added wildcard test

gjson_test.go

@@ -313,6 +313,312 @@ func TestUnicode(t *testing.T) {
 		t.Fatal("fail")
 	}
 }
+
+// TestWildcardMatch - Tests validate the logic of wild card matching.
+// `WildcardMatch` supports '*' and '?' wildcards.
+// Sample usage: In resource matching for folder policy validation.
+func TestWildcardMatch(t *testing.T) {
+	testCases := []struct {
+		pattern string
+		text    string
+		matched bool
+	}{
+		// Test case - 1.
+		// Test case with pattern containing key name with a prefix. Should accept the same text without a "*".
+		{
+			pattern: "my-folder/oo*",
+			text:    "my-folder/oo",
+			matched: true,
+		},
+		// Test case - 2.
+		// Test case with "*" at the end of the pattern.
+		{
+			pattern: "my-folder/In*",
+			text:    "my-folder/India/Karnataka/",
+			matched: true,
+		},
+		// Test case - 3.
+		// Test case with prefixes shuffled.
+		// This should fail.
+		{
+			pattern: "my-folder/In*",
+			text:    "my-folder/Karnataka/India/",
+			matched: false,
+		},
+		// Test case - 4.
+		// Test case with text expanded to the wildcards in the pattern.
+		{
+			pattern: "my-folder/In*/Ka*/Ban",
+			text:    "my-folder/India/Karnataka/Ban",
+			matched: true,
+		},
+		// Test case - 5.
+		// Test case with the  keyname part is repeated as prefix several times.
+		// This is valid.
+		{
+			pattern: "my-folder/In*/Ka*/Ban",
+			text:    "my-folder/India/Karnataka/Ban/Ban/Ban/Ban/Ban",
+			matched: true,
+		},
+		// Test case - 6.
+		// Test case to validate that `*` can be expanded into multiple prefixes.
+		{
+			pattern: "my-folder/In*/Ka*/Ban",
+			text:    "my-folder/India/Karnataka/Area1/Area2/Area3/Ban",
+			matched: true,
+		},
+		// Test case - 7.
+		// Test case to validate that `*` can be expanded into multiple prefixes.
+		{
+			pattern: "my-folder/In*/Ka*/Ban",
+			text:    "my-folder/India/State1/State2/Karnataka/Area1/Area2/Area3/Ban",
+			matched: true,
+		},
+		// Test case - 8.
+		// Test case where the keyname part of the pattern is expanded in the text.
+		{
+			pattern: "my-folder/In*/Ka*/Ban",
+			text:    "my-folder/India/Karnataka/Bangalore",
+			matched: false,
+		},
+		// Test case - 9.
+		// Test case with prefixes and wildcard expanded for all "*".
+		{
+			pattern: "my-folder/In*/Ka*/Ban*",
+			text:    "my-folder/India/Karnataka/Bangalore",
+			matched: true,
+		},
+		// Test case - 10.
+		// Test case with keyname part being a wildcard in the pattern.
+		{pattern: "my-folder/*",
+			text:    "my-folder/India",
+			matched: true,
+		},
+		// Test case - 11.
+		{
+			pattern: "my-folder/oo*",
+			text:    "my-folder/odo",
+			matched: false,
+		},
+
+		// Test case with pattern containing wildcard '?'.
+		// Test case - 12.
+		// "my-folder?/" matches "my-folder1/", "my-folder2/", "my-folder3" etc...
+		// doesn't match "myfolder/".
+		{
+			pattern: "my-folder?/abc*",
+			text:    "myfolder/abc",
+			matched: false,
+		},
+		// Test case - 13.
+		{
+			pattern: "my-folder?/abc*",
+			text:    "my-folder1/abc",
+			matched: true,
+		},
+		// Test case - 14.
+		{
+			pattern: "my-?-folder/abc*",
+			text:    "my--folder/abc",
+			matched: false,
+		},
+		// Test case - 15.
+		{
+			pattern: "my-?-folder/abc*",
+			text:    "my-1-folder/abc",
+			matched: true,
+		},
+		// Test case - 16.
+		{
+			pattern: "my-?-folder/abc*",
+			text:    "my-k-folder/abc",
+			matched: true,
+		},
+		// Test case - 17.
+		{
+			pattern: "my??folder/abc*",
+			text:    "myfolder/abc",
+			matched: false,
+		},
+		// Test case - 18.
+		{
+			pattern: "my??folder/abc*",
+			text:    "my4afolder/abc",
+			matched: true,
+		},
+		// Test case - 19.
+		{
+			pattern: "my-folder?abc*",
+			text:    "my-folder/abc",
+			matched: true,
+		},
+		// Test case 20-21.
+		// '?' matches '/' too. (works with s3).
+		// This is because the namespace is considered flat.
