED_STRING (&value));
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/* The contents should be the interned string */
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storedstr = g_value_get_string (&value);
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g_assert_cmpstr (storedstr, ==, static2);
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/* Setting a new regular string should change the contents */
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g_value_set_string (&value, static2);
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g_assert_false (G_VALUE_IS_INTERNED_STRING (&value));
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/* The contents should be a copy of that *new* string */
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storedstr = g_value_get_string (&value);
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g_assert_true (storedstr != static2);
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g_assert_cmpstr (storedstr, ==, static2);
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g_value_unset (&value);
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}
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static gint
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cmpint (gconstpointer a, gconstpointer b)
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{
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const GValue *aa = a;
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const GValue *bb = b;
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return g_value_get_int (aa) - g_value_get_int (bb);
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}
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static void
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test_valuearray_basic (void)
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{
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GValueArray *a;
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GValueArray *a2;
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GValue v = G_VALUE_INIT;
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GValue *p;
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gint i;
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a = g_value_array_new (20);
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g_value_init (&v, G_TYPE_INT);
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for (i = 0; i < 100; i++)
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{
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g_value_set_int (&v, i);
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g_value_array_append (a, &v);
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}
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g_assert_cmpint (a->n_values, ==, 100);
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p = g_value_array_get_nth (a, 5);
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g_assert_cmpint (g_value_get_int (p), ==, 5);
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for (i = 20; i < 100; i+= 5)
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g_value_array_remove (a, 100 - i);
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for (i = 100; i < 150; i++)
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{
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g_value_set_int (&v, i);
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g_value_array_prepend (a, &v);
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}
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g_value_array_sort (a, cmpint);
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for (i = 0; i < a->n_values - 1; i++)
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g_assert_cmpint (g_value_get_int (&a->values[i]), <=, g_value_get_int (&a->values[i+1]));
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a2 = g_value_array_copy (a);
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for (i = 0; i < a->n_values; i++)
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g_assert_cmpint (g_value_get_int (&a->values[i]), ==, g_value_get_int (&a2->values[i]));
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g_value_array_free (a);
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g_value_array_free (a2);
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}
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/* We create some dummy objects with this relationship:
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*
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* GObject TestInterface
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* / \ / /
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* TestObjectA TestObjectB /
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* / \ /
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* TestObjectA1 TestObjectA2-------
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*
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* ie: TestObjectA1 and TestObjectA2 are subclasses of TestObjectA
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* and TestObjectB is related to neither. TestObjectA2 and TestObjectB
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* implement TestInterface
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*/
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typedef GTypeInterface TestInterfaceInterface;
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static GType test_interface_get_type (void);
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G_DEFINE_INTERFACE (TestInterface, test_interface, G_TYPE_OBJECT)
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static void test_interface_default_init (TestInterfaceInterface *iface) { }
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static GType test_object_a_get_type (void);
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typedef GObject TestObjectA; typedef GObjectClass TestObjectAClass;
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G_DEFINE_TYPE (TestObjectA, test_object_a, G_TYPE_OBJECT)
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static void test_object_a_class_init (TestObjectAClass *class) { }
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static void test_object_a_init (TestObjectA *a) { }
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static GType test_object_b_get_type (void);
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typedef GObject TestObjectB; typedef GObjectClass TestObjectBClass;
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static void test_object_b_iface_init (TestInterfaceInterface *iface) { }
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G_DEFINE_TYPE_WITH_CODE (TestObjectB, test_object_b, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (test_interface_get_type (), test_object_b_iface_init))
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static void test_object_b_class_init (TestObjectBClass *class) { }
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static void test_object_b_init (TestObjectB *b) { }
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static GType test_object_a1_get_type (void);
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typedef GObject TestObjectA1; typedef GObjectClass TestObjectA1Class;
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G_DEFINE_TYPE (TestObjectA1, test_object_a1, test_object_a_get_type ())
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static void test_object_a1_class_init (TestObjectA1Class *class) { }
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static void test_object_a1_init (TestObjectA1 *c) { }
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static GType test_object_a2_get_type (void);
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typedef GObject TestObjectA2; typedef GObjectClass TestObjectA2Class;
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static void test_object_a2_iface_init (TestInterfaceInterface *iface) { }
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G_DEFINE_TYPE_WITH_CODE (TestObjectA2, test_object_a2, test_object_a_get_type (),
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G_IMPLEMENT_INTERFACE (test_interface_get_type (), test_object_a2_iface_init))
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static void test_object_a2_class_init (TestObjectA2Class *class) { }
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static void test_object_a2_init (TestObjectA2 *b) { }
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static void
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test_value_transform_object (void)
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{
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GValue src = G_VALUE_INIT;
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GValue dest = G_VALUE_INIT;
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GObject *object;
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guint i, s, d;
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GType types[] = {
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G_TYPE_OBJECT,
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test_interface_get_type (),
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test_object_a_get_type (),
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test_object_b_get_type (),
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test_object_a1_get_type (),
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test_object_a2_get_type ()
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};
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for (i = 0; i < G_N_ELEMENTS (types); i++)
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{
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if (!G_TYPE_IS_CLASSED (types[i]))
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continue;
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object = g_object_new (types[i], NULL);
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for (s = 0; s < G_N_ELEMENTS (types); s++)
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{
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if (!G_TYPE_CHECK_INSTANCE_TYPE (object, types[s]))
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continue;
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g_value_init (&src, types[s]);
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g_value_set_object (&src, object);
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for (d = 0; d < G_N_ELEMENTS (types); d++)
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{
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g_test_message ("Next: %s object in GValue of %s to GValue of %s", g_type_name (types[i]), g_type_name (types[s]), g_type_name (types[d]));
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g_assert_true (g_value_type_transformable (types[s], types[d]));
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g_value_init (&dest, types[d]);
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g_assert_true (g_value_transform (&src, &dest));
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g_assert_cmpint (g_value_get_object (&dest) != NULL, ==, G_TYPE_CHECK_INSTANCE_TYPE (object, types[d]));
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g_value_unset (&dest);
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}
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g_value_unset (&src);
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}
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g_object_unref (object);
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}
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}
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int
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main (int argc, char *argv[])
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{
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g_test_init (&argc, &argv, NULL);
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g_test_add_func ("/value/basic", test_value_basic);
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g_test_add_func ("/value/string", test_value_string);
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g_test_add_func ("/value/array/basic", test_valuearray_basic);
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g_test_add_func ("/value/transform-object", test_value_transform_object);
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return g_test_run ();
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}
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