1 files changed, 31 insertions, 0 deletions
diff --git a/tests/programs/capture.zc b/tests/programs/capture.zc
new file mode 100644
index 0000000..c178791
--- /dev/null
+++ b/tests/programs/capture.zc
@@ -0,0 +1,31 @@
+// capture.start() sends everything the program writes into a string instead of
+// the terminal, and buf.end() stops it and terminates the string. nothing may
+// be printed during a capture, or it lands in the buffer too.
+include "src/lib/std.zc";
+
+fn main() {
+	let buf = capture.start();
+	put_s("hello world!");
+	put_n(42);
+	put_c(10);
+	buf.end();		// stops the capture and terminates the string
+
+	// the capture is off again, so these go to the terminal
+	put_n(outmode); put_c(10);			// 0
+	put_n(outbuf == 0); put_c(10);		// 1, the buffer is handed over
+	put_n(len_w(buf)); put_c(10);		// 15
+	put_s(buf);					// hello world!42
+
+	// a second capture does not disturb the first, and both read back
+	let two = capture.start();
+	put_s("second");
+	two.end();
+	put_n(eq_w(buf, "hello world!42\n")); put_c(10);	// 1
+	put_n(eq_w(two, "second")); put_c(10);		// 1
+
+	// capture_stdin returns an empty string, so an unused capture is empty
+	let three = capture.start();
+	three.end();
+	put_n(len_w(three)); put_c(10);		// 0
+	return 0;
+}
+\ No newline at end of file