split lookahead tests into positive and negative

1 files changed, 62 insertions, 0 deletions

diff --git a/test-cases/case2_positive_lookahead/script.sh b/test-cases/case2_positive_lookahead/script.sh
new file mode 100644
index 0000000..e24cbcb
--- /dev/null
+++ b/test-cases/case2_positive_lookahead/script.sh
@@ -0,0 +1,62 @@
+case foo {
+    f(?=o)oo {}
+    .* { echo fail 1 }
+}
+
+case foo {
+    fo(?=x)o { echo fail 2 }
+    .* { }
+}
+
+fun match {
+    set res = $($1 $2)
+    if [ $res != $3 ] {
+        echo "match $1 $2: expected $3, got $res"
+    }
+}
+
+fun x0 {
+    case $1 {
+        a(?=b). { echo yes }
+        .* { echo no }
+    }
+}
+match x0 aa no
+match x0 aaa no
+match x0 ab yes
+
+fun x1 {
+    case $1 {
+        x(?=foo)(?=...bar).* { echo yes }
+        .* { echo no }
+    }
+}
+match x1 xfoobar yes
+match x1 xfoobar_some_more_stuff yes
+match x1 x___bar no
+match x1 xfoo___ no
+match x1 xfoo    no
+
+fun x2 {
+    case $1 {
+        (?=foo).*(?=bar).* { echo yes }
+        .* { echo no }
+    }
+}
+match x2 foobar yes
+match x2 foobarbaz yes
+match x2 barfoo no
+match x2 foobaz no
+match x3 foo_stuff_bar yes
+match x3 foo_stuff_bar_more_stuff yes
+
+fun x3 {
+    case $1 {
+        (?=abc).*(?=cde).* { echo yes }
+        .* { echo no }
+    }
+}
+match x3 abc_cde yes
+match x3 abcde yes
+match x3 abcdef yes
+match x3 abde no