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| 1 | +// (c) Copyright gosec's authors |
| 2 | +// |
| 3 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | +// you may not use this file except in compliance with the License. |
| 5 | +// You may obtain a copy of the License at |
| 6 | +// |
| 7 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | +// |
| 9 | +// Unless required by applicable law or agreed to in writing, software |
| 10 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | +// See the License for the specific language governing permissions and |
| 13 | +// limitations under the License. |
| 14 | + |
| 15 | +package analyzers |
| 16 | + |
| 17 | +import ( |
| 18 | + "go/token" |
| 19 | + "testing" |
| 20 | + |
| 21 | + "golang.org/x/tools/go/ssa" |
| 22 | +) |
| 23 | + |
| 24 | +// TestExtractBinOpBound_NilGuards tests nil safety in extractBinOpBound |
| 25 | +func TestExtractBinOpBound_NilGuards(t *testing.T) { |
| 26 | + // Test nil binop |
| 27 | + bound, value, err := extractBinOpBound(nil) |
| 28 | + if err == nil { |
| 29 | + t.Error("expected error for nil binop") |
| 30 | + } |
| 31 | + if bound != lowerUnbounded { |
| 32 | + t.Errorf("expected lowerUnbounded, got %v", bound) |
| 33 | + } |
| 34 | + if value != 0 { |
| 35 | + t.Errorf("expected value 0, got %d", value) |
| 36 | + } |
| 37 | +} |
| 38 | + |
| 39 | +// TestExtractLenBound_NilGuards tests nil safety in extractLenBound |
| 40 | +func TestExtractLenBound_NilGuards(t *testing.T) { |
| 41 | + // Test nil binop |
| 42 | + val, offset, ok := extractLenBound(nil) |
| 43 | + if ok { |
| 44 | + t.Error("expected false for nil binop") |
| 45 | + } |
| 46 | + if val != nil { |
| 47 | + t.Errorf("expected nil value, got %v", val) |
| 48 | + } |
| 49 | + if offset != 0 { |
| 50 | + t.Errorf("expected offset 0, got %d", offset) |
| 51 | + } |
| 52 | +} |
| 53 | + |
| 54 | +// TestSliceBoundsNilSafety tests that the analyzer doesn't crash on nil values |
| 55 | +func TestSliceBoundsNilSafety(t *testing.T) { |
| 56 | + t.Run("extractBinOpBound with nil", func(t *testing.T) { |
| 57 | + defer func() { |
| 58 | + if r := recover(); r != nil { |
| 59 | + t.Errorf("extractBinOpBound panicked on nil input: %v", r) |
| 60 | + } |
| 61 | + }() |
| 62 | + _, _, _ = extractBinOpBound(nil) |
| 63 | + }) |
| 64 | + |
| 65 | + t.Run("extractLenBound with nil", func(t *testing.T) { |
| 66 | + defer func() { |
| 67 | + if r := recover(); r != nil { |
| 68 | + t.Errorf("extractLenBound panicked on nil input: %v", r) |
| 69 | + } |
| 70 | + }() |
| 71 | + _, _, _ = extractLenBound(nil) |
| 72 | + }) |
| 73 | + |
| 74 | + t.Run("extractBinOpBound with binop having nil X and Y", func(t *testing.T) { |
| 75 | + defer func() { |
| 76 | + if r := recover(); r != nil { |
| 77 | + t.Errorf("extractBinOpBound panicked on binop with nil X/Y: %v", r) |
| 78 | + } |
| 79 | + }() |
| 80 | + binop := &ssa.BinOp{Op: token.LSS} |
| 81 | + // X and Y are nil by default |
| 82 | + _, _, _ = extractBinOpBound(binop) |
| 83 | + }) |
| 84 | +} |
| 85 | + |
| 86 | +// TestInvBound tests the invBound function |
| 87 | +func TestInvBound(t *testing.T) { |
| 88 | + tests := []struct { |
| 89 | + name string |
| 90 | + input bound |
| 91 | + expected bound |
| 92 | + }{ |
| 93 | + {"lowerUnbounded", lowerUnbounded, upperUnbounded}, |
| 94 | + {"upperUnbounded", upperUnbounded, lowerUnbounded}, |
| 95 | + {"upperBounded", upperBounded, unbounded}, |
| 96 | + {"unbounded", unbounded, upperBounded}, |
| 97 | + {"bounded", bounded, bounded}, |
| 98 | + } |
| 99 | + |
| 100 | + for _, tt := range tests { |
| 101 | + t.Run(tt.name, func(t *testing.T) { |
| 102 | + result := invBound(tt.input) |
| 103 | + if result != tt.expected { |
| 104 | + t.Errorf("invBound(%v) = %v, want %v", tt.input, result, tt.expected) |
| 105 | + } |
| 106 | + }) |
| 107 | + } |
| 108 | +} |
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