Brought over additional testing configurations from littlefs

Author: geky

.travis.yml

@@ -6,17 +6,21 @@ script:
     - PYTHONPATH=mbed-os python mbed-os/tools/make.py -t GCC_ARM -m K82F
           --source=. --build=BUILD/K82F/GCC_ARM -j0      
 
-      # Run local littlefs tests
-    - CFLAGS="
-          -DLFS_READ_SIZE=64
-          -DLFS_PROG_SIZE=64
-          -Wno-error=format"
-          make -Clittlefs test
-    - CFLAGS="
-          -DLFS_READ_SIZE=512
-          -DLFS_PROG_SIZE=512
-          -Wno-error=format"
-          make -Clittlefs test
+      # Run littlefs functional tests
+    - CFLAGS="-Wno-error=format" make -Clittlefs test
+
+      # Run littlefs functional tests with different configurations
+      # Note: r/w size of 64 is default in mbed
+    - CFLAGS="-Wno-error=format -DLFS_READ_SIZE=64 -DLFS_PROG_SIZE=64"
+            make -Clittlefs test
+    - CFLAGS="-Wno-error=format -DLFS_READ_SIZE=1 -DLFS_PROG_SIZE=1"
+            make -Clittlefs test
+    - CFLAGS="-Wno-error=format -DLFS_READ_SIZE=512 -DLFS_PROG_SIZE=512"
+            make -Clittlefs test
+    - CFLAGS="-Wno-error=format -DLFS_BLOCK_COUNT=1023"
+            make -Clittlefs test
+    - CFLAGS="-Wno-error=format -DLFS_LOOKAHEAD=2047"
+            make -Clittlefs test
 
 install:
       # Get arm-none-eabi-gcc