chore: a test for interactionType check

src/__tests__/integration/basic/pst.test.ts

@@ -118,6 +118,20 @@ describe('Testing the Profit Sharing Token', () => {
     expect(resultVM.target).toEqual('uhE-QeYS8i4pmUtnxQyHD7dzXFNaJ9oMK-IM-QPNY6M');
   });
 
+  // note that this requires a check inside contract code!
+  it('should not eval interaction that calls view function', async () => {
+    const interaction = await pst.writeInteraction({
+      function: 'balance'
+    });
+
+    await mineBlock(warp);
+
+    const result = await pst.readState();
+
+    expect(result.cachedValue.validity[interaction.originalTxId]).toBeFalsy();
+    expect(result.cachedValue.errorMessages[interaction.originalTxId]).toContain('Trying to call "view" function from a "write" action');
+  });
+
   it('should properly dispatch an event', async () => {
     let handlerCalled = false;
     const interactionResult = await pst.writeInteraction({

src/__tests__/integration/data/token-pst.js

@@ -3,6 +3,7 @@ export async function handle(state, action) {
   const canEvolve = state.canEvolve;
   const input = action.input;
   const caller = action.caller;
+  const interactionType = action.interactionType;
 
   if (input.function === 'transfer') {
     const target = input.target;
@@ -66,6 +67,10 @@ export async function handle(state, action) {
   }
 
   if (input.function === 'balance') {
+    if (interactionType !== 'view') {
+      throw new ContractError('Trying to call "view" function from a "write" action.');
+    }
+
     const target = input.target;
     const ticker = state.ticker;