1 files changed, 69 insertions, 0 deletions
diff --git a/test/prism/snapshots/unparser/corpus/semantic/opasgn.txt b/test/prism/snapshots/unparser/corpus/semantic/opasgn.txt
new file mode 100644
index 0000000000..7dd26a38dc
--- /dev/null
+++ b/test/prism/snapshots/unparser/corpus/semantic/opasgn.txt
@@ -0,0 +1,69 @@
+@ ProgramNode (location: (1,0)-(1,25))
+├── locals: []
+└── statements:
+    @ StatementsNode (location: (1,0)-(1,25))
+    └── body: (length: 1)
+        └── @ IndexOperatorWriteNode (location: (1,0)-(1,25))
+            ├── flags: ∅
+            ├── receiver:
+            │   @ CallNode (location: (1,0)-(1,1))
+            │   ├── flags: variable_call, ignore_visibility
+            │   ├── receiver: ∅
+            │   ├── call_operator_loc: ∅
+            │   ├── name: :y
+            │   ├── message_loc: (1,0)-(1,1) = "y"
+            │   ├── opening_loc: ∅
+            │   ├── arguments: ∅
+            │   ├── closing_loc: ∅
+            │   └── block: ∅
+            ├── call_operator_loc: ∅
+            ├── opening_loc: (1,1)-(1,2) = "["
+            ├── arguments:
+            │   @ ArgumentsNode (location: (1,2)-(1,11))
+            │   ├── flags: ∅
+            │   └── arguments: (length: 1)
+            │       └── @ InterpolatedStringNode (location: (1,2)-(1,11))
+            │           ├── flags: ∅
+            │           ├── opening_loc: (1,2)-(1,3) = "\""
+            │           ├── parts: (length: 2)
+            │           │   ├── @ EmbeddedStatementsNode (location: (1,3)-(1,8))
+            │           │   │   ├── opening_loc: (1,3)-(1,5) = "\#{"
+            │           │   │   ├── statements:
+            │           │   │   │   @ StatementsNode (location: (1,5)-(1,7))
+            │           │   │   │   └── body: (length: 1)
+            │           │   │   │       └── @ IntegerNode (location: (1,5)-(1,7))
+            │           │   │   │           ├── flags: decimal
+            │           │   │   │           └── value: 42
+            │           │   │   └── closing_loc: (1,7)-(1,8) = "}"
+            │           │   └── @ StringNode (location: (1,8)-(1,10))
+            │           │       ├── flags: frozen
+            │           │       ├── opening_loc: ∅
+            │           │       ├── content_loc: (1,8)-(1,10) = "\\n"
+            │           │       ├── closing_loc: ∅
+            │           │       └── unescaped: "\n"
+            │           └── closing_loc: (1,10)-(1,11) = "\""
+            ├── closing_loc: (1,11)-(1,12) = "]"
+            ├── block: ∅
+            ├── binary_operator: :+
+            ├── binary_operator_loc: (1,13)-(1,15) = "+="
+            └── value:
+                @ InterpolatedStringNode (location: (1,16)-(1,25))
+                ├── flags: ∅
+                ├── opening_loc: (1,16)-(1,17) = "\""
+                ├── parts: (length: 2)
+                │   ├── @ EmbeddedStatementsNode (location: (1,17)-(1,22))
+                │   │   ├── opening_loc: (1,17)-(1,19) = "\#{"
+                │   │   ├── statements:
+                │   │   │   @ StatementsNode (location: (1,19)-(1,21))
+                │   │   │   └── body: (length: 1)
+                │   │   │       └── @ IntegerNode (location: (1,19)-(1,21))
+                │   │   │           ├── flags: decimal
+                │   │   │           └── value: 42
+                │   │   └── closing_loc: (1,21)-(1,22) = "}"
+                │   └── @ StringNode (location: (1,22)-(1,24))
+                │       ├── flags: frozen
+                │       ├── opening_loc: ∅
+                │       ├── content_loc: (1,22)-(1,24) = "\\n"
+                │       ├── closing_loc: ∅
+                │       └── unescaped: "\n"
+                └── closing_loc: (1,24)-(1,25) = "\""