1 package jmespath
2
3 import (
4 "fmt"
5 "testing"
6
7 "github.com/jmespath/go-jmespath/internal/testify/assert"
8 )
9
10 var lexingTests = []struct {
11 expression string
12 expected []token
13 }{
14 {"*", []token{{tStar, "*", 0, 1}}},
15 {".", []token{{tDot, ".", 0, 1}}},
16 {"[?", []token{{tFilter, "[?", 0, 2}}},
17 {"[]", []token{{tFlatten, "[]", 0, 2}}},
18 {"(", []token{{tLparen, "(", 0, 1}}},
19 {")", []token{{tRparen, ")", 0, 1}}},
20 {"[", []token{{tLbracket, "[", 0, 1}}},
21 {"]", []token{{tRbracket, "]", 0, 1}}},
22 {"{", []token{{tLbrace, "{", 0, 1}}},
23 {"}", []token{{tRbrace, "}", 0, 1}}},
24 {"||", []token{{tOr, "||", 0, 2}}},
25 {"|", []token{{tPipe, "|", 0, 1}}},
26 {"29", []token{{tNumber, "29", 0, 2}}},
27 {"2", []token{{tNumber, "2", 0, 1}}},
28 {"0", []token{{tNumber, "0", 0, 1}}},
29 {"-20", []token{{tNumber, "-20", 0, 3}}},
30 {"foo", []token{{tUnquotedIdentifier, "foo", 0, 3}}},
31 {`"bar"`, []token{{tQuotedIdentifier, "bar", 0, 3}}},
32
33 {`"bar\"baz"`, []token{{tQuotedIdentifier, `bar"baz`, 0, 7}}},
34 {",", []token{{tComma, ",", 0, 1}}},
35 {":", []token{{tColon, ":", 0, 1}}},
36 {"<", []token{{tLT, "<", 0, 1}}},
37 {"<=", []token{{tLTE, "<=", 0, 2}}},
38 {">", []token{{tGT, ">", 0, 1}}},
39 {">=", []token{{tGTE, ">=", 0, 2}}},
40 {"==", []token{{tEQ, "==", 0, 2}}},
41 {"!=", []token{{tNE, "!=", 0, 2}}},
42 {"`[0, 1, 2]`", []token{{tJSONLiteral, "[0, 1, 2]", 1, 9}}},
43 {"'foo'", []token{{tStringLiteral, "foo", 1, 3}}},
44 {"'a'", []token{{tStringLiteral, "a", 1, 1}}},
45 {`'foo\'bar'`, []token{{tStringLiteral, "foo'bar", 1, 7}}},
46 {"@", []token{{tCurrent, "@", 0, 1}}},
47 {"&", []token{{tExpref, "&", 0, 1}}},
48
49 {`"\u2713"`, []token{{tQuotedIdentifier, "✓", 0, 3}}},
50 {`"\\"`, []token{{tQuotedIdentifier, `\`, 0, 1}}},
51 {"`\"foo\"`", []token{{tJSONLiteral, "\"foo\"", 1, 5}}},
52
53 {"foo.bar", []token{
54 {tUnquotedIdentifier, "foo", 0, 3},
55 {tDot, ".", 3, 1},
56 {tUnquotedIdentifier, "bar", 4, 3},
57 }},
58 {"foo[0]", []token{
59 {tUnquotedIdentifier, "foo", 0, 3},
60 {tLbracket, "[", 3, 1},
61 {tNumber, "0", 4, 1},
62 {tRbracket, "]", 5, 1},
63 }},
64 {"foo[?a<b]", []token{
65 {tUnquotedIdentifier, "foo", 0, 3},
66 {tFilter, "[?", 3, 2},
67 {tUnquotedIdentifier, "a", 5, 1},
68 {tLT, "<", 6, 1},
69 {tUnquotedIdentifier, "b", 7, 1},
70 {tRbracket, "]", 8, 1},
71 }},
72 }
73
74 func TestCanLexTokens(t *testing.T) {
75 assert := assert.New(t)
76 lexer := NewLexer()
77 for _, tt := range lexingTests {
78 tokens, err := lexer.tokenize(tt.expression)
79 if assert.Nil(err) {
