1 files changed, 86 insertions, 0 deletions

diff --git a/fscanf.c b/fscanf.c
index b03589a..6eee68f 100644
--- a/fscanf.c
+++ b/fscanf.c
@@ -12,9 +12,22 @@
 !strcmp((s),(x)) || \
 (printf(__FILE__ ":%d: [%s] != [%s] (%s)\n", __LINE__, s, x, m), err++, 0) )
 
+static FILE *writetemp(const char *data)
+{
+	FILE *f = tmpfile();
+	if (!f) return 0;
+	if (!fwrite(data, strlen(data), 1, f)) {
+		fclose(f);
+		return 0;
+	}
+	rewind(f);
+	return f;
+}
+
 int test_fscanf(void)
 {
 	int i, x, y;
+	double u, v;
 	int err=0;
 	char a[100], b[100], *s;
 	FILE *f;
@@ -43,5 +56,78 @@ int test_fscanf(void)
 	fclose(f);
 	close(p[1]);
 
+	TEST(i, !!(f=writetemp("      42")), 1, "failed to make temp file");
+	if (f) {
+		x=y=-1;
+		TEST(i, fscanf(f, " %n%*d%n", &x, &y), 0, "%d != %d");
+		TEST(i, x, 6, "%d != %d");
+		TEST(i, y, 8, "%d != %d");
+		TEST(i, ftell(f), 8, "%d != %d");
+		TEST(i, !!feof(f), 1, "%d != %d");
+		fclose(f);
+	}
+
+	TEST(i, !!(f=writetemp("[abc123]....x")), 1, "failed to make temp file");
+	if (f) {
+		x=y=-1;
+		TEST(i, fscanf(f, "%10[^]]%n%10[].]%n", a, &x, b, &y), 2, "%d != %d");
+		TEST_S(a, "[abc123", "wrong result for %[^]]");
+		TEST_S(b, "]....", "wrong result for %[].]");
+		TEST(i, x, 7, "%d != %d");
+		TEST(i, y, 12, "%d != %d");
+		TEST(i, ftell(f), 12, "%d != %d");
+		TEST(i, feof(f), 0, "%d != %d");
+		TEST(i, fgetc(f), 'x', "%d != %d");
+		fclose(f);
+	}
+
+	TEST(i, !!(f=writetemp("0x1p 12")), 1, "failed to make temp file");
+	if (f) {
+		x=y=-1;
+		u=-1;
+		TEST(i, fscanf(f, "%lf%n %d", &u, &x, &y), 0, "%d != %d");
+		TEST(u, u, -1.0, "%g != %g");
+		TEST(i, x, -1, "%d != %d");
+		TEST(i, y, -1, "%d != %d");
+		TEST(i, ftell(f), 4, "%d != %d");
+		TEST(i, feof(f), 0, "%d != %d");
+		TEST(i, fgetc(f), ' ', "%d != %d");
+		rewind(f);
+		TEST(i, fgetc(f), '0', "%d != %d");
+		TEST(i, fgetc(f), 'x', "%d != %d");
+		TEST(i, fscanf(f, "%lf%n%c %d", &u, &x, a, &y), 3, "%d != %d");
+		TEST(u, u, 1.0, "%g != %g");
+		TEST(i, x, 1, "%d != %d");
+		TEST(i, a[0], 'p', "%d != %d");
+		TEST(i, y, 12, "%d != %d");
+		TEST(i, ftell(f), 7, "%d != %d");
+		TEST(i, !!feof(f), 1, "%d != %d");
+		fclose(f);
+	}
+
+	TEST(i, !!(f=writetemp("0x.1p4    012")), 1, "failed to make temp file");
+	if (f) {
+		x=y=-1;
+		u=-1;
+		TEST(i, fscanf(f, "%lf%n %i", &u, &x, &y), 2, "%d != %d");
+		TEST(u, u, 1.0, "%g != %g");
+		TEST(i, x, 6, "%d != %d");
+		TEST(i, y, 10, "%d != %d");
+		TEST(i, ftell(f), 13, "%d != %d");
+		TEST(i, !!feof(f), 1, "%d != %d");
+		fclose(f);
+	}
+
+	TEST(i, !!(f=writetemp("0xx")), 1, "failed to make temp file");
+	if (f) {
+		x=y=-1;
+		TEST(i, fscanf(f, "%x%n", &x, &y), 0, "%d != %d");
+		TEST(i, x, -1, "%d != %d");
+		TEST(i, y, -1, "%d != %d");
+		TEST(i, ftell(f), 2, "%d != %d");
+		TEST(i, feof(f), 0, "%d != %d");
+		fclose(f);
+	}
+
 	return err;
 }