snapshot of https://github.com/grpc/grpc-go.git (master, 2026-09-15; blobs > 131072B omitted)

internal/xds/matcher/string_matcher_test.go

@@ -0,0 +1,349 @@
+/*
+ *
+ * Copyright 2021 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package matcher
+
+import (
+	"regexp"
+	"testing"
+
+	v3matcherpb "github.com/envoyproxy/go-control-plane/envoy/type/matcher/v3"
+	"github.com/google/go-cmp/cmp"
+)
+
+func TestStringMatcherFromProto(t *testing.T) {
+	tests := []struct {
+		desc        string
+		inputProto  *v3matcherpb.StringMatcher
+		wantMatcher StringMatcher
+		wantErr     bool
+	}{
+		{
+			desc:    "nil proto",
+			wantErr: true,
+		},
+		{
+			desc: "empty prefix",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_Prefix{Prefix: ""},
+			},
+			wantErr: true,
+		},
+		{
+			desc: "empty suffix",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_Suffix{Suffix: ""},
+			},
+			wantErr: true,
+		},
+		{
+			desc: "empty contains",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_Contains{Contains: ""},
+			},
+			wantErr: true,
+		},
+		{
+			desc: "invalid regex",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_SafeRegex{
+					SafeRegex: &v3matcherpb.RegexMatcher{Regex: "??"},
+				},
+			},
+			wantErr: true,
+		},
+		{
+			desc: "happy case exact",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_Exact{Exact: "exact"},
+			},
+			wantMatcher: StringMatcher{exactMatch: newStringP("exact")},
+		},
+		{
+			desc: "happy case exact ignore case",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_Exact{Exact: "EXACT"},
+				IgnoreCase:   true,
+			},
+			wantMatcher: StringMatcher{
+				exactMatch: newStringP("exact"),
+				ignoreCase: true,
+			},
+		},
+		{
+			desc: "happy case prefix",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_Prefix{Prefix: "prefix"},
+			},
+			wantMatcher: StringMatcher{prefixMatch: newStringP("prefix")},
+		},
+		{
+			desc: "happy case prefix ignore case",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_Prefix{Prefix: "PREFIX"},
+				IgnoreCase:   true,
+			},
+			wantMatcher: StringMatcher{
+				prefixMatch: newStringP("prefix"),
+				ignoreCase:  true,
+			},
+		},
+		{
+			desc: "happy case suffix",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_Suffix{Suffix: "suffix"},
+			},
+			wantMatcher: StringMatcher{suffixMatch: newStringP("suffix")},
+		},
+		{
+			desc: "happy case suffix ignore case",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_Suffix{Suffix: "SUFFIX"},
+				IgnoreCase:   true,
+			},
+			wantMatcher: StringMatcher{
+				suffixMatch: newStringP("suffix"),
+				ignoreCase:  true,
+			},
+		},
+		{
+			desc: "happy case regex",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_SafeRegex{
+					SafeRegex: &v3matcherpb.RegexMatcher{Regex: "good?regex?"},
+				},
+			},
+			wantMatcher: StringMatcher{regexMatch: regexp.MustCompile("^(?:good?regex?)$")},
+		},
+		{
+			desc: "regex with ignore case",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_SafeRegex{
+					SafeRegex: &v3matcherpb.RegexMatcher{Regex: "good?regex?"},
+				},
+				IgnoreCase: true,
+			},
+			wantMatcher: StringMatcher{
+				regexMatch: regexp.MustCompile("^(?:good?regex?)$"),
+			},
+		},
+		{
+			desc: "happy case contains",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_Contains{Contains: "contains"},
+			},
+			wantMatcher: StringMatcher{containsMatch: newStringP("contains")},
+		},
+		{
+			desc: "happy case contains ignore case",
+			inputProto: &v3matcherpb.StringMatcher{
+				MatchPattern: &v3matcherpb.StringMatcher_Contains{Contains: "CONTAINS"},
+				IgnoreCase:   true,
+			},
+			wantMatcher: StringMatcher{
+				containsMatch: newStringP("contains"),
+				ignoreCase:    true,
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.desc, func(t *testing.T) {
+			gotMatcher, err := StringMatcherFromProto(test.inputProto)
+			if (err != nil) != test.wantErr {
+				t.Fatalf("StringMatcherFromProto(%+v) returned err: %v, wantErr: %v", test.inputProto, err, test.wantErr)
+			}
+			if diff := cmp.Diff(gotMatcher, test.wantMatcher, cmp.AllowUnexported(regexp.Regexp{})); diff != "" {
+				t.Fatalf("StringMatcherFromProto(%+v) returned unexpected diff (-got, +want):\n%s", test.inputProto, diff)
+			}
+		})
+	}
+}
+
+func TestMatch(t *testing.T) {
+	var (
+		exactMatcher              = NewExactStringMatcher("exact", false)
