Reorganize tests

test/suite-io.janet

@@ -0,0 +1,72 @@
+# Copyright (c) 2023 Calvin Rose & contributors
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+(import ./helper :prefix "" :exit true)
+(start-suite)
+
+# Printing to buffers
+# d47804d22
+(def out-buf @"")
+(def err-buf @"")
+(with-dyns [:out out-buf :err err-buf]
+  (print "Hello")
+  (prin "hi")
+  (eprint "Sup")
+  (eprin "not much."))
+
+(assert (= (string out-buf) "Hello\nhi") "print and prin to buffer 1")
+(assert (= (string err-buf) "Sup\nnot much.")
+        "eprint and eprin to buffer 1")
+
+# Printing to functions
+# 4e263b8c3
+(def out-buf @"")
+(defn prepend [x]
+  (with-dyns [:out out-buf]
+    (prin "> " x)))
+(with-dyns [:out prepend]
+  (print "Hello world"))
+
+(assert (= (string out-buf) "> Hello world\n")
+        "print to buffer via function")
+
+# c2f844157, 3c523d66e
+(with [f (file/temp)]
+  (assert (= 0 (file/tell f)) "start of file")
+  (file/write f "foo\n")
+  (assert (= 4 (file/tell f)) "after written string")
+  (file/flush f)
+  (file/seek f :set 0)
+  (assert (= 0 (file/tell f)) "start of file again")
+  (assert (= (string (file/read f :all)) "foo\n") "temp files work"))
+
+# issue #1055 - 2c927ea76
+(let [b @""]
+  (defn dummy [a b c]
+    (+ a b c))
+  (trace dummy)
+  (defn errout [arg]
+    (buffer/push b arg))
+  (assert (= 6 (with-dyns [*err* errout] (dummy 1 2 3)))
+          "trace to custom err function")
+  (assert (deep= @"trace (dummy 1 2 3)\n" b) "trace buffer correct"))
+
+(end-suite)
+