More unittests

git-svn-id: https://svn.kapsi.fi/jpa/nanopb@960 e3a754e5-d11d-0410-8d38-ebb782a927b9

5 files changed, 188 insertions, 9 deletions

diff --git a/docs/index.rst b/docs/index.rst
index f2f8dcfd..76580364 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -48,6 +48,7 @@ Features and limitations
 #) The deprecated Protocol Buffers feature called "groups" is not supported.
 #) Fields in the generated structs are ordered by the tag number, instead of the natural ordering in .proto file.
 #) Unknown fields are not preserved when decoding and re-encoding a message.
+#) Numeric arrays are always encoded as packed, even if not marked as packed in .proto. This causes incompatibility with decoders that do not support packed format.
 
 Getting started
 ===============
@@ -82,6 +83,12 @@ After that, buffer will contain the encoded message.
 The number of bytes in the message is stored in *stream.bytes_written*.
 You can feed the message to *protoc --decode=Example example.proto* to verify its validity.
 
+Debugging and testing
+=====================
+Extensive unittests are included under the *tests* folder. Just type *make* there to run the tests.
+
+This also generates a file called *breakpoints* which includes all lines returning *false* in nanopb. You can use this in gdb by typing *source breakpoints*, after which gdb will break on first nanopb error.
+
 Wishlist
 ========
 #) A specialized encoder for encoding to a memory buffer. Should serialize in reverse order to avoid having to determine submessage size beforehand.
diff --git a/pb_decode.c b/pb_decode.c
index 9208bdac..26924472 100644
--- a/pb_decode.c
+++ b/pb_decode.c
@@ -257,7 +257,7 @@ static bool decode_field(pb_istream_t *stream, int wire_type, pb_field_iterator_
                 while (substream.bytes_left && *size < iter->current->array_size)
                 {
                     void *pItem = (uint8_t*)iter->pData + iter->current->data_size * (*size);
-                    if (!func(stream, iter->current, pItem))
+                    if (!func(&substream, iter->current, pItem))
                         return false;
                     (*size)++;
                 }
@@ -381,7 +381,8 @@ bool pb_decode(pb_istream_t *stream, const pb_field_t fields[], void *dest_struc
         if (!pb_field_find(&iter, tag))
         {
             /* No match found, skip data */
-            skip(stream, wire_type);
+            if (!skip(stream, wire_type))
+                return false;
             continue;
         }
         
diff --git a/tests/Makefile b/tests/Makefile
index 115364b6..38bdb25f 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -11,10 +11,15 @@ clean:
 %.o: %.c $(DEPS)
 	$(CC) $(CFLAGS) -c -o $@ $<
 
-test_decode1: test_decode1.o ../pb_decode.o person.o
-test_encode1: test_encode1.o ../pb_encode.o person.o
-decode_unittests: decode_unittests.o ../pb_decode.o person.o
-encode_unittests: encode_unittests.o ../pb_encode.o person.o
+pb_encode.o: ../pb_encode.c $(DEPS)
+	$(CC) $(CFLAGS) -c -o $@ $<
+pb_decode.o: ../pb_decode.c $(DEPS)
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+test_decode1: test_decode1.o pb_decode.o person.o
+test_encode1: test_encode1.o pb_encode.o person.o
+decode_unittests: decode_unittests.o pb_decode.o person.o
+encode_unittests: encode_unittests.o pb_encode.o person.o
 
 person.c person.h: person.proto
 	protoc -I. -I../generator -I/usr/include -operson.pb $<
@@ -23,11 +28,13 @@ person.c person.h: person.proto
 breakpoints: ../*.c *.c
 	grep -n 'return false;' $^ | cut -d: -f-2 | xargs -n 1 echo b > $@
 
-coverage:
-	gcov -o .. ../pb_encode.c
-	gcov -o .. ../pb_decode.c
+coverage: run_unittests
+	gcov pb_encode.gcda
+	gcov pb_decode.gcda
 
 run_unittests: decode_unittests encode_unittests test_encode1 test_decode1
+	rm -f *.gcda
+	
 	./decode_unittests > /dev/null
 	./encode_unittests > /dev/null
 	
diff --git a/tests/decode_unittests.c b/tests/decode_unittests.c
index e733379d..85dd8d58 100644
--- a/tests/decode_unittests.c
+++ b/tests/decode_unittests.c
@@ -15,6 +15,43 @@ bool stream_callback(pb_istream_t *stream, uint8_t *buf, size_t count)
     return true;
 }
 
