1 files changed, 287 insertions, 0 deletions
diff --git a/tests/encode_unittests/encode_unittests.c b/tests/encode_unittests/encode_unittests.c
new file mode 100644
index 00000000..c3634ac8
--- /dev/null
+++ b/tests/encode_unittests/encode_unittests.c
@@ -0,0 +1,287 @@
+#define NANOPB_INTERNALS
+
+#include <stdio.h>
+#include <string.h>
+#include "pb_encode.h"
+#include "unittests.h"
+#include "unittestproto.pb.h"
+
+bool streamcallback(pb_ostream_t *stream, const uint8_t *buf, size_t count)
+{
+    /* Allow only 'x' to be written */
+    while (count--)
+    {
+        if (*buf++ != 'x')
+            return false;
+    }
+    return true;
+}
+
+bool fieldcallback(pb_ostream_t *stream, const pb_field_t *field, void * const *arg)
+{
+    int value = 0x55;
+    if (!pb_encode_tag_for_field(stream, field))
+        return false;
+    return pb_encode_varint(stream, value);
+}
+
+bool crazyfieldcallback(pb_ostream_t *stream, const pb_field_t *field, void * const *arg)
+{
+    /* This callback writes different amount of data the second time. */
+    uint32_t *state = (uint32_t*)arg;
+    *state <<= 8;
+    if (!pb_encode_tag_for_field(stream, field))
+        return false;
+    return pb_encode_varint(stream, *state);
+}
+
+/* Check that expression x writes data y.
+ * Y is a string, which may contain null bytes. Null terminator is ignored.
+ */
+#define WRITES(x, y) \
+memset(buffer, 0xAA, sizeof(buffer)), \
+s = pb_ostream_from_buffer(buffer, sizeof(buffer)), \
+(x) && \
+memcmp(buffer, y, sizeof(y) - 1) == 0 && \
+buffer[sizeof(y) - 1] == 0xAA
+
+int main()
+{
+    int status = 0;
+    
+    {
+        uint8_t buffer1[] = "foobartest1234";
+        uint8_t buffer2[sizeof(buffer1)];
+        pb_ostream_t stream = pb_ostream_from_buffer(buffer2, sizeof(buffer1));
+        
+        COMMENT("Test pb_write and pb_ostream_t");
+        TEST(pb_write(&stream, buffer1, sizeof(buffer1)));
+        TEST(memcmp(buffer1, buffer2, sizeof(buffer1)) == 0);
+        TEST(!pb_write(&stream, buffer1, 1));
+        TEST(stream.bytes_written == sizeof(buffer1));
+    }
+    
+    {
+        uint8_t buffer1[] = "xxxxxxx";
+        pb_ostream_t stream = {&streamcallback, 0, SIZE_MAX, 0};
+        
+        COMMENT("Test pb_write with custom callback");
+        TEST(pb_write(&stream, buffer1, 5));
+        buffer1[0] = 'a';
+        TEST(!pb_write(&stream, buffer1, 5));
+    }
+    
+    {
+        uint8_t buffer[30];
+        pb_ostream_t s;
+        
+        COMMENT("Test pb_encode_varint")
+        TEST(WRITES(pb_encode_varint(&s, 0), "\0"));
+        TEST(WRITES(pb_encode_varint(&s, 1), "\1"));
+        TEST(WRITES(pb_encode_varint(&s, 0x7F), "\x7F"));
+        TEST(WRITES(pb_encode_varint(&s, 0x80), "\x80\x01"));
+        TEST(WRITES(pb_encode_varint(&s, UINT32_MAX), "\xFF\xFF\xFF\xFF\x0F"));
+        TEST(WRITES(pb_encode_varint(&s, UINT64_MAX), "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x01"));
+    }
+    
+    {
+        uint8_t buffer[30];
+        pb_ostream_t s;
+        
+        COMMENT("Test pb_encode_tag")
+        TEST(WRITES(pb_encode_tag(&s, PB_WT_STRING, 5), "\x2A"));