+		exactMatcherIgnoreCase    = NewExactStringMatcher("exact", true)
+		prefixMatcher             = NewPrefixStringMatcher("prefix", false)
+		prefixMatcherIgnoreCase   = NewPrefixStringMatcher("prefix", true)
+		suffixMatcher             = NewSuffixStringMatcher("suffix", false)
+		suffixMatcherIgnoreCase   = NewSuffixStringMatcher("suffix", true)
+		containsMatcher           = NewContainsStringMatcher("contains", false)
+		containsMatcherIgnoreCase = NewContainsStringMatcher("contains", true)
+		regexMatcher              = NewRegexStringMatcher(regexp.MustCompile("^(?:good?regex?)$"))
+	)
+
+	tests := []struct {
+		desc      string
+		matcher   StringMatcher
+		input     string
+		wantMatch bool
+	}{
+		{
+			desc:      "exact match success",
+			matcher:   exactMatcher,
+			input:     "exact",
+			wantMatch: true,
+		},
+		{
+			desc:    "exact match failure",
+			matcher: exactMatcher,
+			input:   "not-exact",
+		},
+		{
+			desc:      "exact match success with ignore case",
+			matcher:   exactMatcherIgnoreCase,
+			input:     "EXACT",
+			wantMatch: true,
+		},
+		{
+			desc:    "exact match failure with ignore case",
+			matcher: exactMatcherIgnoreCase,
+			input:   "not-exact",
+		},
+		{
+			desc:      "prefix match success",
+			matcher:   prefixMatcher,
+			input:     "prefixIsHere",
+			wantMatch: true,
+		},
+		{
+			desc:    "prefix match failure",
+			matcher: prefixMatcher,
+			input:   "not-prefix",
+		},
+		{
+			desc:      "prefix match success with ignore case",
+			matcher:   prefixMatcherIgnoreCase,
+			input:     "PREFIXisHere",
+			wantMatch: true,
+		},
+		{
+			desc:    "prefix match failure with ignore case",
+			matcher: prefixMatcherIgnoreCase,
+			input:   "not-PREFIX",
+		},
+		{
+			desc:      "suffix match success",
+			matcher:   suffixMatcher,
+			input:     "hereIsThesuffix",
+			wantMatch: true,
+		},
+		{
+			desc:    "suffix match failure",
+			matcher: suffixMatcher,
+			input:   "suffix-is-not-here",
+		},
+		{
+			desc:      "suffix match success with ignore case",
+			matcher:   suffixMatcherIgnoreCase,
+			input:     "hereIsTheSuFFix",
+			wantMatch: true,
+		},
+		{
+			desc:    "suffix match failure with ignore case",
+			matcher: suffixMatcherIgnoreCase,
+			input:   "SUFFIX-is-not-here",
+		},
+		{
+			desc:      "regex match success",
+			matcher:   regexMatcher,
+			input:     "goodregex",
+			wantMatch: true,
+		},
+		{
+			desc:      "regex match failure because only part match",
+			matcher:   regexMatcher,
+			input:     "goodregexa",
+			wantMatch: false,
+		},
+		{
+			desc:    "regex match failure",
+			matcher: regexMatcher,
+			input:   "regex-is-not-here",
+		},
+		{
+			desc:      "contains match success",
+			matcher:   containsMatcher,
+			input:     "IScontainsHERE",
+			wantMatch: true,
+		},
+		{
+			desc:    "contains match failure",
+			matcher: containsMatcher,
+			input:   "con-tains-is-not-here",
+		},
+		{
+			desc:      "contains match success with ignore case",
+			matcher:   containsMatcherIgnoreCase,
+			input:     "isCONTAINShere",
+			wantMatch: true,
+		},
+		{
+			desc:    "contains match failure with ignore case",
+			matcher: containsMatcherIgnoreCase,
+			input:   "CON-TAINS-is-not-here",
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.desc, func(t *testing.T) {
+			if gotMatch := test.matcher.Match(test.input); gotMatch != test.wantMatch {
+				t.Errorf("StringMatcher.Match(%s) returned %v, want %v", test.input, gotMatch, test.wantMatch)
+			}
+		})
+	}
+}
+
+func newStringP(s string) *string {
+	return &s
+}
+
+func TestCompileSafeRegex(t *testing.T) {
+	tests := []struct {
+		desc      string
+		pattern   string
+		wantRegex string
+		wantErr   bool
+	}{
+		{
+			desc:      "ValidPattern",
+			pattern:   "abc",
+			wantRegex: "^(?:abc)$",
+		},
+		{
+			desc:    "UnmatchedParenthesis",
+			pattern: "abc(",
+			wantErr: true,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.desc, func(t *testing.T) {
+			re, err := CompileSafeRegex(test.pattern)
+			if (err != nil) != test.wantErr {
+				t.Fatalf("CompileSafeRegex(%q) returned error %q, wantErr=%v", test.pattern, err, test.wantErr)
+			}
+			if err == nil {
+				if re.String() != test.wantRegex {
+					t.Fatalf("CompileSafeRegex(%q) = %q, want %q", test.pattern, re.String(), test.wantRegex)
+				}
+			}
+		})
+	}
+}