Port andandoror test to littlecheck

tests/checks/andandoror.fish

@@ -0,0 +1,72 @@
+#RUN: %fish %s
+# "Basic && and || support"
+
+echo first && echo second
+echo third || echo fourth
+true && false ; echo "true && false: $status"
+true || false ; echo "true || false: $status"
+true && false || true ; echo "true && false || true: $status"
+# CHECK: first
+# CHECK: second
+# CHECK: third
+# CHECK: true && false: 1
+# CHECK: true || false: 0
+# CHECK: true && false || true: 0
+
+# "&& and || in if statements"
+
+if true || false ; echo "if test 1 ok" ; end
+if true && false ; else; echo "if test 2 ok" ; end
+if true && false ; or true ; echo "if test 3 ok" ; end
+if [ 0 = 1 ] || [ 5 -ge 3 ] ; echo "if test 4 ok"; end
+# CHECK: if test 1 ok
+# CHECK: if test 2 ok
+# CHECK: if test 3 ok
+# CHECK: if test 4 ok
+
+# "&& and || in while statements"
+
+set alpha 0
+set beta 0
+set gamma 0
+set delta 0
+while [ $alpha -lt 2 ] && [ $beta -lt 3 ]
+      or [ $gamma -lt 4 ] || [ $delta -lt 5 ]
+    echo $alpha $beta $gamma
+    set alpha ( math $alpha + 1 )
+    set beta ( math $beta + 1 )
+    set gamma ( math $gamma + 1 )
+    set delta ( math $delta + 1 )
+end
+# CHECK: 0 0 0
+# CHECK: 1 1 1
+# CHECK: 2 2 2
+# CHECK: 3 3 3
+# CHECK: 4 4 4
+
+# "Nots"
+
+true && ! false ; echo $status
+not true && ! false ; echo $status
+not not not true ; echo $status
+not ! ! not true ; echo $status
+not ! echo not ! ; echo $status
+# CHECK: 0
+# CHECK: 1
+# CHECK: 1
+# CHECK: 0
+# CHECK: not !
+# CHECK: 0
+
+# "Complex scenarios"
+
+begin; echo 1 ; false ; end || begin ; echo 2 && echo 3 ; end
+
+if false && true
+   or not false
+   echo 4
+end
+# CHECK: 1
+# CHECK: 2
+# CHECK: 3
+# CHECK: 4