Import whitequark find pattern tests

Co-authored-by: Alexandre Terrasa <583144+Morriar@users.noreply.github.com>

test/whitequark/test_find_pattern_0.parse-tree-whitequark.exp

@@ -0,0 +1,12 @@
+s(:case_match,
+  s(:lvar, :foo),
+  s(:in_pattern,
+    s(:find_pattern,
+      s(:match_rest,
+        s(:match_var, :x)),
+      s(:match_as,
+        s(:int, "1"),
+        s(:match_var, :a)),
+      s(:match_rest,
+        s(:match_var, :y))), nil,
+    s(:true)), nil)

test/whitequark/test_find_pattern_0.rb

@@ -0,0 +1,3 @@
+# typed: true
+
+case foo; in [*x, 1 => a, *y] then true; end

test/whitequark/test_find_pattern_1.parse-tree-whitequark.exp

@@ -0,0 +1,10 @@
+s(:case_match,
+  s(:lvar, :foo),
+  s(:in_pattern,
+    s(:const_pattern,
+      s(:const, nil, :String),
+      s(:find_pattern,
+        s(:match_rest, nil),
+        s(:int, "1"),
+        s(:match_rest, nil))), nil,
+    s(:true)), nil)

test/whitequark/test_find_pattern_1.rb

@@ -0,0 +1,3 @@
+# typed: true
+
+case foo; in String(*, 1, *) then true; end

test/whitequark/test_find_pattern_2.parse-tree-whitequark.exp

@@ -0,0 +1,10 @@
+s(:case_match,
+  s(:lvar, :foo),
+  s(:in_pattern,
+    s(:const_pattern,
+      s(:const, nil, :Array),
+      s(:find_pattern,
+        s(:match_rest, nil),
+        s(:int, "1"),
+        s(:match_rest, nil))), nil,
+    s(:true)), nil)

test/whitequark/test_find_pattern_2.rb

@@ -0,0 +1,3 @@
+# typed: true
+
+case foo; in Array[*, 1, *] then true; end

test/whitequark/test_find_pattern_3.parse-tree-whitequark.exp

@@ -0,0 +1,8 @@
+s(:case_match,
+  s(:lvar, :foo),
+  s(:in_pattern,
+    s(:find_pattern,
+      s(:match_rest, nil),
+      s(:int, "42"),
+      s(:match_rest, nil)), nil,
+    s(:true)), nil)

test/whitequark/test_find_pattern_3.rb

@@ -0,0 +1,3 @@
+# typed: true
+
+case foo; in *, 42, * then true; end

test/whitequark/test_pattern_matching_required_parentheses_for_in_match_0.rb

@@ -1,3 +1,3 @@
 # typed: true
 
-1 in a, b # error: unexpected token ","
+1 => a, b # error: unexpected token ","

test/whitequark/test_pattern_matching_required_parentheses_for_in_match_1.rb

@@ -1,3 +1,3 @@
 # typed: true
 
-1 in a: # error: unexpected token tLABEL
+1 => a: # error: unexpected token tLABEL

test/whitequark/test_pattern_matching_single_line_0.parse-tree-whitequark.exp

@@ -0,0 +1,6 @@
+s(:begin,
+  s(:match_pattern,
+    s(:int, "1"),
+    s(:array_pattern,
+      s(:match_var, :a))),
+  s(:lvar, :a))

test/whitequark/test_pattern_matching_single_line_0.rb

@@ -0,0 +1,3 @@
+# typed: true
+
+1 => [a]; a

test/whitequark/test_pattern_matching_single_line_1.parse-tree-whitequark.exp

@@ -0,0 +1,6 @@
+s(:begin,
+  s(:match_pattern_p,
+    s(:int, "1"),
+    s(:array_pattern,
+      s(:match_var, :a))),
+  s(:lvar, :a))

test/whitequark/test_pattern_matching_single_line_1.rb

@@ -0,0 +1,3 @@
+# typed: true
+
+1 in [a]; a