JACOBIN-552 Adding unit tests for cpUtils

src/classloader/cpUtils_test.go

@@ -0,0 +1,44 @@
+/*
+ * Jacobin VM - A Java virtual machine
+ * Copyright (c) 2024 by the Jacobin Authors. All rights reserved.
+ * Licensed under Mozilla Public License 2.0 (MPL 2.0) Consult jacobin.org.
+ */
+
+package classloader
+
+import (
+ "jacobin/globals"
+ "jacobin/log"
+ "testing"
+)
+
+func TestMeInfoFromMethRefInvalid(t *testing.T) {
+ globals.InitGlobals("test")
+ log.Init()
+ _ = log.SetLogLevel(log.CLASS)
+
+ // set up a class with a constant pool containing the one
+ // errors in it
+ klass := CPool{}
+ klass.CpIndex = append(klass.CpIndex, CpEntry{})
+ klass.CpIndex = append(klass.CpIndex, CpEntry{IntConst, 0})
+ klass.CpIndex = append(klass.CpIndex, CpEntry{UTF8, 0})
+
+ klass.IntConsts = append(klass.IntConsts, int32(26))
+ klass.Utf8Refs = append(klass.Utf8Refs, "Hello string")
+
+ s1, s2, s3 := GetMethInfoFromCPmethref(&klass, 0)
+ if s1 != "" && s2 != "" && s3 != "" {
+ t.Errorf("Did not get expected result for pointing to CPentry[0]")
+ }
+
+ s1, s2, s3 = GetMethInfoFromCPmethref(&klass, 999)
+ if s1 != "" && s2 != "" && s3 != "" {
+ t.Errorf("Did not get expected result for pointing to CPentry outside of CP")
+ }
+
+ s1, s2, s3 = GetMethInfoFromCPmethref(&klass, 1)
+ if s1 != "" && s2 != "" && s3 != "" {
+ t.Errorf("Did not get expected result for pointing to CPentry that's not a MethodRef")
+ }
+}