tools/test: add updater tests to increase coverage

Add missing unit-tests for the updater.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: Ieb668561e6cc7285549406d830f1295039dec4c0
diff --git a/tools/test/tools_bt_unittest.cpp b/tools/test/tools_bt_unittest.cpp
index c764f54..a5fab59 100644
--- a/tools/test/tools_bt_unittest.cpp
+++ b/tools/test/tools_bt_unittest.cpp
@@ -2,10 +2,15 @@
 #include "internal_sys_mock.hpp"
 #include "progress_mock.hpp"
 
+#include <ipmiblob/blob_errors.hpp>
 #include <ipmiblob/test/blob_interface_mock.hpp>
 
 #include <cstring>
+#include <memory>
+#include <string>
+#include <vector>
 
+#include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
 namespace host_tool
@@ -19,25 +24,38 @@
 using ::testing::Invoke;
 using ::testing::NotNull;
 using ::testing::Return;
+using ::testing::Throw;
 
-TEST(BtHandlerTest, verifySendsFileContents)
+class BtHandlerTest : public ::testing::Test
+{
+  protected:
+    static constexpr std::uint16_t session = 0xbeef;
+
+    BtHandlerTest() :
+        handler(std::make_unique<BtDataHandler>(&blobMock, &progMock, &sysMock))
+    {}
+
+    internal::InternalSysMock sysMock;
+    ipmiblob::BlobInterfaceMock blobMock;
+    ProgressMock progMock;
+    std::unique_ptr<BtDataHandler> handler;
+    const std::string filePath = "/asdf";
+};
+
+TEST_F(BtHandlerTest, verifySendsFileContents)
 {
     /* In this very basic test, we'll feed the bt handler data from the internal
      * syscall mock and catch the writes via the blob mock.
      */
-    internal::InternalSysMock sysMock;
-    ipmiblob::BlobInterfaceMock blobMock;
-    ProgressMock progMock;
-
-    BtDataHandler handler(&blobMock, &progMock, &sysMock);
-    std::string filePath = "/asdf";
     int fd = 1;
-    std::uint16_t session = 0xbeef;
     std::vector<std::uint8_t> bytes = {'1', '2', '3', '4'};
     const int fakeFileSize = 100;
 
     EXPECT_CALL(sysMock, open(Eq(filePath), _)).WillOnce(Return(fd));
     EXPECT_CALL(sysMock, getSize(Eq(filePath))).WillOnce(Return(fakeFileSize));
+
+    EXPECT_CALL(progMock, start(fakeFileSize));
+
     EXPECT_CALL(sysMock, read(fd, NotNull(), _))
         .WillOnce(Invoke([&](int fd, void* buf, std::size_t count) {
             EXPECT_TRUE(count > bytes.size());
@@ -45,11 +63,65 @@
             return bytes.size();
         }))
         .WillOnce(Return(0));
+
+    EXPECT_CALL(progMock, updateProgress(bytes.size()));
+
     EXPECT_CALL(sysMock, close(fd)).WillOnce(Return(0));
 
     EXPECT_CALL(blobMock, writeBytes(session, 0, ContainerEq(bytes)));
 
-    EXPECT_TRUE(handler.sendContents(filePath, session));
+    EXPECT_TRUE(handler->sendContents(filePath, session));
+}
+
+TEST_F(BtHandlerTest, sendContentsFailsToOpenFile)
+{
+    /* If the file doesn't exist or the permissions are wrong, the sendContents
+     * will return failure.
+     */
+    EXPECT_CALL(sysMock, open(Eq(filePath), _)).WillOnce(Return(-1));
+
+    EXPECT_FALSE(handler->sendContents(filePath, session));
+}
+
+TEST_F(BtHandlerTest, sendContentsWithEmptyFile)
+{
+    /* An empty file should return failure from the sendContents. */
+    int fd = 1;
+
+    EXPECT_CALL(sysMock, open(Eq(filePath), _)).WillOnce(Return(fd));
+    EXPECT_CALL(sysMock, getSize(Eq(filePath))).WillOnce(Return(0));
+
+    EXPECT_FALSE(handler->sendContents(filePath, session));
+}
+
+TEST_F(BtHandlerTest, sendContentsFailsWhenBlobHandlerThrows)
+{
+    /* The blob handler throws an exception which is caught, the file is closed,
+     * and false is returned.
+     */
+
+    int fd = 1;
+    std::vector<std::uint8_t> bytes = {'1', '2', '3', '4'};
+    const int fakeFileSize = 100;
+
+    EXPECT_CALL(sysMock, open(Eq(filePath), _)).WillOnce(Return(fd));
+    EXPECT_CALL(sysMock, getSize(Eq(filePath))).WillOnce(Return(fakeFileSize));
+
+    EXPECT_CALL(progMock, start(fakeFileSize));
+
+    EXPECT_CALL(sysMock, read(fd, NotNull(), _))
+        .WillOnce(Invoke([&](int fd, void* buf, std::size_t count) {
+            EXPECT_TRUE(count > bytes.size());
+            std::memcpy(buf, bytes.data(), bytes.size());
+            return bytes.size();
+        }));
+
+    EXPECT_CALL(blobMock, writeBytes(session, 0, ContainerEq(bytes)))
+        .WillOnce(Throw(ipmiblob::BlobException("failure")));
+
+    EXPECT_CALL(sysMock, close(fd)).WillOnce(Return(0));
+
+    EXPECT_FALSE(handler->sendContents(filePath, session));
 }
 
 } // namespace