+        TEST(WRITES(pb_encode_tag(&s, PB_WT_VARINT, 99), "\x98\x06"));
+    }
+    
+    {
+        uint8_t buffer[30];
+        pb_ostream_t s;
+        pb_field_t field = {10, PB_LTYPE_SVARINT};
+        
+        COMMENT("Test pb_encode_tag_for_field")
+        TEST(WRITES(pb_encode_tag_for_field(&s, &field), "\x50"));
+        
+        field.type = PB_LTYPE_FIXED64;
+        TEST(WRITES(pb_encode_tag_for_field(&s, &field), "\x51"));
+        
+        field.type = PB_LTYPE_STRING;
+        TEST(WRITES(pb_encode_tag_for_field(&s, &field), "\x52"));
+        
+        field.type = PB_LTYPE_FIXED32;
+        TEST(WRITES(pb_encode_tag_for_field(&s, &field), "\x55"));
+    }
+    
+    {
+        uint8_t buffer[30];
+        pb_ostream_t s;
+        
+        COMMENT("Test pb_encode_string")
+        TEST(WRITES(pb_encode_string(&s, (const uint8_t*)"abcd", 4), "\x04""abcd"));
+        TEST(WRITES(pb_encode_string(&s, (const uint8_t*)"abcd\x00", 5), "\x05""abcd\x00"));
+        TEST(WRITES(pb_encode_string(&s, (const uint8_t*)"", 0), "\x00"));
+    }
+    
+    {
+        uint8_t buffer[30];
+        pb_ostream_t s;
+        uint8_t value = 1;
+        int32_t max = INT32_MAX;
+        int32_t min = INT32_MIN;
+        int64_t lmax = INT64_MAX;
+        int64_t lmin = INT64_MIN;
+        pb_field_t field = {1, PB_LTYPE_VARINT, 0, 0, sizeof(value)};
+        
+        COMMENT("Test pb_enc_varint and pb_enc_svarint")
+        TEST(WRITES(pb_enc_varint(&s, &field, &value), "\x01"));
+        
+        field.data_size = sizeof(max);
+        TEST(WRITES(pb_enc_svarint(&s, &field, &max), "\xfe\xff\xff\xff\x0f"));
+        TEST(WRITES(pb_enc_svarint(&s, &field, &min), "\xff\xff\xff\xff\x0f"));
+        
+        field.data_size = sizeof(lmax);
+        TEST(WRITES(pb_enc_svarint(&s, &field, &lmax), "\xFE\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x01"));
+        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;
+        float fvalue;
+        double dvalue;
+        
+        COMMENT("Test pb_enc_fixed32 using float")
+        fvalue = 0.0f;
+        TEST(WRITES(pb_enc_fixed32(&s, NULL, &fvalue), "\x00\x00\x00\x00"))
+        fvalue = 99.0f;
+        TEST(WRITES(pb_enc_fixed32(&s, NULL, &fvalue), "\x00\x00\xc6\x42"))
+        fvalue = -12345678.0f;
+        TEST(WRITES(pb_enc_fixed32(&s, NULL, &fvalue), "\x4e\x61\x3c\xcb"))
+    
+        COMMENT("Test pb_enc_fixed64 using double")
+        dvalue = 0.0;
+        TEST(WRITES(pb_enc_fixed64(&s, NULL, &dvalue), "\x00\x00\x00\x00\x00\x00\x00\x00"))
+        dvalue = 99.0;
+        TEST(WRITES(pb_enc_fixed64(&s, NULL, &dvalue), "\x00\x00\x00\x00\x00\xc0\x58\x40"))
+        dvalue = -12345678.0;
+        TEST(WRITES(pb_enc_fixed64(&s, NULL, &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[30] = "xyzzy";
+        
+        COMMENT("Test pb_enc_string")
+        TEST(WRITES(pb_enc_string(&s, &StringMessage_fields[0], &value), "\x05xyzzy"))
+        value[0] = '\0';
+        TEST(WRITES(pb_enc_string(&s, &StringMessage_fields[0], &value), "\x00"))
+        memset(value, 'x', 30);
+        TEST(WRITES(pb_enc_string(&s, &StringMessage_fields[0], &value), "\x0Axxxxxxxxxx"))
