Add skeleton tests for receiving and sending ISO-TP messages.

8 files changed, 341 insertions, 52 deletions

diff --git a/Makefile b/Makefile
index 0dd93599..847196ab 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 CC = gcc
 INCLUDES = -Isrc -Ideps/canutil/src
-CFLAGS = $(INCLUDES) -c -w -Wall -Werror -g -ggdb
+CFLAGS = $(INCLUDES) -c -w -Wall -Werror -g -ggdb -std=c99
 LDFLAGS =
 LDLIBS = -lcheck
 
@@ -16,11 +16,13 @@ ifneq ($(OSTYPE),Darwin)
 endif
 
 SRC = $(wildcard src/**/*.c)
-SRC = $(wildcard deps/**/*.c)
+SRC += $(wildcard deps/**/*.c)
 OBJS = $(SRC:.c=.o)
-TEST_SRC = $(wildcard $(TEST_DIR)/*.c)
+TEST_SRC = $(wildcard $(TEST_DIR)/test_*.c)
 TEST_OBJS = $(TEST_SRC:.c=.o)
 TESTS=$(patsubst %.c,%.bin,$(TEST_SRC))
+TEST_SUPPORT_SRC = $(TEST_DIR)/common.c
+TEST_SUPPORT_OBJS = $(TEST_SUPPORT_SRC:.c=.o)
 
 all: $(OBJS)
 
@@ -29,7 +31,7 @@ test: $(TESTS)
 	@export SHELLOPTS
 	@sh runtests.sh $(TEST_DIR)
 
-$(TEST_DIR)/%.bin: $(TEST_DIR)/%.o $(OBJS)
+$(TEST_DIR)/%.bin: $(TEST_DIR)/%.o $(OBJS) $(TEST_SUPPORT_OBJS)
 	@mkdir -p $(dir $@)
 	$(CC) $(LDFLAGS) $(CC_SYMBOLS) $(INCLUDES) -o $@ $^ $(LDLIBS)
 
diff --git a/README.mkd b/README.mkd
index 530ebad5..2371561d 100644
--- a/README.mkd
+++ b/README.mkd
@@ -12,6 +12,8 @@ ISO-TP (ISO 15765-2) Support Library in C
 
 // TODO should handlers take a context? depends on how we want to use this
 
+// TODO add an optional dispatcher to handle multiple open requests
+
 ## Testing
 
 The library includes a test suite that uses the `check` C unit test library.
diff --git a/src/isotp/isotp.c b/src/isotp/isotp.c
index 1b7f398b..da7fa29d 100644
--- a/src/isotp/isotp.c
+++ b/src/isotp/isotp.c
@@ -1,3 +1,9 @@
+#include <isotp/isotp.h>
+
+const uint16_t MAX_ISO_TP_MESSAGE_SIZE = 4096;
+const uint16_t MAX_CAN_FRAME_SIZE = 8;
+const uint8_t ISO_TP_DEFAULT_RESPONSE_TIMEOUT = 100;
+const bool ISO_TP_DEFAULT_FRAME_PADDING_STATUS = true;
 
 void isotp_receive_can_frame(const uint16_t arbitration_id, const uint8_t* data,
         const uint8_t length) {
@@ -10,5 +16,41 @@ bool isotp_send(const uint8_t* payload, uint16_t payload_size) {
      // we determine if it's single/multi frame and start the send
 }
 
-void isotp_set_timeout(uint16_t timeout) {
+void isotp_set_timeout(IsoTpHandler* handler, uint16_t timeout_ms) {
+    handler->timeout_ms = timeout_ms;
+}
+
+IsoTpShims isotp_init_shims(LogShim log, SendCanMessageShim send_can_message,
+        SetTimerShim set_timer) {
+    IsoTpShims shims = {
+        log: log,
+        send_can_message: send_can_message,
+        set_timer: set_timer
+    };
+    return shims;
+}
+
+IsoTpHandler isotp_init(IsoTpShims* shims, uint16_t arbitration_id,
+        IsoTpMessageReceivedHandler message_received_callback,
+        IsoTpMessageSentHandler message_sent_callback,
+        IsoTpCanFrameSentHandler can_frame_sent_callback) {
+    IsoTpHandler handler = {
+        shims: shims,
+        message_received_callback: message_received_callback,
+        message_sent_callback: message_sent_callback,
+        can_frame_sent_callback: can_frame_sent_callback,
+        timeout_ms: ISO_TP_DEFAULT_RESPONSE_TIMEOUT,
+        frame_padding: ISO_TP_DEFAULT_FRAME_PADDING_STATUS,
+        sending: false
+    };
+    return handler;
+}
+
+// TODO this would be better as a "isotp_message_to_string"
+void log_isotp_message(const uint16_t arbitration_id,
+        const uint8_t* payload, const uint16_t size) {
+    debug("ID: 0x%02x, Payload:", arbitration_id);
+    for(int i = 0; i < size; i++) {
+        debug("0x%x", payload[i]);
+    }
 }
diff --git a/src/isotp/isotp.h b/src/isotp/isotp.h
index 923d5926..c500f6e3 100644
--- a/src/isotp/isotp.h
+++ b/src/isotp/isotp.h
@@ -1,50 +1,93 @@
 #ifndef __ISOTP_H__
 #define __ISOTP_H__
 
