added glshim library

project/jni/glshim/test/tests/util/gl_str.c

@@ -0,0 +1,10 @@
+#include "gl_str.h"
+
+int main() {
+#define check(func, name) assert(strcmp(func(name), #name) == 0);
+    check(gl_str_primitive, GL_QUADS);
+    check(gl_str, GL_FLOAT);
+    check(gl_bits_glPushClientAttrib, GL_CLIENT_ALL_ATTRIB_BITS);
+    check(gl_bits_glPushAttrib, GL_CURRENT_BIT | GL_POINT_BIT);
+    mock_return;
+}

project/jni/glshim/test/tests/util/tack.c

@@ -0,0 +1,30 @@
+int main() {
+    tack_t stack = {0};
+    tack_push(&stack, 1);
+    assert(tack_peek(&stack) == 1);
+    assert(tack_len(&stack) == 1);
+
+    tack_push(&stack, 2);
+    tack_push(&stack, 3);
+    assert(tack_get(&stack, 0) == 1);
+    assert(tack_peek(&stack) == 3);
+    assert(tack_pop(&stack) == 3);
+    assert(tack_peek(&stack) == 2);
+
+    tack_clear(&stack);
+    assert(tack_len(&stack) == 0);
+
+    for (int i = 0; i < 10000; i++) {
+        tack_push(&stack, i);
+        assert(tack_peek(&stack) == i);
+    }
+    for (int i = 0; i < 10000; i++) {
+        assert(tack_shift(&stack) == i);
+    }
+
+    tack_clear(&stack);
+    tack_set(&stack, 1, "test");
+    assert(tack_get(&stack, 0) == NULL);
+    assert(strcmp(tack_get(&stack, 1), "test") == 0);
+    mock_return;
+}