diff --git a/test/prism/fixtures/whitequark/cond_eflipflop_with_beginless_range.txt b/test/prism/fixtures/whitequark/cond_eflipflop_with_beginless_range.txt
new file mode 100644
index 0000000000..757863b12b
--- /dev/null
+++ b/test/prism/fixtures/whitequark/cond_eflipflop_with_beginless_range.txt
@@ -0,0 +1 @@
+if ...bar; end
diff --git a/test/prism/fixtures/whitequark/cond_eflipflop_with_endless_range.txt b/test/prism/fixtures/whitequark/cond_eflipflop_with_endless_range.txt
new file mode 100644
index 0000000000..8a3b815ec9
--- /dev/null
+++ b/test/prism/fixtures/whitequark/cond_eflipflop_with_endless_range.txt
@@ -0,0 +1 @@
+if foo...; end
diff --git a/test/prism/fixtures/whitequark/cond_iflipflop_with_beginless_range.txt b/test/prism/fixtures/whitequark/cond_iflipflop_with_beginless_range.txt
new file mode 100644
index 0000000000..4ff5b09690
--- /dev/null
+++ b/test/prism/fixtures/whitequark/cond_iflipflop_with_beginless_range.txt
@@ -0,0 +1 @@
+if ..bar; end
diff --git a/test/prism/fixtures/whitequark/cond_iflipflop_with_endless_range.txt b/test/prism/fixtures/whitequark/cond_iflipflop_with_endless_range.txt
new file mode 100644
index 0000000000..2739ad0e2a
--- /dev/null
+++ b/test/prism/fixtures/whitequark/cond_iflipflop_with_endless_range.txt
@@ -0,0 +1 @@
+if foo..; end
diff --git a/test/prism/fixtures/whitequark/numparam_ruby_bug_19025.txt b/test/prism/fixtures/whitequark/numparam_ruby_bug_19025.txt
new file mode 100644
index 0000000000..f9ffd4329a
--- /dev/null
+++ b/test/prism/fixtures/whitequark/numparam_ruby_bug_19025.txt
@@ -0,0 +1 @@
+p { [_1 **2] }
diff --git a/test/prism/fixtures/whitequark/parser_bug_989.txt b/test/prism/fixtures/whitequark/parser_bug_989.txt
new file mode 100644
index 0000000000..b7b99612b4
--- /dev/null
+++ b/test/prism/fixtures/whitequark/parser_bug_989.txt
@@ -0,0 +1,3 @@
+	<<-HERE
+		content
+	HERE
diff --git a/test/prism/ruby_parser_test.rb b/test/prism/ruby_parser_test.rb
index c9883574a6..8edeac4b4f 100644
--- a/test/prism/ruby_parser_test.rb
+++ b/test/prism/ruby_parser_test.rb
@@ -84,6 +84,7 @@ module Prism
       whitequark/if_while_after_class__since_32.txt
       whitequark/lvar_injecting_match.txt
       whitequark/not.txt
+      whitequark/numparam_ruby_bug_19025.txt
       whitequark/op_asgn_cmd.txt
       whitequark/parser_bug_640.txt
       whitequark/parser_slash_slash_n_escaping_in_literals.txt
diff --git a/test/prism/snapshots/whitequark/cond_eflipflop_with_beginless_range.txt b/test/prism/snapshots/whitequark/cond_eflipflop_with_beginless_range.txt
new file mode 100644
index 0000000000..05972521e8
--- /dev/null
+++ b/test/prism/snapshots/whitequark/cond_eflipflop_with_beginless_range.txt
@@ -0,0 +1,27 @@
+@ ProgramNode (location: (1,0)-(1,14))
+├── locals: []
+└── statements:
+    @ StatementsNode (location: (1,0)-(1,14))
+    └── body: (length: 1)
+        └── @ IfNode (location: (1,0)-(1,14))
+            ├── if_keyword_loc: (1,0)-(1,2) = "if"
+            ├── predicate:
+            │   @ FlipFlopNode (location: (1,3)-(1,9))
+            │   ├── flags: exclude_end
+            │   ├── left: ∅
+            │   ├── right:
+            │   │   @ CallNode (location: (1,6)-(1,9))
+            │   │   ├── flags: variable_call, ignore_visibility
+            │   │   ├── receiver: ∅
+            │   │   ├── call_operator_loc: ∅
+            │   │   ├── name: :bar
+            │   │   ├── message_loc: (1,6)-(1,9) = "bar"
+            │   │   ├── opening_loc: ∅
+            │   │   ├── arguments: ∅
+            │   │   ├── closing_loc: ∅
+            │   │   └── block: ∅
+            │   └── operator_loc: (1,3)-(1,6) = "..."
