Extract tests.

5 files changed, 47 insertions, 0 deletions

diff --git a/test/libsolidity/syntaxTests/tupleAssignments/nowarn_swap_memory.sol b/test/libsolidity/syntaxTests/tupleAssignments/nowarn_swap_memory.sol
new file mode 100644
index 00000000..b20bbf90
--- /dev/null
+++ b/test/libsolidity/syntaxTests/tupleAssignments/nowarn_swap_memory.sol
@@ -0,0 +1,8 @@
+contract C {
+	struct S { uint a; uint b; }
+	function f() pure public {
+		S memory x;
+		S memory y;
+		(x, y) = (y, x);
+	}
+}
diff --git a/test/libsolidity/syntaxTests/tupleAssignments/nowarn_swap_storage_pointers.sol b/test/libsolidity/syntaxTests/tupleAssignments/nowarn_swap_storage_pointers.sol
new file mode 100644
index 00000000..5f7a18f7
--- /dev/null
+++ b/test/libsolidity/syntaxTests/tupleAssignments/nowarn_swap_storage_pointers.sol
@@ -0,0 +1,10 @@
+		contract C {
+			struct S { uint a; uint b; }
+			S x; S y;
+			function f() public {
+				S storage x_local = x;
+				S storage y_local = y;
+				S storage z_local = x;
+				(x, y_local, x_local, z_local) = (y, x_local, y_local, y);
+			}
+		}
diff --git a/test/libsolidity/syntaxTests/tupleAssignments/warn_multiple_storage_storage_copies.sol b/test/libsolidity/syntaxTests/tupleAssignments/warn_multiple_storage_storage_copies.sol
new file mode 100644
index 00000000..e4c3e694
--- /dev/null
+++ b/test/libsolidity/syntaxTests/tupleAssignments/warn_multiple_storage_storage_copies.sol
@@ -0,0 +1,9 @@
+contract C {
+	struct S { uint a; uint b; }
+	S x; S y;
+	function f() public {
+		(x, y) = (y, x);
+	}
+}
+// ----
+// Warning: (79-94): This assignment performs two copies to storage. Since storage copies do not first copy to a temporary location, one of them might be overwritten before the second is executed and thus may have unexpected effects. It is safer to perform the copies separately or assign to storage pointers first.
diff --git a/test/libsolidity/syntaxTests/tupleAssignments/warn_multiple_storage_storage_copies_fill_left.sol b/test/libsolidity/syntaxTests/tupleAssignments/warn_multiple_storage_storage_copies_fill_left.sol
new file mode 100644
index 00000000..b2979804
--- /dev/null
+++ b/test/libsolidity/syntaxTests/tupleAssignments/warn_multiple_storage_storage_copies_fill_left.sol
@@ -0,0 +1,10 @@
+contract C {
+	struct S { uint a; uint b; }
+	S x; S y;
+	function f() public {
+		(,x, y) = (1, 2, y, x);
+	}
+}
+// ----
+// Warning: (79-101): This assignment performs two copies to storage. Since storage copies do not first copy to a temporary location, one of them might be overwritten before the second is executed and thus may have unexpected effects. It is safer to perform the copies separately or assign to storage pointers first.
+// Warning: (79-101): Different number of components on the left hand side (3) than on the right hand side (4).
diff --git a/test/libsolidity/syntaxTests/tupleAssignments/warn_multiple_storage_storage_copies_fill_right.sol b/test/libsolidity/syntaxTests/tupleAssignments/warn_multiple_storage_storage_copies_fill_right.sol
new file mode 100644
index 00000000..aa35d7d4
--- /dev/null
+++ b/test/libsolidity/syntaxTests/tupleAssignments/warn_multiple_storage_storage_copies_fill_right.sol
@@ -0,0 +1,10 @@
+contract C {
+	struct S { uint a; uint b; }
+	S x; S y;
+	function f() public {
+		(x, y, ) = (y, x, 1, 2);
+	}
+}
+// ----
+// Warning: (79-102): This assignment performs two copies to storage. Since storage copies do not first copy to a temporary location, one of them might be overwritten before the second is executed and thus may have unexpected effects. It is safer to perform the copies separately or assign to storage pointers first.
+// Warning: (79-102): Different number of components on the left hand side (3) than on the right hand side (4).