ir: add tests for event class attributes
[babeltrace.git] / tests / lib / test_ctf_writer.c
index 1194c20d4bba809cbfc7dab1be19a5dcc12940c4..e6120d2242e8adf7d47798d3db9c1ea3c480d6db 100644 (file)
@@ -28,6 +28,7 @@
 #include <babeltrace/ctf-writer/event-fields.h>
 #include <babeltrace/ctf-ir/stream-class.h>
 #include <babeltrace/ctf/events.h>
+#include <babeltrace/objects.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -454,8 +455,30 @@ void append_simple_event(struct bt_ctf_stream_class *stream_class,
                "integer_field");
        bt_ctf_event_class_add_field(simple_event_class, float_type,
                "float_field");
-       bt_ctf_stream_class_add_event_class(stream_class,
-               simple_event_class);
+
+       assert(!bt_ctf_event_class_set_id(simple_event_class, 13));
+
+       /* Set an event context type which will contain a single integer*/
+       ok(!bt_ctf_field_type_structure_add_field(event_context_type, uint_12_type,
+               "event_specific_context"),
+               "Add event specific context field");
+       ok(bt_ctf_event_class_get_context_type(NULL) == NULL,
+               "bt_ctf_event_class_get_context_type handles NULL correctly");
+       ok(bt_ctf_event_class_get_context_type(simple_event_class) == NULL,
+               "bt_ctf_event_class_get_context_type returns NULL when no event context type is set");
+
+       ok(bt_ctf_event_class_set_context_type(simple_event_class, NULL) < 0,
+               "bt_ctf_event_class_set_context_type handles a NULL context type correctly");
+       ok(bt_ctf_event_class_set_context_type(NULL, event_context_type) < 0,
+               "bt_ctf_event_class_set_context_type handles a NULL event class correctly");
+       ok(!bt_ctf_event_class_set_context_type(simple_event_class, event_context_type),
+               "Set an event class' context type successfully");
+       returned_type = bt_ctf_event_class_get_context_type(simple_event_class);
+       ok(returned_type == event_context_type,
+               "bt_ctf_event_class_get_context_type returns the appropriate type");
+       bt_ctf_field_type_put(returned_type);
+
+       bt_ctf_stream_class_add_event_class(stream_class, simple_event_class);
 
        ok(bt_ctf_stream_class_get_event_class_count(NULL) < 0,
                "bt_ctf_stream_class_get_event_class_count handles NULL correctly");
@@ -469,6 +492,15 @@ void append_simple_event(struct bt_ctf_stream_class *stream_class,
        ok(ret_event_class == simple_event_class,
                "bt_ctf_stream_class_get_event_class returns the correct event class");
        bt_ctf_event_class_put(ret_event_class);
+       ok(!bt_ctf_stream_class_get_event_class_by_id(NULL, 0),
+               "bt_ctf_stream_class_get_event_class_by_id handles NULL correctly");
+       ok(!bt_ctf_stream_class_get_event_class_by_id(stream_class, 2),
+               "bt_ctf_stream_class_get_event_class_by_id returns NULL when the requested ID doesn't exist");
+       ret_event_class =
+               bt_ctf_stream_class_get_event_class_by_id(stream_class, 13);
+       ok(ret_event_class == simple_event_class,
+               "bt_ctf_stream_class_get_event_class_by_id returns a correct event class");
+       bt_ctf_event_class_put(ret_event_class);
 
        ok(bt_ctf_stream_class_get_event_class_by_name(NULL, "some event name") == NULL,
                "bt_ctf_stream_class_get_event_class_by_name handles a NULL stream class correctly");
@@ -481,25 +513,6 @@ void append_simple_event(struct bt_ctf_stream_class *stream_class,
                "bt_ctf_stream_class_get_event_class_by_name returns a correct event class");
        bt_ctf_event_class_put(ret_event_class);
 
