1 files changed, 22 insertions, 0 deletions
diff --git a/packages/sol-cov/test/instructions_test.ts b/packages/sol-cov/test/instructions_test.ts
new file mode 100644
index 000000000..f64ec11ed
--- /dev/null
+++ b/packages/sol-cov/test/instructions_test.ts
@@ -0,0 +1,22 @@
+import * as chai from 'chai';
+import * as fs from 'fs';
+import 'mocha';
+import * as path from 'path';
+
+import { getPcToInstructionIndexMapping } from '../src/instructions';
+
+const expect = chai.expect;
+
+describe('instructions', () => {
+    describe('#getPcToInstructionIndexMapping', () => {
+        it('correctly maps pcs to instruction indexed', () => {
+            const PUSH1 = 0x60;
+            const PUSH2 = 0x61;
+            const TIMESTAMP = 0x42;
+            const bytecode = new Uint8Array([PUSH1, 42, PUSH2, 1, 2, TIMESTAMP]);
+            const pcToInstruction = getPcToInstructionIndexMapping(bytecode);
+            const expectedPcToInstruction = { '0': 0, '2': 1, '5': 2 };
+            expect(pcToInstruction).to.be.deep.equal(expectedPcToInstruction);
+        });
+    });
+});