diff --git a/src/userland/buffersTests/include/buffers.h b/src/userland/buffersTests/include/buffers.h
index 003539b..39995d6 100644
--- a/src/userland/buffersTests/include/buffers.h
+++ b/src/userland/buffersTests/include/buffers.h
@@ -115,20 +115,22 @@
 #define STRING_Length_id() STRING_Length
 #define MAP_Length_id() MAP_Length
 
-#define LENGTH(type, ...) DEFER(type##_Length_id)()(__VA_ARGS__)
+#define ARRAY_Length(contents) arrayLength(contents(ONE, +)) + contents(LENGTH, +)
+#define MAP_Length(contents) mapLength(contents(ONE, +)) + contents(LENGTH, +)
 
+#define LENGTH(type, ...) DEFER(type##_Length_id)()(__VA_ARGS__)
 
 #define _INTEGER_WRITE(x, type, ...) buffer = integerWrite(buffer, x, type);
 #define INTEGER_Write(x, ...) _INTEGER_WRITE(x, ##__VA_ARGS__ , Unsigned)
 #define INTEGER_Write_id() INTEGER_Write
+#define ARRAY_Write_id() ARRAY_Write
+
+#define ARRAY_Write(contents) buffer = arrayWrite(buffer, contents(ONE, +)); contents(WRITE, NOTHING)
 
 #define WRITE(type, ...) DEFER(type##_Write_id)()(__VA_ARGS__)
 
 #define CONTENTS contents (LENGTH, +)
 
-#define ARRAY_Length(contents) arrayLength(contents(ONE, +)) + contents(LENGTH, +)
-#define MAP_Length(contents) mapLength(contents(ONE, +)) + contents(LENGTH, +)
-
 #define CREATE(name, definition) \
     uint32_t name##Length = EXPAND(definition(LENGTH)); \
     void *name = malloc(name##Length); \

diff --git a/src/userland/buffersTests/include/buffers.h b/src/userland/buffersTests/include/buffers.h
index 003539b..39995d6 100644
--- a/src/userland/buffersTests/include/buffers.h
+++ b/src/userland/buffersTests/include/buffers.h
@@ -115,20 +115,22 @@
 #define STRING_Length_id() STRING_Length
 #define MAP_Length_id() MAP_Length
 
-#define LENGTH(type, ...) DEFER(type##_Length_id)()(__VA_ARGS__)
+#define ARRAY_Length(contents) arrayLength(contents(ONE, +)) + contents(LENGTH, +)
+#define MAP_Length(contents) mapLength(contents(ONE, +)) + contents(LENGTH, +)
 
+#define LENGTH(type, ...) DEFER(type##_Length_id)()(__VA_ARGS__)
 
 #define _INTEGER_WRITE(x, type, ...) buffer = integerWrite(buffer, x, type);
 #define INTEGER_Write(x, ...) _INTEGER_WRITE(x, ##__VA_ARGS__ , Unsigned)
 #define INTEGER_Write_id() INTEGER_Write
+#define ARRAY_Write_id() ARRAY_Write
+
+#define ARRAY_Write(contents) buffer = arrayWrite(buffer, contents(ONE, +)); contents(WRITE, NOTHING)
 
 #define WRITE(type, ...) DEFER(type##_Write_id)()(__VA_ARGS__)
 
 #define CONTENTS contents (LENGTH, +)
 
-#define ARRAY_Length(contents) arrayLength(contents(ONE, +)) + contents(LENGTH, +)
-#define MAP_Length(contents) mapLength(contents(ONE, +)) + contents(LENGTH, +)
-
 #define CREATE(name, definition) \
     uint32_t name##Length = EXPAND(definition(LENGTH)); \
     void *name = malloc(name##Length); \
diff --git a/src/userland/buffersTests/main.c b/src/userland/buffersTests/main.c
index ada8f69..aff8951 100644
--- a/src/userland/buffersTests/main.c
+++ b/src/userland/buffersTests/main.c
@@ -224,10 +224,39 @@
 }
 
 uint32_t arrayLength(uint32_t elementCount) {
-    // TODO
+    if ((elementCount & formatInfo[FORMAT_FIXARRAY].readTypeParameter) == elementCount) {
+        return 1;
+    }
+    if ((uint16_t)elementCount == elementCount) {
+        return 3;
+    }
+    if ((uint32_t)elementCount == elementCount) {
+        return 5;
+    }
+    // TODO: 64 bit numbers
     return 1;
 }
 
+void *arrayWrite(void *buffer, uint32_t elementCount) {
+    uint8_t *bufferByte = buffer;
+    if ((elementCount & formatInfo[FORMAT_FIXARRAY].readTypeParameter) == elementCount) {
+        *bufferByte = formatInfo[FORMAT_FIXARRAY].min + elementCount;
+        return buffer + 1;
+    }
+    if ((uint16_t)elementCount == elementCount) {
+        *bufferByte = formatInfo[FORMAT_ARRAY16].min;
+        *(uint16_t *)(buffer + 1) = (uint16_t) elementCount;
+        return buffer + 3;
+    }
+    if ((uint32_t)elementCount == elementCount) {
+        *bufferByte = formatInfo[FORMAT_ARRAY32].min;
+        *(uint32_t *)(buffer + 1) = (uint32_t) elementCount;
+        return buffer + 5;
+    }
+    // TODO: 64 bit numbers
+    return buffer;
+}
+
 uint32_t mapLength(uint32_t elementCount) {
     // TODO
     return 1;
@@ -236,12 +265,13 @@
 #define SAMPLE_1(X) \
     X(INTEGER, 500, Signed)
 
-#define SAMPLE_2_ARRAY_CONTENTS(X, S) \
+#define SAMPLE_2_ARRAY_CONTENT(X, S) \
     X(INTEGER, 1) S \
-    X(STRING, "hi") \
+    X(INTEGER, 500, Signed)
+    // X(STRING, "hi") \
 
 #define SAMPLE_2(X) \
-    X(ARRAY, SAMPLE_2_ARRAY_CONTENTS)
+    X(ARRAY, SAMPLE_2_ARRAY_CONTENT)
 
 #define SAMPLE_3_MAP_CONTENTS(X, S) \
     X(INTEGER, 1) S \
@@ -257,7 +287,7 @@
         initialize();
     }
     printf("dumping test data...\n");
-    CREATE(test, SAMPLE_1);
+    CREATE(test, SAMPLE_2);
     printf("test 1 length: %i\n", testLength);
     dumpPack(test, 0);
     free(test);