+#include <stdint.h>
+#include <stdbool.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-struct {
+const uint16_t MAX_ISO_TP_MESSAGE_SIZE;
+const uint16_t MAX_CAN_FRAME_SIZE;
+const uint8_t ISO_TP_DEFAULT_RESPONSE_TIMEOUT;
+const bool ISO_TP_DEFAULT_FRAME_PADDING_STATUS;
+
+typedef void (*LogShim)(const char* message);
+typedef bool (*SendCanMessageShim)(const uint16_t arbitration_id, const uint8_t* data,
+            const uint8_t size);
+typedef bool (*SetTimerShim)(uint16_t time_ms, void (*callback));
+
+typedef void (*IsoTpMessageReceivedHandler)(const uint16_t arbitration_id,
+        const uint8_t* payload, const uint16_t size);
+typedef void (*IsoTpMessageSentHandler)(const bool success,
+        const uint16_t arbitration_id, const uint8_t* payload,
+        const uint16_t size);
+typedef void (*IsoTpCanFrameSentHandler)(const uint16_t arbitration_id,
+        const uint8_t* payload, const uint8_t size);
+
+// TODO this is really necessary and it would leak this library into the user's
+// code
+// typedef struct {
+    // const uint16_t arbitration_id;
+    // const uint8_t* payload;
+    // const uint16_t size;
+// } IsoTpMessage;
+
+typedef struct {
+    LogShim log;
+    SendCanMessageShim send_can_message;
+    SetTimerShim set_timer;
+} IsoTpShims;
+
+typedef struct {
+    IsoTpShims* shims;
     uint16_t arb_id;
-    void* message_received_callback;
-    void* message_sent_callback;
-    void* can_frame_sent_callback;
+    IsoTpMessageReceivedHandler message_received_callback;
+    IsoTpMessageSentHandler message_sent_callback;
+    IsoTpCanFrameSentHandler can_frame_sent_callback;
 
     // Private
     uint16_t timeout_ms;
-    bool framePadding;
+    bool frame_padding;
     uint8_t* receive_buffer;
     uint16_t received_buffer_size;
     uint16_t incoming_message_size;
     bool sending;
-    // TODO timer
+    // TODO timer callback
 } IsoTpHandler;
 
-enum {
+typedef enum {
     PCI_SINGLE,
     PCI_FIRST_FRAME,
     PCI_CONSECUTIVE_FRAME,
     PCI_FLOW_CONTROL_FRAME
 } IsoTpProtocolControlInformation;
 
-enum {
+typedef enum {
     PCI_FLOW_STATUS_CONTINUE,
     PCI_FLOW_STATUS_WAIT,
     PCI_FLOW_STATUS_OVERFLOW
 } IsoTpFlowStatus;
 
-const uint16_t MAX_ISO_TP_MESSAGE_SIZE = 4096;
-const uint16_t MAX_CAN_FRAME_SIZE = 8;
-const uint8_t ISO_TP_DEFAULT_RESPONSE_TIMEOUT = 100;
-const bool ISO_TP_DEFAULT_FRAME_PADDING_STATUS = true;
+IsoTpShims isotp_init_shims(LogShim log,
+        SendCanMessageShim send_can_message,
+        SetTimerShim set_timer);
 
-IsoTpHandler isotp_init(uint16_t arbitration_id,
-        IsoTpMessageReceivedHandler* message_received_callback,
-        IsoTpMessageSentHandler* message_sent_callback,
-        IsoTpCanFrameSentHandler* can_frame_sent_callback);
+IsoTpHandler isotp_init(IsoTpShims* shims,
+        uint16_t arbitration_id,
+        IsoTpMessageReceivedHandler message_received_callback,
+        IsoTpMessageSentHandler message_sent_callback,
+        IsoTpCanFrameSentHandler can_frame_sent_callback);
 
-void isotp_set_timeout(uint16_t timeout);
+/* Public: Change the timeout for waiting on an ISO-TP response frame.
+ *
+ * If this function is not used, the conventional 100ms is used by default.
+ *
+ * handler - the ISO-TP handler to modify.
+ * timeout - the new timeout in milliseconds.
+ */
+void isotp_set_timeout(IsoTpHandler* handler, uint16_t timeout_ms);
 
