improve testing

Author: tarasyarema

expr_test.go

@@ -2724,3 +2724,24 @@ func TestExpr_wierd_cases(t *testing.T) {
 	require.Error(t, err)
 	require.Contains(t, err.Error(), "unknown name A")
 }
+
+func TestIssue785_get_nil(t *testing.T) {
+	exprStrs := []string{
+		`get(nil, "a")`,
+		`get({}, "a")`,
+		`get(nil, "a")`,
+		`get({}, "a")`,
+		`({} | get("a") | get("b"))`,
+	}
+
+	for _, exprStr := range exprStrs {
+		t.Run("get returns nil", func(t *testing.T) {
+			env := map[string]interface{}{}
+
+			result, err := expr.Eval(exprStr, env)
+			require.NoError(t, err)
+
+			require.Equal(t, nil, result)
+		})
+	}
+}

test/fuzz/fuzz_corpus.txt

@@ -7221,11 +7221,6 @@ get(true ? i64 : greet, i32)
 get(true ? score : true, half)?.half
 get(true ? true : i, f64)
 get({"foo": foo, "bar": false}, type(i))
-get(nil, "a")
-get({}, "a")
-get(nil, "a") == nil
-get({}, "a") == nil
-({} | get("a") | get("b")) == nil
 greet
 greet != greet
 greet != greet != ok