-       /* Set an event context type which will contain a single integer*/
-       ok(!bt_ctf_field_type_structure_add_field(event_context_type, uint_12_type,
-               "event_specific_context"),
-               "Add event specific context field");
-       ok(bt_ctf_event_class_get_context_type(NULL) == NULL,
-               "bt_ctf_event_class_get_context_type handles NULL correctly");
-       ok(bt_ctf_event_class_get_context_type(simple_event_class) == NULL,
-               "bt_ctf_event_class_get_context_type returns NULL when no event context type is set");
-       ok(bt_ctf_event_class_set_context_type(simple_event_class, NULL) < 0,
-               "bt_ctf_event_class_set_context_type handles a NULL context type correctly");
-       ok(bt_ctf_event_class_set_context_type(NULL, event_context_type) < 0,
-               "bt_ctf_event_class_set_context_type handles a NULL event class correctly");
-       ok(!bt_ctf_event_class_set_context_type(simple_event_class, event_context_type),
-               "Set an event class' context type successfully");
-       returned_type = bt_ctf_event_class_get_context_type(simple_event_class);
-       ok(returned_type == event_context_type,
-               "bt_ctf_event_class_get_context_type returns the appropriate type");
-       bt_ctf_field_type_put(returned_type);
-
        simple_event = bt_ctf_event_create(simple_event_class);
        ok(simple_event,
                "Instantiate an event containing a single integer field");
@@ -641,7 +654,18 @@ void append_simple_event(struct bt_ctf_stream_class *stream_class,
 void append_complex_event(struct bt_ctf_stream_class *stream_class,
                struct bt_ctf_stream *stream, struct bt_ctf_clock *clock)
 {
+       struct event_class_attrs_counts {
+               int id;
+               int name;
+               int loglevel;
+               int modelemfuri;
+               int unknown;
+       } attrs_count;
+
        int i;
+       int ret;
+       int64_t int64_value;
+       struct event_class_attrs_counts ;
        const char *complex_test_event_string = "Complex Test Event";
        const char *test_string = "Test string";
        struct bt_ctf_field_type *uint_35_type =
@@ -676,6 +700,7 @@ void append_complex_event(struct bt_ctf_stream_class *stream_class,
        struct bt_ctf_stream_class *ret_stream_class;
        struct bt_ctf_event_class *ret_event_class;
        struct bt_ctf_field *packet_context, *packet_context_field;
+       struct bt_object *obj;
 
        bt_ctf_field_type_set_alignment(int_16_type, 32);
        bt_ctf_field_type_integer_set_signed(int_16_type, 1);
@@ -829,6 +854,112 @@ void append_complex_event(struct bt_ctf_stream_class *stream_class,
        ok(bt_ctf_event_class_get_id(event_class) == 42,
                "bt_ctf_event_class_get_id returns the correct value");
 
