add tests for read/writePackedUInt, and fix a bug there.
git-svn-id: http://skia.googlecode.com/svn/trunk@2482 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/StreamTest.cpp b/tests/StreamTest.cpp
index f73e27c..85b1b2e 100644
--- a/tests/StreamTest.cpp
+++ b/tests/StreamTest.cpp
@@ -99,9 +99,41 @@
delete[] dst;
}
+static void TestPackedUInt(skiatest::Reporter* reporter) {
+ // we know that packeduint tries to write 1, 2 or 4 bytes for the length,
+ // so we test values around each of those transitions (and a few others)
+ const size_t sizes[] = {
+ 0, 1, 2, 0xFC, 0xFD, 0xFE, 0xFF, 0x100, 0x101, 32767, 32768, 32769,
+ 0xFFFD, 0xFFFE, 0xFFFF, 0x10000, 0x10001,
+ 0xFFFFFD, 0xFFFFFE, 0xFFFFFF, 0x1000000, 0x1000001,
+ 0x7FFFFFFE, 0x7FFFFFFF, 0x80000000, 0x80000001, 0xFFFFFFFE, 0xFFFFFFFF
+ };
+
+
+ size_t i;
+ char buffer[sizeof(sizes) * 4];
+
+ SkMemoryWStream wstream(buffer, sizeof(buffer));
+ for (i = 0; i < SK_ARRAY_COUNT(sizes); ++i) {
+ bool success = wstream.writePackedUInt(sizes[i]);
+ REPORTER_ASSERT(reporter, success);
+ }
+ wstream.flush();
+
+ SkMemoryStream rstream(buffer, sizeof(buffer));
+ for (i = 0; i < SK_ARRAY_COUNT(sizes); ++i) {
+ size_t n = rstream.readPackedUInt();
+ if (sizes[i] != n) {
+ SkDebugf("-- %d: sizes:%x n:%x\n", i, sizes[i], n);
+ }
+ REPORTER_ASSERT(reporter, sizes[i] == n);
+ }
+}
+
static void TestStreams(skiatest::Reporter* reporter) {
TestRStream(reporter);
TestWStream(reporter);
+ TestPackedUInt(reporter);
}
#include "TestClassDef.h"