+typedef struct { size_t data_count; int32_t data[10]; } IntegerArray;
+const pb_field_t IntegerArray_fields[] = {
+    {1, PB_HTYPE_ARRAY | PB_LTYPE_VARINT, offsetof(IntegerArray, data),
+    pb_delta(IntegerArray, data_count, data),
+    pb_membersize(IntegerArray, data[0]),
+    pb_membersize(IntegerArray, data) / pb_membersize(IntegerArray, data[0])},
+    
+    PB_LAST_FIELD
+};
+
+typedef struct { pb_callback_t data; } CallbackArray;
+const pb_field_t CallbackArray_fields[] = {
+    {1, PB_HTYPE_CALLBACK | PB_LTYPE_VARINT, offsetof(CallbackArray, data),
+    0, pb_membersize(CallbackArray, data), 0},
+    
+    PB_LAST_FIELD
+};
+
+/* Verifies that the stream passed to callback matches the byte array pointed to by arg. */
+bool callback_check(pb_istream_t *stream, const pb_field_t *field, void *arg)
+{
+    int i;
+    uint8_t byte;
+    pb_bytes_array_t *ref = (pb_bytes_array_t*) arg;
+    
+    for (i = 0; i < ref->size; i++)
+    {
+        if (!pb_read(stream, &byte, 1))
+            return false;
+        
+        if (byte != ref->bytes[i])
+            return false;
+    }
+    
+    return true;
+}
+
 int main()
 {
     int status = 0;
@@ -72,6 +109,7 @@ int main()
         TEST((s = S("\xAC\x02""foobar"), pb_skip_varint(&s) && s.bytes_left == 6))
         TEST((s = S("\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x01""foobar"),
               pb_skip_varint(&s) && s.bytes_left == 6))
+        TEST((s = S("\xFF"), !pb_skip_varint(&s)))
     }
     
     {
@@ -79,6 +117,8 @@ int main()
         COMMENT("Test pb_skip_string")
         TEST((s = S("\x00""foobar"), pb_skip_string(&s) && s.bytes_left == 6))
         TEST((s = S("\x04""testfoobar"), pb_skip_string(&s) && s.bytes_left == 6))
+        TEST((s = S("\x04"), !pb_skip_string(&s)))
+        TEST((s = S("\xFF"), !pb_skip_string(&s)))
     }
     
     {
@@ -165,6 +205,83 @@ int main()
         TEST((s = S("\x05xyzzy"), !pb_dec_string(&s, &f, &d)))
     }
     
+    {
+        pb_istream_t s;
+        IntegerArray dest;
+        
+        COMMENT("Testing pb_decode with repeated int32 field")
+        TEST((s = S(""), pb_decode(&s, IntegerArray_fields, &dest) && dest.data_count == 0))
+        TEST((s = S("\x08\x01\x08\x02"), pb_decode(&s, IntegerArray_fields, &dest)
+             && dest.data_count == 2 && dest.data[0] == 1 && dest.data[1] == 2))
+        s = S("\x08\x01\x08\x02\x08\x03\x08\x04\x08\x05\x08\x06\x08\x07\x08\x08\x08\x09\x08\x0A");
+        TEST(pb_decode(&s, IntegerArray_fields, &dest) && dest.data_count == 10 && dest.data[9] == 10)
+        s = S("\x08\x01\x08\x02\x08\x03\x08\x04\x08\x05\x08\x06\x08\x07\x08\x08\x08\x09\x08\x0A\x08\x0B");
+        TEST(!pb_decode(&s, IntegerArray_fields, &dest))
+    }
+    
+    {
+        pb_istream_t s;
+        IntegerArray dest;
+        
+        COMMENT("Testing pb_decode with packed int32 field")
+        TEST((s = S("\x0A\x01\x01"), pb_decode(&s, IntegerArray_fields, &dest)
+            && dest.data_count == 1 && dest.data[0] == 1))
+        TEST((s = S("\x0A\x0A\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A"), pb_decode(&s, IntegerArray_fields, &dest)
+            && dest.data_count == 10 && dest.data[0] == 1 && dest.data[9] == 10))
+        TEST((s = S("\x0A\x0B\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B"), !pb_decode(&s, IntegerArray_fields, &dest)))
+        
+        /* Test invalid wire data */
+        TEST((s = S("\x0A\xFF"), !pb_decode(&s, IntegerArray_fields, &dest)))
+        TEST((s = S("\x0A\x01"), !pb_decode(&s, IntegerArray_fields, &dest)))
+    }
+    
+    {
+        pb_istream_t s;
+        IntegerArray dest;
+        
+        COMMENT("Testing pb_decode with unknown fields")
+        TEST((s = S("\x18\x0F\x08\x01"), pb_decode(&s, IntegerArray_fields, &dest)
+            && dest.data_count == 1 && dest.data[0] == 1))
+        TEST((s = S("\x19\x00\x00\x00\x00\x00\x00\x00\x00\x08\x01"), pb_decode(&s, IntegerArray_fields, &dest)
+            && dest.data_count == 1 && dest.data[0] == 1))
+        TEST((s = S("\x1A\x00\x08\x01"), pb_decode(&s, IntegerArray_fields, &dest)
+            && dest.data_count == 1 && dest.data[0] == 1))
+        TEST((s = S("\x1B\x08\x01"), !pb_decode(&s, IntegerArray_fields, &dest)))
+        TEST((s = S("\x1D\x00\x00\x00\x00\x08\x01"), pb_decode(&s, IntegerArray_fields, &dest)
+            && dest.data_count == 1 && dest.data[0] == 1))
+    }
+    
+    {
+        pb_istream_t s;
+        CallbackArray dest;
+        struct { size_t size; uint8_t bytes[10]; } ref;
+        dest.data.funcs.decode = &callback_check;
+        dest.data.arg = &ref;
+        
+        COMMENT("Testing pb_decode with callbacks")
+        /* Single varint */
+        ref.size = 1; ref.bytes[0] = 0x55;
+        TEST((s = S("\x08\x55"), pb_decode(&s, CallbackArray_fields, &dest)))
+        /* Packed varint */
+        ref.size = 3; ref.bytes[0] = ref.bytes[1] = ref.bytes[2] = 0x55;
+        TEST((s = S("\x0A\x03\x55\x55\x55"), pb_decode(&s, CallbackArray_fields, &dest)))
+        /* Packed varint with loop */
+        ref.size = 1; ref.bytes[0] = 0x55;
+        TEST((s = S("\x0A\x03\x55\x55\x55"), pb_decode(&s, CallbackArray_fields, &dest)))
+        /* Single fixed32 */
+        ref.size = 4; ref.bytes[0] = ref.bytes[1] = ref.bytes[2] = ref.bytes[3] = 0xAA;
+        TEST((s = S("\x0D\xAA\xAA\xAA\xAA"), pb_decode(&s, CallbackArray_fields, &dest)))
+        /* Single fixed64 */
+        ref.size = 8; memset(ref.bytes, 0xAA, 8);
+        TEST((s = S("\x09\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"), pb_decode(&s, CallbackArray_fields, &dest)))
+        /* Unsupported field type */
+        TEST((s = S("\x0B\x00"), !pb_decode(&s, CallbackArray_fields, &dest)))
+        
+        /* Just make sure that our test function works */
+        ref.size = 1; ref.bytes[0] = 0x56;
+        TEST((s = S("\x08\x55"), !pb_decode(&s, CallbackArray_fields, &dest)))
+    }
+    
     if (status != 0)
         fprintf(stdout, "\n\nSome tests FAILED!\n");
     