+       /* Test event class attributes */
+       assert(obj = bt_object_integer_create_init(15));
+       ok(bt_ctf_event_class_set_attribute(NULL, "id", obj),
+               "bt_ctf_event_class_set_attribute handles a NULL event class correctly");
+       ok(bt_ctf_event_class_set_attribute(event_class, NULL, obj),
+               "bt_ctf_event_class_set_attribute handles a NULL name correctly");
+       ok(bt_ctf_event_class_set_attribute(event_class, "id", NULL),
+               "bt_ctf_event_class_set_attribute handles a NULL value correctly");
+       assert(!bt_object_integer_set(obj, -3));
+       ok(bt_ctf_event_class_set_attribute(event_class, "id", obj),
+               "bt_ctf_event_class_set_attribute fails with a negative \"id\" attribute");
+       assert(!bt_object_integer_set(obj, 11));
+       ret = bt_ctf_event_class_set_attribute(event_class, "id", obj);
+       ok(!ret && bt_ctf_event_class_get_id(event_class) == 11,
+               "bt_ctf_event_class_set_attribute succeeds in replacing the existing \"id\" attribute");
+       ret = bt_ctf_event_class_set_attribute(event_class, "name", obj);
+       ret &= bt_ctf_event_class_set_attribute(event_class, "model.emf.uri", obj);
+       ok(ret,
+               "bt_ctf_event_class_set_attribute cannot set \"name\" or \"model.emf.uri\" to an integer value");
+       BT_OBJECT_PUT(obj);
+
+       assert(obj = bt_object_integer_create_init(5));
+       ok(!bt_ctf_event_class_set_attribute(event_class, "loglevel", obj),
+               "bt_ctf_event_class_set_attribute succeeds in setting the \"loglevel\" attribute");
+       BT_OBJECT_PUT(obj);
+       ok(!bt_ctf_event_class_get_attribute_value_by_name(NULL, "loglevel"),
+               "bt_ctf_event_class_get_attribute_value_by_name handles a NULL event class correctly");
+       ok(!bt_ctf_event_class_get_attribute_value_by_name(event_class, NULL),
+               "bt_ctf_event_class_get_attribute_value_by_name handles a NULL name correctly");
+       ok(!bt_ctf_event_class_get_attribute_value_by_name(event_class, "meow"),
+               "bt_ctf_event_class_get_attribute_value_by_name fails with a non-existing attribute name");
+       obj = bt_ctf_event_class_get_attribute_value_by_name(event_class,
+               "loglevel");
+       int64_value = 0;
+       ret = bt_object_integer_get(obj, &int64_value);
+       ok(obj && !ret && int64_value == 5,
+               "bt_ctf_event_class_get_attribute_value_by_name returns the correct value");
+       BT_OBJECT_PUT(obj);
+
+       assert(obj = bt_object_string_create_init("nu name"));
+       assert(!bt_ctf_event_class_set_attribute(event_class, "name", obj));
+       ret_string = bt_ctf_event_class_get_name(event_class);
+       ok(!strcmp(ret_string, "nu name"),
+               "bt_ctf_event_class_set_attribute succeeds in replacing the existing \"name\" attribute");
+       ret = bt_ctf_event_class_set_attribute(event_class, "id", obj);
+       ret &= bt_ctf_event_class_set_attribute(event_class, "loglevel", obj);
+       ok(ret,
+               "bt_ctf_event_class_set_attribute cannot set \"id\" or \"loglevel\" to a string value");
+       BT_OBJECT_PUT(obj);
+       assert(obj = bt_object_string_create_init("http://kernel.org/"));
+       assert(!bt_ctf_event_class_set_attribute(event_class, "model.emf.uri", obj));
+       BT_OBJECT_PUT(obj);
+
+       ok(bt_ctf_event_class_get_attribute_count(NULL),
+               "bt_ctf_event_class_get_attribute_count handles a NULL event class");
+       ok(bt_ctf_event_class_get_attribute_count(event_class) == 4,
+               "bt_ctf_event_class_get_attribute_count returns the correct count");
+       ok(!bt_ctf_event_class_get_attribute_name(NULL, 0),
+               "bt_ctf_event_class_get_attribute_name handles a NULL event class correctly");
+       ok(!bt_ctf_event_class_get_attribute_name(event_class, 4),
+               "bt_ctf_event_class_get_attribute_name handles a too large index correctly");
+       ok(!bt_ctf_event_class_get_attribute_value(NULL, 0),
+               "bt_ctf_event_class_get_attribute_value handles a NULL event class correctly");
+       ok(!bt_ctf_event_class_get_attribute_value(event_class, 4),
+               "bt_ctf_event_class_get_attribute_value handles a too large index correctly");
+
+       memset(&attrs_count, 0, sizeof(attrs_count));
+
+       for (i = 0; i < 4; ++i) {
+               ret_string = bt_ctf_event_class_get_attribute_name(event_class,
+                       i);
+               obj = bt_ctf_event_class_get_attribute_value(event_class, i);
+               assert(ret_string && obj);
+
+               if (!strcmp(ret_string, "id")) {
+                       attrs_count.id++;
+                       ok(bt_object_is_integer(obj),
+                               "bt_ctf_event_class_get_attribute_value returns the correct type (\"%s\")",
+                               ret_string);
+               } else if (!strcmp(ret_string, "name")) {
+                       attrs_count.name++;
+                       ok(bt_object_is_string(obj),
+                               "bt_ctf_event_class_get_attribute_value returns the correct type (\"%s\")",
+                               ret_string);
+               } else if (!strcmp(ret_string, "loglevel")) {
+                       attrs_count.loglevel++;
+                       ok(bt_object_is_integer(obj),
+                               "bt_ctf_event_class_get_attribute_value returns the correct type (\"%s\")",
+                               ret_string);
+               } else if (!strcmp(ret_string, "model.emf.uri")) {
+                       attrs_count.modelemfuri++;
+                       ok(bt_object_is_string(obj),
+                               "bt_ctf_event_class_get_attribute_value returns the correct type (\"%s\")",
+                               ret_string);
+               } else {
+                       attrs_count.unknown++;
+               }
+
+               BT_OBJECT_PUT(obj);
+       }
+
+       ok(attrs_count.unknown == 0, "event class has no unknown attributes");
+       ok(attrs_count.id == 1 && attrs_count.name == 1 &&
+               attrs_count.loglevel == 1 && attrs_count.modelemfuri == 1,
+               "event class has one instance of each known attribute");
+
        /* Add event class to the stream class */
        ok(bt_ctf_stream_class_add_event_class(stream_class, NULL),
                "Reject addition of NULL event class to a stream class");
@@ -1485,7 +1616,6 @@ void test_empty_stream(struct bt_ctf_writer *writer)
 {
        int ret = 0;
        struct bt_ctf_trace *trace = NULL;
-       struct bt_ctf_clock *clock = NULL;
        struct bt_ctf_stream_class *stream_class = NULL;
        struct bt_ctf_stream *stream = NULL;
 
