1 files changed, 38 insertions, 0 deletions
diff --git a/tests/sptree.c b/tests/sptree.c
index 6ab3d6a..9eff356 100644
--- a/tests/sptree.c
+++ b/tests/sptree.c
@@ -1,4 +1,5 @@
 #include <assert.h>
+#include <stdlib.h>
 #include <stdio.h>
 #include "test.h"
 
@@ -23,6 +24,11 @@ int main()
 #endif
 
 	struct ints ints = ints_create();
+	/* check that iterating an empty tree doesn't do anything */
+	foreach(ints, iter, &ints) {
+		assert(false && "iterating empty tree");
+	}
+
 	for (int i = 0; i < 1000000; ++i) {
 		if (!ints_insert(&ints, i)) {
 			fprintf(stderr, "failed inserting %d\n", i);
@@ -37,6 +43,11 @@ int main()
 		assert(v && *v == i);
 	}
 
+	/* check that inserting duplicate returns the original */
+	int *orig = ints_find(&ints, 0);
+	ints_insert(&ints, 0);
+	assert(ints_find(&ints, 0) == orig);
+
 	int i = 0;
 	foreach(ints, iter, &ints) {
 		/* since my trees are ordered, this must hold, although you
@@ -51,5 +62,32 @@ int main()
 	}
 
 	assert(ints_len(&ints) == 0);
+
+	/* check that removing nonexistant item (or empty tree) doesn't crash */
+	ints_remove(&ints, 0);
+
+	/* insert random integers to hopefully exercise the code a bit more */
+	srand(0);
+
+	int inserted[1000];
+	for (int i = 0; i < 1000; ++i) {
+		inserted[i] = rand();
+
+		/* covsrv shouldn't fail anymore */
+		assert(ints_insert(&ints, inserted[i]));
+	}
+
+	for (int i = 0; i < 1000; ++i) {
+		int *v = ints_find(&ints, inserted[i]);
+		assert(v && *v == inserted[i]);
+	}
+
+	for (int i = 0; i < 1000; ++i) {
+		ints_remove(&ints, inserted[i]);
+	}
+
+	assert(ints_len(&ints) == 0);
+
+
 	ints_destroy(&ints);
 }