 // TODO we have to make sure to copy the payload internall if it's more than 1
 // frame, the soure could go out of scope
@@ -55,6 +98,10 @@ void isotp_receive_can_frame(const uint16_t arbitration_id, const uint8_t* data,
 
 void isotp_destroy(IsoTpHandler* handler);
 
+void log_isotp_message(const uint16_t arbitration_id, const uint8_t* payload,
+        const uint16_t size);
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/tests/common.c b/tests/common.c
new file mode 100644
index 00000000..fb26c4af
--- /dev/null
+++ b/tests/common.c
@@ -0,0 +1,86 @@
+#include <isotp/isotp.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+IsoTpShims SHIMS;
+IsoTpHandler ISOTP_HANDLER;
+
+uint16_t last_can_frame_sent_arb_id;
+uint8_t last_can_payload_sent;
+uint8_t last_can_payload_size;
+bool can_frame_was_sent;
+
+bool message_was_received;
+uint16_t last_message_received_arb_id;
+uint8_t* last_message_received_payload;
+uint8_t last_message_received_payload_size;
+
+uint16_t last_message_sent_arb_id;
+bool last_message_sent_status;
+uint8_t* last_message_sent_payload;
+uint8_t last_message_sent_payload_size;
+
+void debug(const char* format, ...) {
+    va_list args;
+    va_start(args, format);
+    vprintf(format, args);
+    va_end(args);
+}
+
+void mock_send_can(const uint16_t arbitration_id, const uint8_t* data,
+        const uint8_t size) {
+}
+
+void mock_set_timer(uint16_t time_ms, void (*callback)) {
+}
+
+void message_received(const uint16_t arbitration_id, const uint8_t* payload,
+        const uint16_t size) {
+    debug("Received ISO-TP message:");
+    log_isotp_message(arbitration_id, payload, size);
+    last_message_received_arb_id = arbitration_id;
+    last_message_received_payload_size = size;
+    memcpy(last_message_received_payload, payload, size);
+}
+
+void message_sent(const bool success, const uint16_t arbitration_id,
+        const uint8_t* payload, const uint16_t size) {
+    if(success) {
+        debug("Sent ISO-TP message:");
+    } else {
+        debug("Unable to send ISO-TP message:");
+    }
+    log_isotp_message(arbitration_id, payload, size);
+
+    message_was_received = true;
+    last_message_sent_arb_id = arbitration_id;
+    last_message_sent_payload_size = size;
+    memcpy(last_message_sent_payload, payload, size);
+}
+
+void can_frame_sent(const uint16_t arbitration_id,
+        const uint8_t* payload, const uint8_t size) {
+    debug("Sent CAN Frame:");
+    log_isotp_message(arbitration_id, payload, size);
+    for(int i = 0; i < size; i++) {
+        debug("0x%x", payload[i]);
+    }
+
+    can_frame_was_sent = true;
+    last_can_frame_sent_arb_id = arbitration_id;
+    last_can_payload_sent = size;
+    memcpy(last_can_payload_sent, payload, size);
+}
+
+void setup() {
+    SHIMS = isotp_init_shims(debug, mock_send_can, mock_set_timer);
+    ISOTP_HANDLER = isotp_init(&SHIMS, 0x2a, message_received, message_sent,
+            can_frame_sent);
+    last_message_received_payload = malloc(MAX_ISO_TP_MESSAGE_SIZE);
+    last_message_sent_status = false;
+    message_was_received = false;
+    can_frame_was_sent = false;
+}
+
diff --git a/tests/test_receive.c b/tests/test_receive.c
new file mode 100644
index 00000000..4134cfd6
--- /dev/null
+++ b/tests/test_receive.c
@@ -0,0 +1,79 @@
+#include <isotp/isotp.h>
+#include <check.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+extern IsoTpShims SHIMS;
+extern IsoTpHandler ISOTP_HANDLER;
+
+extern uint16_t last_can_frame_sent_arb_id;
+extern uint8_t last_can_payload_sent;
+extern uint8_t last_can_payload_size;
+extern bool can_frame_was_sent;
+
+extern bool message_was_received;
+extern uint16_t last_message_received_arb_id;
+extern uint8_t* last_message_received_payload;
+extern uint8_t last_message_received_payload_size;
+
+extern uint16_t last_message_sent_arb_id;
+extern bool last_message_sent_status;
+extern uint8_t* last_message_sent_payload;
+extern uint8_t last_message_sent_payload_size;
+
+extern void setup();
+
+START_TEST (test_receive_wrong_id)
+{
+    const uint8_t data[8] = {0};
