[PATCH 2/4] t: move reftable/tree_test.c to the unit testing framework

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reftable/tree_test.c exercises the functions defined in
reftable/tree.{c, h}. Migrate reftable/tree_test.c to the
unit testing framework. Migration involves refactoring the tests
to use the unit testing framework instead of reftable's test
framework.

Mentored-by: Patrick Steinhardt <ps@xxxxxx>
Mentored-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
Signed-off-by: Chandra Pratap <chandrapratap3519@xxxxxxxxx>
---
 Makefile                                      |  2 +-
 t/helper/test-reftable.c                      |  1 -
 .../unit-tests/t-reftable-tree.c              | 32 ++++++++-----------
 3 files changed, 15 insertions(+), 20 deletions(-)
 rename reftable/tree_test.c => t/unit-tests/t-reftable-tree.c (59%)

diff --git a/Makefile b/Makefile
index 2f5f16847a..d736b2f8bd 100644
--- a/Makefile
+++ b/Makefile
@@ -1336,6 +1336,7 @@ THIRD_PARTY_SOURCES += sha1dc/%
 UNIT_TEST_PROGRAMS += t-ctype
 UNIT_TEST_PROGRAMS += t-mem-pool
 UNIT_TEST_PROGRAMS += t-prio-queue
+UNIT_TEST_PROGRAMS += t-reftable-tree
 UNIT_TEST_PROGRAMS += t-strbuf
 UNIT_TEST_PROGRAMS += t-strcmp-offset
 UNIT_TEST_PROGRAMS += t-strvec
@@ -2681,7 +2682,6 @@ REFTABLE_TEST_OBJS += reftable/record_test.o
 REFTABLE_TEST_OBJS += reftable/readwrite_test.o
 REFTABLE_TEST_OBJS += reftable/stack_test.o
 REFTABLE_TEST_OBJS += reftable/test_framework.o
-REFTABLE_TEST_OBJS += reftable/tree_test.o
 
 TEST_OBJS := $(patsubst %$X,%.o,$(TEST_PROGRAMS)) $(patsubst %,t/helper/%,$(TEST_BUILTINS_OBJS))
 
diff --git a/t/helper/test-reftable.c b/t/helper/test-reftable.c
index bae731669c..9475db2f76 100644
--- a/t/helper/test-reftable.c
+++ b/t/helper/test-reftable.c
@@ -8,7 +8,6 @@ int cmd__reftable(int argc, const char **argv)
 	basics_test_main(argc, argv);
 	record_test_main(argc, argv);
 	block_test_main(argc, argv);
-	tree_test_main(argc, argv);
 	pq_test_main(argc, argv);
 	readwrite_test_main(argc, argv);
 	merged_test_main(argc, argv);
diff --git a/reftable/tree_test.c b/t/unit-tests/t-reftable-tree.c
similarity index 59%
rename from reftable/tree_test.c
rename to t/unit-tests/t-reftable-tree.c
index 6961a657ad..208e7b7874 100644
--- a/reftable/tree_test.c
+++ b/t/unit-tests/t-reftable-tree.c
@@ -6,11 +6,8 @@ license that can be found in the LICENSE file or at
 https://developers.google.com/open-source/licenses/bsd
 */
 
-#include "system.h"
-#include "tree.h"
-
-#include "test_framework.h"
-#include "reftable-tests.h"
+#include "test-lib.h"
+#include "reftable/tree.h"
 
 static int test_compare(const void *a, const void *b)
 {
@@ -24,37 +21,36 @@ struct curry {
 static void check_increasing(void *arg, void *key)
 {
 	struct curry *c = arg;
-	if (c->last) {
-		EXPECT(test_compare(c->last, key) < 0);
-	}
+	if (c->last)
+		check_int(test_compare(c->last, key), <, 0);
 	c->last = key;
 }
 
 static void test_tree(void)
 {
 	struct tree_node *root = NULL;
+	void *values[11] = { 0 };
+	struct tree_node *nodes[11] = { 0 };
+	size_t i = 1;
+	struct curry c = { 0 };
 
-	void *values[11] = { NULL };
-	struct tree_node *nodes[11] = { NULL };
-	int i = 1;
-	struct curry c = { NULL };
 	do {
 		nodes[i] = tree_search(values + i, &root, &test_compare, 1);
 		i = (i * 7) % 11;
 	} while (i != 1);
 
 	for (i = 1; i < ARRAY_SIZE(nodes); i++) {
-		EXPECT(values + i == nodes[i]->key);
-		EXPECT(nodes[i] ==
-		       tree_search(values + i, &root, &test_compare, 0));
+		check_pointer_eq(values + i, nodes[i]->key);
+		check_pointer_eq(nodes[i], tree_search(values + i, &root, &test_compare, 0));
 	}
 
 	infix_walk(root, check_increasing, &c);
 	tree_free(root);
 }
 
-int tree_test_main(int argc, const char *argv[])
+int cmd_main(int argc, const char *argv[])
 {
-	RUN_TEST(test_tree);
-	return 0;
+	TEST(test_tree(), "tree_search and infix_walk work");
+
+	return test_done();
 }
-- 
2.45.2.404.g9eaef5822c





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