+		// "abc?efg" matches both "abcdefg" and "abc/efg".
+		{
+			pattern: "my-folder/abc?efg",
+			text:    "my-folder/abcdefg",
+			matched: true,
+		},
+		{
+			pattern: "my-folder/abc?efg",
+			text:    "my-folder/abc/efg",
+			matched: true,
+		},
+		// Test case - 22.
+		{
+			pattern: "my-folder/abc????",
+			text:    "my-folder/abc",
+			matched: false,
+		},
+		// Test case - 23.
+		{
+			pattern: "my-folder/abc????",
+			text:    "my-folder/abcde",
+			matched: false,
+		},
+		// Test case - 24.
+		{
+			pattern: "my-folder/abc????",
+			text:    "my-folder/abcdefg",
+			matched: true,
+		},
+		// Test case 25-26.
+		// test case with no '*'.
+		{
+			pattern: "my-folder/abc?",
+			text:    "my-folder/abc",
+			matched: false,
+		},
+		{
+			pattern: "my-folder/abc?",
+			text:    "my-folder/abcd",
+			matched: true,
+		},
+		{
+			pattern: "my-folder/abc?",
+			text:    "my-folder/abcde",
+			matched: false,
+		},
+		// Test case 27.
+		{
+			pattern: "my-folder/mnop*?",
+			text:    "my-folder/mnop",
+			matched: false,
+		},
+		// Test case 28.
+		{
+			pattern: "my-folder/mnop*?",
+			text:    "my-folder/mnopqrst/mnopqr",
+			matched: true,
+		},
+		// Test case 29.
+		{
+			pattern: "my-folder/mnop*?",
+			text:    "my-folder/mnopqrst/mnopqrs",
+			matched: true,
+		},
+		// Test case 30.
+		{
+			pattern: "my-folder/mnop*?",
+			text:    "my-folder/mnop",
+			matched: false,
+		},
+		// Test case 31.
+		{
+			pattern: "my-folder/mnop*?",
+			text:    "my-folder/mnopq",
+			matched: true,
+		},
+		// Test case 32.
+		{
+			pattern: "my-folder/mnop*?",
+			text:    "my-folder/mnopqr",
+			matched: true,
+		},
+		// Test case 33.
+		{
+			pattern: "my-folder/mnop*?and",
+			text:    "my-folder/mnopqand",
+			matched: true,
+		},
+		// Test case 34.
+		{
+			pattern: "my-folder/mnop*?and",
+			text:    "my-folder/mnopand",
+			matched: false,
+		},
+		// Test case 35.
+		{
+			pattern: "my-folder/mnop*?and",
+			text:    "my-folder/mnopqand",
+			matched: true,
+		},
+		// Test case 36.
+		{
+			pattern: "my-folder/mnop*?",
+			text:    "my-folder/mn",
+			matched: false,
+		},
+		// Test case 37.
+		{
+			pattern: "my-folder/mnop*?",
+			text:    "my-folder/mnopqrst/mnopqrs",
+			matched: true,
+		},
+		// Test case 38.
+		{
+			pattern: "my-folder/mnop*??",
+			text:    "my-folder/mnopqrst",
+			matched: true,
+		},
+		// Test case 39.
+		{
+			pattern: "my-folder/mnop*qrst",
+			text:    "my-folder/mnopabcdegqrst",
+			matched: true,
+		},
+		// Test case 40.
+		{
+			pattern: "my-folder/mnop*?and",
+			text:    "my-folder/mnopqand",
+			matched: true,
+		},
+		// Test case 41.
+		{
+			pattern: "my-folder/mnop*?and",
+			text:    "my-folder/mnopand",
+			matched: false,
+		},
+		// Test case 42.
+		{
+			pattern: "my-folder/mnop*?and?",
+			text:    "my-folder/mnopqanda",
+			matched: true,
+		},
+		// Test case 43.
+		{
+			pattern: "my-folder/mnop*?and",
+			text:    "my-folder/mnopqanda",
+			matched: false,
+		},
+		// Test case 44.
+
+		{
+			pattern: "my-?-folder/abc*",
+			text:    "my-folder/mnopqanda",
+			matched: false,
+		},
+	}
+	// Iterating over the test cases, call the function under test and asert the output.
+	for i, testCase := range testCases {
+		actualResult := wildcardMatch(testCase.text, testCase.pattern, false)
+		if testCase.matched != actualResult {
+			t.Errorf("Test %d: Expected the result to be `%v`, but instead found it to be `%v`", i+1, testCase.matched, actualResult)
+		}
+	}
+}
 func TestUnescape(t *testing.T) {
 	unescape(string([]byte{'\\', '\\', 0}))
 	unescape(string([]byte{'\\', '/', '\\', 'b', '\\', 'f'}))