1 //===- llvm/unittest/VMCore/Metadata.cpp - Metadata unit tests ------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "gtest/gtest.h"
11 #include "llvm/Constants.h"
12 #include "llvm/Instructions.h"
13 #include "llvm/MDNode.h"
14 #include "llvm/Type.h"
15 #include "llvm/Support/ValueHandle.h"
22 // Test that construction of MDString with different value produces different
23 // MDString objects, even with the same string pointer and nulls in the string.
24 TEST(MDStringTest, CreateDifferent) {
25 char x[3] = { 'f', 0, 'A' };
26 MDString *s1 = getGlobalContext().getMDString(&x[0], &x[3]);
28 MDString *s2 = getGlobalContext().getMDString(&x[0], &x[3]);
32 // Test that creation of MDStrings with the same string contents produces the
33 // same MDString object, even with different pointers.
34 TEST(MDStringTest, CreateSame) {
35 char x[4] = { 'a', 'b', 'c', 'X' };
36 char y[4] = { 'a', 'b', 'c', 'Y' };
38 MDString *s1 = getGlobalContext().getMDString(&x[0], &x[3]);
39 MDString *s2 = getGlobalContext().getMDString(&y[0], &y[3]);
43 // Test that MDString prints out the string we fed it.
44 TEST(MDStringTest, PrintingSimple) {
45 char *str = new char[13];
46 strncpy(str, "testing 1 2 3", 13);
47 MDString *s = getGlobalContext().getMDString(str, str+13);
48 strncpy(str, "aaaaaaaaaaaaa", 13);
51 std::ostringstream oss;
53 EXPECT_STREQ("metadata !\"testing 1 2 3\"", oss.str().c_str());
56 // Test printing of MDString with non-printable characters.
57 TEST(MDStringTest, PrintingComplex) {
58 char str[5] = {0, '\n', '"', '\\', -1};
59 MDString *s = getGlobalContext().getMDString(str+0, str+5);
60 std::ostringstream oss;
62 EXPECT_STREQ("metadata !\"\\00\\0A\\22\\5C\\FF\"", oss.str().c_str());
65 // Test the two constructors, and containing other Constants.
66 TEST(MDNodeTest, Simple) {
67 char x[3] = { 'a', 'b', 'c' };
68 char y[3] = { '1', '2', '3' };
70 MDString *s1 = getGlobalContext().getMDString(&x[0], &x[3]);
71 MDString *s2 = getGlobalContext().getMDString(&y[0], &y[3]);
72 ConstantInt *CI = getGlobalContext().getConstantInt(APInt(8, 0));
74 std::vector<Value *> V;
79 MDNode *n1 = getGlobalContext().getMDNode(&V[0], 3);
81 MDNode *n2 = getGlobalContext().getMDNode(&c1, 1);
82 MDNode *n3 = getGlobalContext().getMDNode(&V[0], 3);
86 EXPECT_EQ(3u, n1->getNumElements());
87 EXPECT_EQ(s1, n1->getElement(0));
88 EXPECT_EQ(CI, n1->getElement(1));
89 EXPECT_EQ(s2, n1->getElement(2));
91 EXPECT_EQ(1u, n2->getNumElements());
92 EXPECT_EQ(n1, n2->getElement(0));
94 std::ostringstream oss1, oss2;
97 EXPECT_STREQ("!0 = metadata !{metadata !\"abc\", i8 0, metadata !\"123\"}\n",
99 EXPECT_STREQ("!0 = metadata !{metadata !1}\n"
100 "!1 = metadata !{metadata !\"abc\", i8 0, metadata !\"123\"}\n",
104 TEST(MDNodeTest, Delete) {
105 Constant *C = getGlobalContext().getConstantInt(Type::Int32Ty, 1);
106 Instruction *I = new BitCastInst(C, Type::Int32Ty);
109 MDNode *n = getGlobalContext().getMDNode(&V, 1);
116 std::ostringstream oss;
118 EXPECT_STREQ("!0 = metadata !{null}\n", oss.str().c_str());