+            ├── then_keyword_loc: ∅
+            ├── statements: ∅
+            ├── consequent: ∅
+            └── end_keyword_loc: (1,11)-(1,14) = "end"
diff --git a/test/prism/snapshots/whitequark/cond_eflipflop_with_endless_range.txt b/test/prism/snapshots/whitequark/cond_eflipflop_with_endless_range.txt
new file mode 100644
index 0000000000..c85ff292a5
--- /dev/null
+++ b/test/prism/snapshots/whitequark/cond_eflipflop_with_endless_range.txt
@@ -0,0 +1,27 @@
+@ ProgramNode (location: (1,0)-(1,14))
+├── locals: []
+└── statements:
+    @ StatementsNode (location: (1,0)-(1,14))
+    └── body: (length: 1)
+        └── @ IfNode (location: (1,0)-(1,14))
+            ├── if_keyword_loc: (1,0)-(1,2) = "if"
+            ├── predicate:
+            │   @ FlipFlopNode (location: (1,3)-(1,9))
+            │   ├── flags: exclude_end
+            │   ├── left:
+            │   │   @ CallNode (location: (1,3)-(1,6))
+            │   │   ├── flags: variable_call, ignore_visibility
+            │   │   ├── receiver: ∅
+            │   │   ├── call_operator_loc: ∅
+            │   │   ├── name: :foo
+            │   │   ├── message_loc: (1,3)-(1,6) = "foo"
+            │   │   ├── opening_loc: ∅
+            │   │   ├── arguments: ∅
+            │   │   ├── closing_loc: ∅
+            │   │   └── block: ∅
+            │   ├── right: ∅
+            │   └── operator_loc: (1,6)-(1,9) = "..."
+            ├── then_keyword_loc: ∅
+            ├── statements: ∅
+            ├── consequent: ∅
+            └── end_keyword_loc: (1,11)-(1,14) = "end"
diff --git a/test/prism/snapshots/whitequark/cond_iflipflop_with_beginless_range.txt b/test/prism/snapshots/whitequark/cond_iflipflop_with_beginless_range.txt
new file mode 100644
index 0000000000..63b87ffd49
--- /dev/null
+++ b/test/prism/snapshots/whitequark/cond_iflipflop_with_beginless_range.txt
@@ -0,0 +1,27 @@
+@ ProgramNode (location: (1,0)-(1,13))
+├── locals: []
+└── statements:
+    @ StatementsNode (location: (1,0)-(1,13))
+    └── body: (length: 1)
+        └── @ IfNode (location: (1,0)-(1,13))
+            ├── if_keyword_loc: (1,0)-(1,2) = "if"
+            ├── predicate:
+            │   @ FlipFlopNode (location: (1,3)-(1,8))
+            │   ├── flags: ∅
+            │   ├── left: ∅
+            │   ├── right:
+            │   │   @ CallNode (location: (1,5)-(1,8))
+            │   │   ├── flags: variable_call, ignore_visibility
+            │   │   ├── receiver: ∅
+            │   │   ├── call_operator_loc: ∅
+            │   │   ├── name: :bar
+            │   │   ├── message_loc: (1,5)-(1,8) = "bar"
+            │   │   ├── opening_loc: ∅
+            │   │   ├── arguments: ∅
+            │   │   ├── closing_loc: ∅
+            │   │   └── block: ∅
+            │   └── operator_loc: (1,3)-(1,5) = ".."
+            ├── then_keyword_loc: ∅
+            ├── statements: ∅
+            ├── consequent: ∅
+            └── end_keyword_loc: (1,10)-(1,13) = "end"
diff --git a/test/prism/snapshots/whitequark/cond_iflipflop_with_endless_range.txt b/test/prism/snapshots/whitequark/cond_iflipflop_with_endless_range.txt
new file mode 100644
index 0000000000..328a2da153
--- /dev/null
+++ b/test/prism/snapshots/whitequark/cond_iflipflop_with_endless_range.txt
@@ -0,0 +1,27 @@
+@ ProgramNode (location: (1,0)-(1,13))
+├── locals: []
+└── statements:
+    @ StatementsNode (location: (1,0)-(1,13))
+    └── body: (length: 1)
+        └── @ IfNode (location: (1,0)-(1,13))
+            ├── if_keyword_loc: (1,0)-(1,2) = "if"
+            ├── predicate:
+            │   @ FlipFlopNode (location: (1,3)-(1,8))
+            │   ├── flags: ∅
+            │   ├── left:
+            │   │   @ CallNode (location: (1,3)-(1,6))
+            │   │   ├── flags: variable_call, ignore_visibility
+            │   │   ├── receiver: ∅
+            │   │   ├── call_operator_loc: ∅
+            │   │   ├── name: :foo
+            │   │   ├── message_loc: (1,3)-(1,6) = "foo"
+            │   │   ├── opening_loc: ∅
+            │   │   ├── arguments: ∅
+            │   │   ├── closing_loc: ∅
+            │   │   └── block: ∅
+            │   ├── right: ∅
+            │   └── operator_loc: (1,6)-(1,8) = ".."
