1 files changed, 46 insertions, 0 deletions
diff --git a/test/buffer.c b/test/buffer.c
new file mode 100644
index 0000000..d7d9b0b
--- /dev/null
+++ b/test/buffer.c
@@ -0,0 +1,46 @@
+#include "assert.h"
+#include "test.h"
+
+#include "buffer.h"
+
+#include <string.h>
+
+void test_move() {
+  struct buffer b = buffer_create("test-buffer");
+  ASSERT(b.dot_col == 0 && b.dot_line == 0,
+         "Expected dot to be at buffer start");
+
+  // make sure we cannot move now
+  buffer_backward_char(&b);
+  buffer_backward_line(&b);
+  ASSERT(b.dot_col == 0 && b.dot_line == 0,
+         "Expected to not be able to move backward in empty buffer");
+
+  buffer_forward_char(&b);
+  buffer_forward_line(&b);
+  ASSERT(b.dot_col == 0 && b.dot_line == 0,
+         "Expected to not be able to move forward in empty buffer");
+
+  // add some text and try again
+  const char *txt = "testing movement";
+  int lineindex = buffer_add_text(&b, (uint8_t *)txt, strlen(txt));
+  ASSERT(lineindex + 1 == 1, "Expected buffer to have one line");
+
+  buffer_beginning_of_line(&b);
+  buffer_forward_char(&b);
+  ASSERT(b.dot_col == 1 && b.dot_line == 0,
+         "Expected to be able to move forward by one char");
+
+  // now we have two lines
+  const char *txt2 = "\n";
+  int lineindex2 = buffer_add_text(&b, (uint8_t *)txt2, strlen(txt2));
+  ASSERT(lineindex2 + 1 == 2, "Expected buffer to have two lines");
+  buffer_backward_line(&b);
+  buffer_beginning_of_line(&b);
+  buffer_backward_char(&b);
+  ASSERT(
+      b.dot_col == 0 && b.dot_line == 0,
+      "Expected to not be able to move backwards when at beginning of buffer");
+}
+
+void run_buffer_tests() { run_test(test_move); }