@@ -1513,11 +1643,115 @@ end:
        ok(ret == 0,
                "Created a stream class with default attributes and an empty stream");
        bt_ctf_trace_put(trace);
-       bt_ctf_clock_put(clock);
        bt_ctf_stream_put(stream);
        bt_ctf_stream_class_put(stream_class);
 }
 
+void test_instanciate_event_before_stream(struct bt_ctf_writer *writer)
+{
+       int ret = 0;
+       struct bt_ctf_trace *trace = NULL;
+       struct bt_ctf_clock *clock = NULL;
+       struct bt_ctf_stream_class *stream_class = NULL;
+       struct bt_ctf_stream *stream = NULL;
+       struct bt_ctf_event_class *event_class = NULL;
+       struct bt_ctf_event *event = NULL;
+       struct bt_ctf_field_type *integer_type = NULL;
+       struct bt_ctf_field *integer = NULL;
+
+       trace = bt_ctf_writer_get_trace(writer);
+       if (!trace) {
+               diag("Failed to get trace from writer");
+               ret = -1;
+               goto end;
+       }
+
+       clock = bt_ctf_trace_get_clock(trace, 0);
+       if (!clock) {
+               diag("Failed to get clock from trace");
+               ret = -1;
+               goto end;
+       }
+
+       stream_class = bt_ctf_stream_class_create("event_before_stream_test");
+       if (!stream_class) {
+               diag("Failed to create stream class");
+               ret = -1;
+               goto end;
+       }
+
+       ret = bt_ctf_stream_class_set_clock(stream_class, clock);
+       if (ret) {
+               diag("Failed to set stream class clock");
+               goto end;
+       }
+
+       event_class = bt_ctf_event_class_create("some_event_class_name");
+       integer_type = bt_ctf_field_type_integer_create(32);
+       if (!integer_type) {
+               diag("Failed to create integer field type");
+               ret = -1;
+               goto end;
+       }
+
+       ret = bt_ctf_event_class_add_field(event_class, integer_type,
+               "integer_field");
+       if (ret) {
+               diag("Failed to add field to event class");
+               goto end;
+       }
+
+       ret = bt_ctf_stream_class_add_event_class(stream_class,
+               event_class);
+       if (ret) {
+               diag("Failed to add event class to stream class");
+       }
+
+       event = bt_ctf_event_create(event_class);
+       if (!event) {
+               diag("Failed to create event");
+               ret = -1;
+               goto end;
+       }
+
+       integer = bt_ctf_event_get_payload_by_index(event, 0);
+       if (!integer) {
+               diag("Failed to get integer field payload from event");
+               ret = -1;
+               goto end;
+       }
+
+       ret = bt_ctf_field_unsigned_integer_set_value(integer, 1234);
+       if (ret) {
+               diag("Failed to set integer field value");
+               goto end;
+       }
+
+       stream = bt_ctf_writer_create_stream(writer, stream_class);
+       if (!stream) {
+               diag("Failed to create writer stream");
+               ret = -1;
+               goto end;
+       }
+
+       ret = bt_ctf_stream_append_event(stream, event);
+       if (ret) {
+               diag("Failed to append event to stream");
+               goto end;
+       }
+end:
+       ok(ret == 0,
+               "Create an event before instanciating its associated stream");
+       bt_ctf_trace_put(trace);
+       bt_ctf_stream_put(stream);
+       bt_ctf_stream_class_put(stream_class);
+       bt_ctf_event_class_put(event_class);
+       bt_ctf_event_put(event);
+       bt_ctf_field_type_put(integer_type);
+       bt_ctf_field_put(integer);
+       bt_ctf_clock_put(clock);
+}
+
 int main(int argc, char **argv)
 {
        char trace_path[] = "/tmp/ctfwriter_XXXXXX";
@@ -1552,6 +1786,8 @@ int main(int argc, char **argv)
        struct bt_ctf_field *packet_header, *packet_header_field;
        struct bt_ctf_trace *trace;
        int ret;
+       int64_t ret_int64_t;
+       struct bt_object *obj;
 
        if (argc < 3) {
                printf("Usage: tests-ctf-writer path_to_ctf_parser_test path_to_babeltrace\n");
@@ -1570,6 +1806,16 @@ int main(int argc, char **argv)
        writer = bt_ctf_writer_create(trace_path);
        ok(writer, "bt_ctf_create succeeds in creating trace with path");
 