+    }
+    
+    {
+        uint8_t buffer[10];
+        pb_ostream_t s;
+        IntegerArray msg = {5, {1, 2, 3, 4, 5}};
+        
+        COMMENT("Test pb_encode with int32 array")
+        
+        TEST(WRITES(pb_encode(&s, IntegerArray_fields, &msg), "\x0A\x05\x01\x02\x03\x04\x05"))
+        
+        msg.data_count = 0;
+        TEST(WRITES(pb_encode(&s, IntegerArray_fields, &msg), ""))
+        
+        msg.data_count = 10;
+        TEST(!pb_encode(&s, IntegerArray_fields, &msg))
+    }
+    
+    {
+        uint8_t buffer[10];
+        pb_ostream_t s;
+        FloatArray msg = {1, {99.0f}};
+        
+        COMMENT("Test pb_encode with float array")
+        
+        TEST(WRITES(pb_encode(&s, FloatArray_fields, &msg),
+                    "\x0A\x04\x00\x00\xc6\x42"))
+        
+        msg.data_count = 0;
+        TEST(WRITES(pb_encode(&s, FloatArray_fields, &msg), ""))
+        
+        msg.data_count = 3;
+        TEST(!pb_encode(&s, FloatArray_fields, &msg))
+    }
+    
+    {
+        uint8_t buffer[10];
+        pb_ostream_t s;
+        CallbackArray msg;
+        
+        msg.data.funcs.encode = &fieldcallback;
+        
+        COMMENT("Test pb_encode with callback field.")
+        TEST(WRITES(pb_encode(&s, CallbackArray_fields, &msg), "\x08\x55"))
+    }
+    
+    {
+        uint8_t buffer[10];
+        pb_ostream_t s;
+        IntegerContainer msg = {{5, {1,2,3,4,5}}};
+        
+        COMMENT("Test pb_encode with packed array in a submessage.")
+        TEST(WRITES(pb_encode(&s, IntegerContainer_fields, &msg),
+                    "\x0A\x07\x0A\x05\x01\x02\x03\x04\x05"))
+    }
+    
+    {
+        uint8_t buffer[20];
+        pb_ostream_t s;
+        IntegerContainer msg = {{5, {1,2,3,4,5}}};
+        
+        COMMENT("Test pb_encode_delimited.")
+        TEST(WRITES(pb_encode_delimited(&s, IntegerContainer_fields, &msg),
+                    "\x09\x0A\x07\x0A\x05\x01\x02\x03\x04\x05"))
+    }
+    
+    {
+        uint8_t buffer[10];
+        pb_ostream_t s;
+        CallbackContainer msg;
+        CallbackContainerContainer msg2;
+        uint32_t state = 1;
+        
+        msg.submsg.data.funcs.encode = &fieldcallback;
+        msg2.submsg.submsg.data.funcs.encode = &fieldcallback;
+        
+        COMMENT("Test pb_encode with callback field in a submessage.")
+        TEST(WRITES(pb_encode(&s, CallbackContainer_fields, &msg), "\x0A\x02\x08\x55"))
+        TEST(WRITES(pb_encode(&s, CallbackContainerContainer_fields, &msg2),
+                    "\x0A\x04\x0A\x02\x08\x55"))
+        
+        /* Misbehaving callback: varying output between calls */
+        msg.submsg.data.funcs.encode = &crazyfieldcallback;
+        msg.submsg.data.arg = &state;
+        msg2.submsg.submsg.data.funcs.encode = &crazyfieldcallback;
+        msg2.submsg.submsg.data.arg = &state;
+        
+        TEST(!pb_encode(&s, CallbackContainer_fields, &msg))
+        state = 1;
+        TEST(!pb_encode(&s, CallbackContainerContainer_fields, &msg2))
+    }
+    
+    if (status != 0)
+        fprintf(stdout, "\n\nSome tests FAILED!\n");
+    
+    return status;
+}