Add test cases checking that growing a tree sets correct depth flags

test/implementations/onblocks/datatreestore/growing/DataTreeGrowingTest.cpp

@@ -26,5 +26,4 @@ TEST_F(DataTreeGrowingTest, GrowAOneNodeTree_FlushingWorks) {
   EXPECT_INNER_NODE_NUMBER_OF_LEAVES_IS(2, tree->key());
 }
 
-//TODO Test tree depth markers on the nodes
 //TODO Build-up test cases (build a leaf tree, add N leaves and check end state. End states for example FullTwoLevelTree, FullThreeLevelTree)

test/implementations/onblocks/datatreestore/growing/DataTreeGrowingTest_DepthFlags.cpp

@@ -0,0 +1,61 @@
+#include "testutils/DataTreeGrowingTest.h"
+
+using blockstore::Key;
+
+class DataTreeGrowingTest_DepthFlags: public DataTreeGrowingTest {
+public:
+  void CHECK_DEPTH(int depth, const Key &key) {
+    auto node = LoadInnerNode(key);
+    EXPECT_EQ(depth, node->depth());
+    if (depth > 1) {
+      for (int i = 0; i < node->numChildren(); ++i) {
+        CHECK_DEPTH(depth-1, node->getChild(i)->key());
+      }
+    }
+  }
+};
+
+TEST_F(DataTreeGrowingTest_DepthFlags, GrowAOneNodeTree) {
+  auto key = CreateTreeAddOneLeafReturnRootKey();
+  CHECK_DEPTH(1, key);
+}
+
+TEST_F(DataTreeGrowingTest_DepthFlags, GrowATwoNodeTree) {
+  auto key = CreateTreeAddTwoLeavesReturnRootKey();
+  CHECK_DEPTH(1, key);
+}
+
+TEST_F(DataTreeGrowingTest_DepthFlags, GrowATwoLevelThreeNodeTree) {
+  auto key = CreateTreeAddThreeLeavesReturnRootKey();
+  CHECK_DEPTH(1, key);
+}
+
+TEST_F(DataTreeGrowingTest_DepthFlags, GrowAThreeNodeChainedTree) {
+  auto key = CreateThreeNodeChainedTreeReturnRootKey();
+  AddLeafTo(key);
+  CHECK_DEPTH(2, key);
+}
+
+TEST_F(DataTreeGrowingTest_DepthFlags, GrowAFullTwoLevelTree) {
+  auto key = CreateFullTwoLevelTree();
+  AddLeafTo(key);
+  CHECK_DEPTH(2, key);
+}
+
+TEST_F(DataTreeGrowingTest_DepthFlags, GrowAThreeLevelTreeWithLowerLevelFull) {
+  auto key = CreateThreeLevelTreeWithLowerLevelFullReturnRootKey();
+  AddLeafTo(key);
+  CHECK_DEPTH(2, key);
+}
+
+TEST_F(DataTreeGrowingTest_DepthFlags, GrowAFullThreeLevelTree) {
+  auto key = CreateFullThreeLevelTree();
+  AddLeafTo(key);
+  CHECK_DEPTH(3, key);
+}
+
+TEST_F(DataTreeGrowingTest_DepthFlags, GrowAThreeLevelTreeWithTwoFullSubtrees) {
+  auto key = CreateThreeLevelTreeWithTwoFullSubtrees();
+  AddLeafTo(key);
+  CHECK_DEPTH(2, key);
+}