| 1 | //===---------- string_pool_test.cpp - Unit tests for StringPool ----------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "string_pool.h" |
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| 10 | #include "gtest/gtest.h" |
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| 11 | |
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| 12 | using namespace orc_rt; |
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| 13 | |
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| 14 | namespace { |
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| 15 | |
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| 16 | TEST(StringPool, UniquingAndComparisons) { |
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| 17 | StringPool SP; |
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| 18 | auto P1 = SP.intern("hello" ); |
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| 19 | |
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| 20 | std::string S("hel" ); |
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| 21 | S += "lo" ; |
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| 22 | auto P2 = SP.intern(S); |
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| 23 | |
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| 24 | auto P3 = SP.intern("goodbye" ); |
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| 25 | |
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| 26 | EXPECT_EQ(P1, P2) << "Failed to unique entries" ; |
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| 27 | EXPECT_NE(P1, P3) << "Unequal pooled strings comparing equal" ; |
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| 28 | |
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| 29 | // We want to test that less-than comparison of PooledStringPtrs compiles, |
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| 30 | // however we can't test the actual result as this is a pointer comparison and |
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| 31 | // PooledStringPtr doesn't expose the underlying address of the string. |
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| 32 | (void)(P1 < P3); |
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| 33 | } |
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| 34 | |
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| 35 | TEST(StringPool, Dereference) { |
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| 36 | StringPool SP; |
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| 37 | auto Foo = SP.intern("foo" ); |
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| 38 | EXPECT_EQ(*Foo, "foo" ) << "Equality on dereferenced string failed" ; |
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| 39 | } |
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| 40 | |
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| 41 | TEST(StringPool, ClearDeadEntries) { |
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| 42 | StringPool SP; |
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| 43 | { |
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| 44 | auto P1 = SP.intern("s1" ); |
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| 45 | SP.clearDeadEntries(); |
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| 46 | EXPECT_FALSE(SP.empty()) << "\"s1\" entry in pool should still be retained" ; |
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| 47 | } |
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| 48 | SP.clearDeadEntries(); |
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| 49 | EXPECT_TRUE(SP.empty()) << "pool should be empty" ; |
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| 50 | } |
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| 51 | |
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| 52 | TEST(StringPool, NullPtr) { |
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| 53 | // Make sure that we can default construct and then destroy a null |
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| 54 | // PooledStringPtr. |
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| 55 | PooledStringPtr Null; |
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| 56 | } |
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| 57 | |
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| 58 | TEST(StringPool, Hashable) { |
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| 59 | StringPool SP; |
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| 60 | PooledStringPtr P1 = SP.intern("s1" ); |
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| 61 | PooledStringPtr Null; |
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| 62 | EXPECT_NE(std::hash<PooledStringPtr>()(P1), |
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| 63 | std::hash<PooledStringPtr>()(Null)); |
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| 64 | } |
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| 65 | |
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| 66 | } // end anonymous namespace |
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| 67 | |
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