+       ok(!bt_ctf_writer_get_trace(NULL),
+               "bt_ctf_writer_get_trace correctly handles NULL");
+       trace = bt_ctf_writer_get_trace(writer);
+       ok(trace,
+               "bt_ctf_writer_get_trace returns a bt_ctf_trace object");
+       ok(bt_ctf_trace_set_byte_order(trace, BT_CTF_BYTE_ORDER_BIG_ENDIAN) == 0,
+               "Set a trace's byte order to big endian");
+       ok(bt_ctf_trace_get_byte_order(trace) == BT_CTF_BYTE_ORDER_BIG_ENDIAN,
+               "bt_ctf_trace_get_byte_order returns a correct endianness");
+
        /* Add environment context to the trace */
        ret = gethostname(hostname, sizeof(hostname));
        if (ret < 0) {
@@ -1588,6 +1834,123 @@ int main(int argc, char **argv)
                NULL),
                "bt_ctf_writer_add_environment_field error with NULL field value");
 
+       /* Test bt_ctf_trace_set_environment_field with an integer object */
+       obj = bt_object_integer_create_init(23);
+       assert(obj);
+       ok(bt_ctf_trace_set_environment_field(NULL, "test_env_int_obj", obj),
+               "bt_ctf_trace_set_environment_field handles a NULL trace correctly");
+       ok(bt_ctf_trace_set_environment_field(trace, NULL, obj),
+               "bt_ctf_trace_set_environment_field handles a NULL name correctly");
+       ok(bt_ctf_trace_set_environment_field(trace, "test_env_int_obj", NULL),
+               "bt_ctf_trace_set_environment_field handles a NULL value correctly");
+       ok(!bt_ctf_trace_set_environment_field(trace, "test_env_int_obj", obj),
+               "bt_ctf_trace_set_environment_field succeeds in adding an integer object");
+       BT_OBJECT_PUT(obj);
+
+       /* Test bt_ctf_trace_set_environment_field with a string object */
+       obj = bt_object_string_create_init("the value");
+       assert(obj);
+       ok(!bt_ctf_trace_set_environment_field(trace, "test_env_str_obj", obj),
+               "bt_ctf_trace_set_environment_field succeeds in adding a string object");
+       BT_OBJECT_PUT(obj);
+
+       /* Test bt_ctf_trace_set_environment_field_integer */
+       ok(bt_ctf_trace_set_environment_field_integer(NULL, "test_env_int",
+               -194875),
+               "bt_ctf_trace_set_environment_field_integer handles a NULL trace correctly");
+       ok(bt_ctf_trace_set_environment_field_integer(trace, NULL, -194875),
+               "bt_ctf_trace_set_environment_field_integer handles a NULL name correctly");
+       ok(!bt_ctf_trace_set_environment_field_integer(trace, "test_env_int",
+               -164973),
+               "bt_ctf_trace_set_environment_field_integer succeeds");
+
+       /* Test bt_ctf_trace_set_environment_field_string */
+       ok(bt_ctf_trace_set_environment_field_string(NULL, "test_env_str",
+               "yeah"),
+               "bt_ctf_trace_set_environment_field_string handles a NULL trace correctly");
+       ok(bt_ctf_trace_set_environment_field_string(trace, NULL, "yeah"),
+               "bt_ctf_trace_set_environment_field_string handles a NULL name correctly");
+       ok(bt_ctf_trace_set_environment_field_string(trace, "test_env_str",
+               NULL),
+               "bt_ctf_trace_set_environment_field_string handles a NULL value correctly");
+       ok(!bt_ctf_trace_set_environment_field_string(trace, "test_env_str",
+               "oh yeah"),
+               "bt_ctf_trace_set_environment_field_string succeeds");
+
+       /* Test bt_ctf_trace_get_environment_field_count */
+       ok(bt_ctf_trace_get_environment_field_count(NULL) < 0,
+               "bt_ctf_trace_get_environment_field_count handles a NULL trace correctly");
+       ok(bt_ctf_trace_get_environment_field_count(trace) == 5,
+               "bt_ctf_trace_get_environment_field_count returns a correct number of environment fields");
+
+       /* Test bt_ctf_trace_get_environment_field_name */
+       ok(bt_ctf_trace_get_environment_field_name(NULL, 0) == NULL,
+               "bt_ctf_trace_get_environment_field_name handles a NULL trace correctly");
+       ok(bt_ctf_trace_get_environment_field_name(trace, -1) == NULL,
+               "bt_ctf_trace_get_environment_field_name handles an invalid index correctly (negative)");
+       ok(bt_ctf_trace_get_environment_field_name(trace, 5) == NULL,
+               "bt_ctf_trace_get_environment_field_name handles an invalid index correctly (too large)");