+            ├── then_keyword_loc: ∅
+            ├── statements: ∅
+            ├── consequent: ∅
+            └── end_keyword_loc: (1,10)-(1,13) = "end"
diff --git a/test/prism/snapshots/whitequark/numparam_ruby_bug_19025.txt b/test/prism/snapshots/whitequark/numparam_ruby_bug_19025.txt
new file mode 100644
index 0000000000..396238cbbf
--- /dev/null
+++ b/test/prism/snapshots/whitequark/numparam_ruby_bug_19025.txt
@@ -0,0 +1,49 @@
+@ ProgramNode (location: (1,0)-(1,14))
+├── locals: []
+└── statements:
+    @ StatementsNode (location: (1,0)-(1,14))
+    └── body: (length: 1)
+        └── @ CallNode (location: (1,0)-(1,14))
+            ├── flags: ignore_visibility
+            ├── receiver: ∅
+            ├── call_operator_loc: ∅
+            ├── name: :p
+            ├── message_loc: (1,0)-(1,1) = "p"
+            ├── opening_loc: ∅
+            ├── arguments: ∅
+            ├── closing_loc: ∅
+            └── block:
+                @ BlockNode (location: (1,2)-(1,14))
+                ├── locals: [:_1]
+                ├── parameters:
+                │   @ NumberedParametersNode (location: (1,2)-(1,14))
+                │   └── maximum: 1
+                ├── body:
+                │   @ StatementsNode (location: (1,4)-(1,12))
+                │   └── body: (length: 1)
+                │       └── @ ArrayNode (location: (1,4)-(1,12))
+                │           ├── flags: ∅
+                │           ├── elements: (length: 1)
+                │           │   └── @ CallNode (location: (1,5)-(1,11))
+                │           │       ├── flags: ∅
+                │           │       ├── receiver:
+                │           │       │   @ LocalVariableReadNode (location: (1,5)-(1,7))
+                │           │       │   ├── name: :_1
+                │           │       │   └── depth: 0
+                │           │       ├── call_operator_loc: ∅
+                │           │       ├── name: :**
+                │           │       ├── message_loc: (1,8)-(1,10) = "**"
+                │           │       ├── opening_loc: ∅
+                │           │       ├── arguments:
+                │           │       │   @ ArgumentsNode (location: (1,10)-(1,11))
+                │           │       │   ├── flags: ∅
+                │           │       │   └── arguments: (length: 1)
+                │           │       │       └── @ IntegerNode (location: (1,10)-(1,11))
+                │           │       │           ├── flags: decimal
+                │           │       │           └── value: 2
+                │           │       ├── closing_loc: ∅
+                │           │       └── block: ∅
+                │           ├── opening_loc: (1,4)-(1,5) = "["
+                │           └── closing_loc: (1,11)-(1,12) = "]"
+                ├── opening_loc: (1,2)-(1,3) = "{"
+                └── closing_loc: (1,13)-(1,14) = "}"
diff --git a/test/prism/snapshots/whitequark/parser_bug_989.txt b/test/prism/snapshots/whitequark/parser_bug_989.txt
new file mode 100644
index 0000000000..c241d6127f
--- /dev/null
+++ b/test/prism/snapshots/whitequark/parser_bug_989.txt
@@ -0,0 +1,11 @@
+@ ProgramNode (location: (1,1)-(1,8))
+├── locals: []
+└── statements:
+    @ StatementsNode (location: (1,1)-(1,8))
+    └── body: (length: 1)
+        └── @ StringNode (location: (1,1)-(1,8))
+            ├── flags: ∅
+            ├── opening_loc: (1,1)-(1,8) = "<<-HERE"
+            ├── content_loc: (2,0)-(3,0) = "\t\tcontent\n"
+            ├── closing_loc: (3,0)-(4,0) = "\tHERE\n"
+            └── unescaped: "\t\tcontent\n"