Add emu_stream unit test

test/unit/CMakeLists.txt

@@ -18,3 +18,4 @@ unit_test(prv.c)
 unit_test(emu_trace.c)
 unit_test(emu.c)
 unit_test(clkoff.c)
+unit_test(emu_stream.c)

test/unit/emu_stream.c

@@ -0,0 +1,70 @@
+#define _GNU_SOURCE
+
+#include "emu/emu.h"
+#include "common.h"
+
+#include <stdio.h>
+#include <unistd.h>
+
+static void
+test_ok(char *fname)
+{
+	FILE *f = fopen(fname, "w");
+
+	if (f == NULL)
+		die("fopen failed\n");
+
+	/* Write bogus header */
+	struct ovni_stream_header header;
+	memcpy(&header.magic, OVNI_STREAM_MAGIC, 4);
+	header.version = OVNI_STREAM_VERSION;
+
+	if (fwrite(&header, sizeof(header), 1, f) != 1)
+		die("fwrite failed\n");
+
+	fclose(f);
+
+	struct emu_stream stream;
+	const char *relpath = &fname[5];
+	if (emu_stream_load(&stream, "/tmp", relpath) != 0)
+		die("emu_stream_load failed");
+}
+
+static void
+test_bad(char *fname)
+{
+	FILE *f = fopen(fname, "w");
+
+	if (f == NULL)
+		die("fopen failed\n");
+
+	/* Write bogus header */
+	struct ovni_stream_header header;
+	memcpy(&header.magic, OVNI_STREAM_MAGIC, 4);
+	header.version = 1234; /* Wrong version */
+
+	if (fwrite(&header, sizeof(header), 1, f) != 1)
+		die("fwrite failed\n");
+
+	fclose(f);
+
+	struct emu_stream stream;
+	const char *relpath = &fname[5];
+	if (emu_stream_load(&stream, "/tmp", relpath) == 0)
+		die("emu_stream_load didn't fail");
+}
+
+int main(void)
+{
+	/* Create temporary trace file */
+	char fname[] = "/tmp/ovni.stream.XXXXXX";
+	int fd = mkstemp(fname);
+	if (fd < 0)
+		die("mkstemp failed\n");
+
+	test_ok(fname);
+	test_bad(fname);
+
+	close(fd);
+
+}