+       ret_string = bt_ctf_trace_get_environment_field_name(trace, 0);
+       ok(ret_string && !strcmp(ret_string, "host"),
+               "bt_ctf_trace_get_environment_field_name returns a correct field name");
+       ret_string = bt_ctf_trace_get_environment_field_name(trace, 1);
+       ok(ret_string && !strcmp(ret_string, "test_env_int_obj"),
+               "bt_ctf_trace_get_environment_field_name returns a correct field name");
+       ret_string = bt_ctf_trace_get_environment_field_name(trace, 2);
+       ok(ret_string && !strcmp(ret_string, "test_env_str_obj"),
+               "bt_ctf_trace_get_environment_field_name returns a correct field name");
+       ret_string = bt_ctf_trace_get_environment_field_name(trace, 3);
+       ok(ret_string && !strcmp(ret_string, "test_env_int"),
+               "bt_ctf_trace_get_environment_field_name returns a correct field name");
+       ret_string = bt_ctf_trace_get_environment_field_name(trace, 4);
+       ok(ret_string && !strcmp(ret_string, "test_env_str"),
+               "bt_ctf_trace_get_environment_field_name returns a correct field name");
+
+       /* Test bt_ctf_trace_get_environment_field_value */
+       ok(bt_ctf_trace_get_environment_field_value(NULL, 0) == NULL,
+               "bt_ctf_trace_get_environment_field_value handles a NULL trace correctly");
+       ok(bt_ctf_trace_get_environment_field_value(trace, -1) == NULL,
+               "bt_ctf_trace_get_environment_field_value handles an invalid index correctly (negative)");
+       ok(bt_ctf_trace_get_environment_field_value(trace, 5) == NULL,
+               "bt_ctf_trace_get_environment_field_value handles an invalid index correctly (too large)");
+       obj = bt_ctf_trace_get_environment_field_value(trace, 1);
+       ret = bt_object_integer_get(obj, &ret_int64_t);
+       ok(!ret && ret_int64_t == 23,
+               "bt_ctf_trace_get_environment_field_value succeeds in getting an integer value");
+       BT_OBJECT_PUT(obj);
+       obj = bt_ctf_trace_get_environment_field_value(trace, 2);
+       ret = bt_object_string_get(obj, &ret_string);
+       ok(!ret && ret_string && !strcmp(ret_string, "the value"),
+               "bt_ctf_trace_get_environment_field_value succeeds in getting a string value");
+       BT_OBJECT_PUT(obj);
+
+       /* Test bt_ctf_trace_get_environment_field_value_by_name */
+       ok(!bt_ctf_trace_get_environment_field_value_by_name(NULL,
+               "test_env_str"),
+               "bt_ctf_trace_get_environment_field_value_by_name handles a NULL trace correctly");
+       ok(!bt_ctf_trace_get_environment_field_value_by_name(trace, NULL),
+               "bt_ctf_trace_get_environment_field_value_by_name handles a NULL name correctly");
+       ok(!bt_ctf_trace_get_environment_field_value_by_name(trace, "oh oh"),
+               "bt_ctf_trace_get_environment_field_value_by_name returns NULL or an unknown field name");
+       obj = bt_ctf_trace_get_environment_field_value_by_name(trace,
+               "test_env_str");
+       ret = bt_object_string_get(obj, &ret_string);
+       ok(!ret && ret_string && !strcmp(ret_string, "oh yeah"),
+               "bt_ctf_trace_get_environment_field_value_by_name succeeds in getting an existing field");
+       BT_OBJECT_PUT(obj);
+
+       /* Test environment field replacement */
+       ok(!bt_ctf_trace_set_environment_field_integer(trace, "test_env_int",
+               654321),
+               "bt_ctf_trace_set_environment_field_integer succeeds with an existing name");
+       ok(bt_ctf_trace_get_environment_field_count(trace) == 5,
+               "bt_ctf_trace_set_environment_field_integer with an existing key does not increase the environment size");
+       obj = bt_ctf_trace_get_environment_field_value(trace, 3);
+       ret = bt_object_integer_get(obj, &ret_int64_t);
+       ok(!ret && ret_int64_t == 654321,
+               "bt_ctf_trace_get_environment_field_value successfully replaces an existing field");
+       BT_OBJECT_PUT(obj);
+
        if (uname(&name)) {
                perror("uname");
                return -1;
@@ -1679,11 +2042,6 @@ int main(int argc, char **argv)
        ok(bt_ctf_writer_add_clock(writer, clock),
                "Verify a clock can't be added twice to a writer instance");
 
