test: add missing tests in the js libraries (#774)

* test: add missing tests

Now all lines of js libraries are 100% covered.

re #484

* test(proof): update message type

re #484

* test(proof): update constant

re #484

* test(proof): update number constant

re #484

Author: vplasencia

packages/data/tests/ethers.test.ts

@@ -18,7 +18,8 @@ jest.mock("ethers/contract", () => ({
                 getMerkleTreeRoot: () => "222",
                 getMerkleTreeDepth: () => BigInt(3),
                 getMerkleTreeSize: () => BigInt(8),
-                getGroupAdmin: () => "0xA9C2B639a28cDa8b59C4377e980F75A93dD8605F"
+                getGroupAdmin: () => "0xA9C2B639a28cDa8b59C4377e980F75A93dD8605F",
+                hasMember: () => true
             }) as any
     )
 }))
@@ -235,4 +236,25 @@ describe("SemaphoreEthers", () => {
             await expect(fun).rejects.toThrow("Group '666' not found")
         })
     })
+
+    describe("isGroupMember", () => {
+        it("Should return true because the member is part of the group", async () => {
+            const semaphore = new SemaphoreEthers()
+
+            const isMember = await semaphore.isGroupMember("42", "1")
+
+            expect(isMember).toBeTruthy()
+        })
+        it("Should return false because the member is not part of the group", async () => {
+            ContractMocked.mockReturnValueOnce({
+                hasMember: () => false
+            } as any)
+
+            const semaphore = new SemaphoreEthers()
+
+            const isMember = await semaphore.isGroupMember("48", "2")
+
+            expect(isMember).toBeFalsy()
+        })
+    })
 })

packages/proof/tests/index.test.ts

@@ -58,6 +58,30 @@ describe("Proof", () => {
             expect(typeof proof).toBe("object")
             expect(BigInt(proof.merkleTreeRoot)).toBe(group.root)
         }, 70000)
+
+        it("Should generate a Semaphore proof without passing the tree depth", async () => {
+            const group = new Group([1n, 2n, identity.commitment])
+
+            proof = await generateProof(identity, group, message, scope)
+
+            expect(typeof proof).toBe("object")
+            expect(BigInt(proof.merkleTreeRoot)).toBe(group.root)
+        }, 70000)
+
+        it("Should throw an error because snarkArtifacts is not an object", async () => {
+            const group = new Group([1n, 2n, identity.commitment])
+            const fun = () => generateProof(identity, group, message, scope, undefined, "hello" as any)
+
+            await expect(fun).rejects.toThrow("is not an object")
+        })
+
+        it("Should throw an error because the message value is incorrect", async () => {
+            const group = new Group([1n, 2n, identity.commitment])
+
+            const fun = () => generateProof(identity, group, Number.MAX_VALUE, scope, treeDepth)
+
+            await expect(fun).rejects.toThrow("overflow")
+        })
     })
 
     describe("# verifyProof", () => {