initial drop of phosphor-ipmi-blobs

This implements a majority of the OEM IPMI BLOBS protocol.  The only
piece missing from this is the timed expiration of sessions.

Change-Id: I82c9d17b625c94fc3340edcfabbbf1ffeb5ad7ac
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/test/ipmi_getcount_unittest.cpp b/test/ipmi_getcount_unittest.cpp
new file mode 100644
index 0000000..c6d74e6
--- /dev/null
+++ b/test/ipmi_getcount_unittest.cpp
@@ -0,0 +1,72 @@
+#include "ipmi.hpp"
+#include "manager_mock.hpp"
+
+#include <cstring>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+namespace blobs
+{
+
+using ::testing::Return;
+
+// ipmid.hpp isn't installed where we can grab it and this value is per BMC
+// SoC.
+#define MAX_IPMI_BUFFER 64
+
+// the request here is only the subcommand byte and therefore there's no invalid
+// length check, etc to handle within the method.
+
+TEST(BlobCountTest, ReturnsZeroBlobs)
+{
+    // Calling BmcBlobGetCount if there are no handlers registered should just
+    // return that there are 0 blobs.
+
+    ManagerMock mgr;
+    size_t dataLen;
+    uint8_t reply[MAX_IPMI_BUFFER] = {0};
+    struct BmcBlobCountTx req;
+    struct BmcBlobCountRx rep;
+    uint8_t* request = reinterpret_cast<uint8_t*>(&req);
+
+    req.cmd = BlobOEMCommands::bmcBlobGetCount;
+    dataLen = sizeof(req);
+
+    rep.crc = 0;
+    rep.blobCount = 0;
+
+    EXPECT_CALL(mgr, buildBlobList()).WillOnce(Return(0));
+
+    EXPECT_EQ(IPMI_CC_OK, getBlobCount(&mgr, request, reply, &dataLen));
+
+    EXPECT_EQ(sizeof(rep), dataLen);
+    EXPECT_EQ(0, std::memcmp(reply, &rep, sizeof(rep)));
+}
+
+TEST(BlobCountTest, ReturnsTwoBlobs)
+{
+    // Calling BmcBlobGetCount with one handler registered that knows of two
+    // blobs will return that it found two blobs.
+
+    ManagerMock mgr;
+    size_t dataLen;
+    uint8_t reply[MAX_IPMI_BUFFER] = {0};
+    struct BmcBlobCountTx req;
+    struct BmcBlobCountRx rep;
+    uint8_t* request = reinterpret_cast<uint8_t*>(&req);
+
+    req.cmd = BlobOEMCommands::bmcBlobGetCount;
+    dataLen = sizeof(req);
+
+    rep.crc = 0;
+    rep.blobCount = 2;
+
+    EXPECT_CALL(mgr, buildBlobList()).WillOnce(Return(2));
+
+    EXPECT_EQ(IPMI_CC_OK, getBlobCount(&mgr, request, reply, &dataLen));
+
+    EXPECT_EQ(sizeof(rep), dataLen);
+    EXPECT_EQ(0, std::memcmp(reply, &rep, sizeof(rep)));
+}
+} // namespace blobs