-       ok(!bt_ctf_writer_get_trace(NULL),
-               "bt_ctf_writer_get_trace correctly handles NULL");
-       trace = bt_ctf_writer_get_trace(writer);
-       ok(trace,
-               "bt_ctf_writer_get_trace returns a bt_ctf_trace object");
        ok(bt_ctf_trace_get_clock_count(NULL) < 0,
                "bt_ctf_trace_get_clock_count correctly handles NULL");
        ok(bt_ctf_trace_get_clock_count(trace) == 1,
@@ -1698,6 +2056,18 @@ int main(int argc, char **argv)
        ok(ret_clock == clock,
                "bt_ctf_trace_get_clock returns the right clock instance");
        bt_ctf_clock_put(ret_clock);
+       ok(!bt_ctf_trace_get_clock_by_name(trace, NULL),
+               "bt_ctf_trace_get_clock_by_name correctly handles NULL (trace)");
+       ok(!bt_ctf_trace_get_clock_by_name(NULL, clock_name),
+               "bt_ctf_trace_get_clock_by_name correctly handles NULL (clock name)");
+       ok(!bt_ctf_trace_get_clock_by_name(NULL, NULL),
+               "bt_ctf_trace_get_clock_by_name correctly handles NULL (both)");
+       ret_clock = bt_ctf_trace_get_clock_by_name(trace, clock_name);
+       ok(ret_clock == clock,
+               "bt_ctf_trace_get_clock_by_name returns the right clock instance");
+       bt_ctf_clock_put(ret_clock);
+       ok(!bt_ctf_trace_get_clock_by_name(trace, "random"),
+               "bt_ctf_trace_get_clock_by_name fails when the requested clock doesn't exist");
 
        ok(!bt_ctf_clock_get_name(NULL),
                "bt_ctf_clock_get_name correctly handles NULL");
@@ -1789,7 +2159,7 @@ int main(int argc, char **argv)
        ok(bt_ctf_stream_class_get_id(stream_class) == 123,
                "bt_ctf_stream_class_get_id returns the correct value");
 
-       /* Add a custom event header field */
+       /* Validate default event header fields */
        ok(bt_ctf_stream_class_get_event_header_type(NULL) == NULL,
                "bt_ctf_stream_class_get_event_header_type handles NULL correctly");
        ret_field_type = bt_ctf_stream_class_get_event_header_type(
@@ -1977,6 +2347,8 @@ int main(int argc, char **argv)
        ok(!bt_ctf_stream_set_packet_header(stream1, packet_header),
                "Successfully set a stream's packet header");
 
+       test_instanciate_event_before_stream(writer);
+
        append_simple_event(stream_class, stream1, clock);
 
        packet_resize_test(stream_class, stream1, clock);
@@ -2010,7 +2382,6 @@ int main(int argc, char **argv)
        free(metadata_string);
 
        /* Remove all trace files and delete temporary trace directory */
-       /*
        DIR *trace_dir = opendir(trace_path);
        if (!trace_dir) {
                perror("# opendir");
@@ -2026,6 +2397,5 @@ int main(int argc, char **argv)
 
        rmdir(trace_path);
        closedir(trace_dir);
-       */
        return 0;
 }
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