diff --git a/tests/encode_unittests.c b/tests/encode_unittests.c
index 645dd21a..ee7f7a34 100644
--- a/tests/encode_unittests.c
+++ b/tests/encode_unittests.c
@@ -116,6 +116,53 @@ int main()
         TEST(WRITES(pb_enc_svarint(&s, &field, &lmin), "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x01"));
     }
     
+    {
+        uint8_t buffer[30];
+        pb_ostream_t s;
+        pb_field_t field = {1, PB_LTYPE_FIXED, 0, 0, sizeof(float)};
+        float fvalue;
+        double dvalue;
+        
+        COMMENT("Test pb_enc_fixed using float")
+        fvalue = 0.0f;
+        TEST(WRITES(pb_enc_fixed(&s, &field, &fvalue), "\x00\x00\x00\x00"))
+        fvalue = 99.0f;
+        TEST(WRITES(pb_enc_fixed(&s, &field, &fvalue), "\x00\x00\xc6\x42"))
+        fvalue = -12345678.0f;
+        TEST(WRITES(pb_enc_fixed(&s, &field, &fvalue), "\x4e\x61\x3c\xcb"))
+    
+        COMMENT("Test pb_enc_fixed using double")
+        field.data_size = sizeof(double);
+        dvalue = 0.0;
+        TEST(WRITES(pb_enc_fixed(&s, &field, &dvalue), "\x00\x00\x00\x00\x00\x00\x00\x00"))
+        dvalue = 99.0;
+        TEST(WRITES(pb_enc_fixed(&s, &field, &dvalue), "\x00\x00\x00\x00\x00\xc0\x58\x40"))
+        dvalue = -12345678.0;
+        TEST(WRITES(pb_enc_fixed(&s, &field, &dvalue), "\x00\x00\x00\xc0\x29\x8c\x67\xc1"))
+    }
+    
+    {
+        uint8_t buffer[30];
+        pb_ostream_t s;
+        struct { size_t size; uint8_t bytes[5]; } value = {5, {'x', 'y', 'z', 'z', 'y'}};
+    
+        COMMENT("Test pb_enc_bytes")
+        TEST(WRITES(pb_enc_bytes(&s, NULL, &value), "\x05xyzzy"))
+        value.size = 0;
+        TEST(WRITES(pb_enc_bytes(&s, NULL, &value), "\x00"))
+    }
+    
+    {
+        uint8_t buffer[30];
+        pb_ostream_t s;
+        char value[] = "xyzzy";
+        
+        COMMENT("Test pb_enc_string")
+        TEST(WRITES(pb_enc_string(&s, NULL, &value), "\x05xyzzy"))
+        value[0] = '\0';
+        TEST(WRITES(pb_enc_string(&s, NULL, &value), "\x00"))
+    }
+    
     if (status != 0)
         fprintf(stdout, "\n\nSome tests FAILED!\n");