+    isotp_receive_can_frame(0x100, data, sizeof(data));
+    fail_if(message_was_received);
+}
+END_TEST
+
+START_TEST (test_receive_bad_pci)
+{
+    // 4 is a reserved number for the PCI field - only 0-3 are allowed
+    const uint8_t data[8] = {0x40};
+    isotp_receive_can_frame(0x2a, data, sizeof(data));
+    fail_if(message_was_received);
+}
+END_TEST
+
+START_TEST (test_receive_single_frame)
+{
+    const uint8_t data[8] = {0x0, 0x12, 0x34};
+    isotp_receive_can_frame(0x2a, data, sizeof(data));
+    fail_unless(message_was_received);
+    ck_assert_int_eq(last_message_received_arb_id, 0x2a);
+    ck_assert_int_eq(last_message_received_payload_size, 2);
+    ck_assert_int_eq(last_message_received_payload[0], 0x12);
+    ck_assert_int_eq(last_message_received_payload[0], 0x34);
+}
+END_TEST
+
+Suite* testSuite(void) {
+    Suite* s = suite_create("iso15765");
+    TCase *tc_core = tcase_create("receive");
+    tcase_add_checked_fixture(tc_core, setup, NULL);
+    tcase_add_test(tc_core, test_receive_wrong_id);
+    tcase_add_test(tc_core, test_receive_bad_pci);
+    tcase_add_test(tc_core, test_receive_single_frame);
+    suite_add_tcase(s, tc_core);
+
+    return s;
+}
+
+int main(void) {
+    int numberFailed;
+    Suite* s = testSuite();
+    SRunner *sr = srunner_create(s);
+    // Don't fork so we can actually use gdb
+    srunner_set_fork_status(sr, CK_NOFORK);
+    srunner_run_all(sr, CK_NORMAL);
+    numberFailed = srunner_ntests_failed(sr);
+    srunner_free(sr);
+    return (numberFailed == 0) ? 0 : 1;
+}
diff --git a/tests/test_send.c b/tests/test_send.c
new file mode 100644
index 00000000..144e040f
--- /dev/null
+++ b/tests/test_send.c
@@ -0,0 +1,61 @@
+#include <isotp/isotp.h>
+#include <check.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+extern IsoTpShims SHIMS;
+extern IsoTpHandler ISOTP_HANDLER;
+
+extern uint16_t last_can_frame_sent_arb_id;
+extern uint8_t last_can_payload_sent;
+extern uint8_t last_can_payload_size;
+extern bool can_frame_was_sent;
+
+extern bool message_was_received;
+extern uint16_t last_message_received_arb_id;
+extern uint8_t* last_message_received_payload;
+extern uint8_t last_message_received_payload_size;
+
+extern uint16_t last_message_sent_arb_id;
+extern bool last_message_sent_status;
+extern uint8_t* last_message_sent_payload;
+extern uint8_t last_message_sent_payload_size;
+
+extern void setup();
+
+START_TEST (test_send_single_frame)
+{
+    fail_if(true);
+}
+END_TEST
+
+START_TEST (test_send_multi_frame)
+{
+    fail_if(true);
+}
+END_TEST
+
+Suite* testSuite(void) {
+    Suite* s = suite_create("iso15765");
+    TCase *tc_core = tcase_create("send");
+    tcase_add_checked_fixture(tc_core, setup, NULL);
+    tcase_add_test(tc_core, test_send_single_frame);
+    tcase_add_test(tc_core, test_send_multi_frame);
+    suite_add_tcase(s, tc_core);
+
+    return s;
+}
+
+int main(void) {
+    int numberFailed;
+    Suite* s = testSuite();
+    SRunner *sr = srunner_create(s);
+    // Don't fork so we can actually use gdb
+    srunner_set_fork_status(sr, CK_NOFORK);
+    srunner_run_all(sr, CK_NORMAL);
+    numberFailed = srunner_ntests_failed(sr);
+    srunner_free(sr);
+    return (numberFailed == 0) ? 0 : 1;
+}
diff --git a/tests/tests.c b/tests/tests.c
deleted file mode 100644
index 62b3df8d..00000000
--- a/tests/tests.c
+++ /dev/null
@@ -1,30 +0,0 @@
-#include <check.h>
-#include <stdint.h>
-#include <bitfield/bitfield.h>
-
-START_TEST (test_fail)
-{
-    fail_if(true);
-}
-END_TEST
-
-Suite* bitfieldSuite(void) {
-    Suite* s = suite_create("iso15765");
-    TCase *tc_core = tcase_create("core");
-    tcase_add_test(tc_core, test_fail);
-    suite_add_tcase(s, tc_core);
-
-    return s;
-}
-
-int main(void) {
-    int numberFailed;
-    Suite* s = bitfieldSuite();
-    SRunner *sr = srunner_create(s);
-    // Don't fork so we can actually use gdb
-    srunner_set_fork_status(sr, CK_NOFORK);
-    srunner_run_all(sr, CK_NORMAL);
-    numberFailed = srunner_ntests_failed(sr);
-    srunner_free(sr);
-    return (numberFailed == 0) ? 0 : 1;
-}