80 errMsg := fmt.Sprintf("Mismatch expected number of tokens: (expected: %s, actual: %s)",
81 tt.expected, tokens)
82 tt.expected = append(tt.expected, token{tEOF, "", len(tt.expression), 0})
83 if assert.Equal(len(tt.expected), len(tokens), errMsg) {
84 for i, token := range tokens {
85 expected := tt.expected[i]
86 assert.Equal(expected, token, "Token not equal")
87 }
88 }
89 }
90 }
91 }
92
93 var lexingErrorTests = []struct {
94 expression string
95 msg string
96 }{
97 {"'foo", "Missing closing single quote"},
98 {"[?foo==bar?]", "Unknown char '?'"},
99 }
100
101 func TestLexingErrors(t *testing.T) {
102 assert := assert.New(t)
103 lexer := NewLexer()
104 for _, tt := range lexingErrorTests {
105 _, err := lexer.tokenize(tt.expression)
106 assert.NotNil(err, fmt.Sprintf("Expected lexing error: %s", tt.msg))
107 }
108 }
109
110 var exprIdentifier = "abcdefghijklmnopqrstuvwxyz"
111 var exprSubexpr = "abcdefghijklmnopqrstuvwxyz.abcdefghijklmnopqrstuvwxyz"
112 var deeplyNested50 = "j49.j48.j47.j46.j45.j44.j43.j42.j41.j40.j39.j38.j37.j36.j35.j34.j33.j32.j31.j30.j29.j28.j27.j26.j25.j24.j23.j22.j21.j20.j19.j18.j17.j16.j15.j14.j13.j12.j11.j10.j9.j8.j7.j6.j5.j4.j3.j2.j1.j0"
113 var deeplyNested50Pipe = "j49|j48|j47|j46|j45|j44|j43|j42|j41|j40|j39|j38|j37|j36|j35|j34|j33|j32|j31|j30|j29|j28|j27|j26|j25|j24|j23|j22|j21|j20|j19|j18|j17|j16|j15|j14|j13|j12|j11|j10|j9|j8|j7|j6|j5|j4|j3|j2|j1|j0"
114 var deeplyNested50Index = "[49][48][47][46][45][44][43][42][41][40][39][38][37][36][35][34][33][32][31][30][29][28][27][26][25][24][23][22][21][20][19][18][17][16][15][14][13][12][11][10][9][8][7][6][5][4][3][2][1][0]"
115 var deepProjection104 = "a[*].b[*].c[*].d[*].e[*].f[*].g[*].h[*].i[*].j[*].k[*].l[*].m[*].n[*].o[*].p[*].q[*].r[*].s[*].t[*].u[*].v[*].w[*].x[*].y[*].z[*].a[*].b[*].c[*].d[*].e[*].f[*].g[*].h[*].i[*].j[*].k[*].l[*].m[*].n[*].o[*].p[*].q[*].r[*].s[*].t[*].u[*].v[*].w[*].x[*].y[*].z[*].a[*].b[*].c[*].d[*].e[*].f[*].g[*].h[*].i[*].j[*].k[*].l[*].m[*].n[*].o[*].p[*].q[*].r[*].s[*].t[*].u[*].v[*].w[*].x[*].y[*].z[*].a[*].b[*].c[*].d[*].e[*].f[*].g[*].h[*].i[*].j[*].k[*].l[*].m[*].n[*].o[*].p[*].q[*].r[*].s[*].t[*].u[*].v[*].w[*].x[*].y[*].z[*]"
116 var exprQuotedIdentifier = `"abcdefghijklmnopqrstuvwxyz.abcdefghijklmnopqrstuvwxyz"`
117 var quotedIdentifierEscapes = `"\n\r\b\t\n\r\b\t\n\r\b\t\n\r\b\t\n\r\b\t\n\r\b\t\n\r\b\t"`
118 var rawStringLiteral = `'abcdefghijklmnopqrstuvwxyz.abcdefghijklmnopqrstuvwxyz'`
119
120 func BenchmarkLexIdentifier(b *testing.B) {
121 runLexBenchmark(b, exprIdentifier)
122 }
123
124 func BenchmarkLexSubexpression(b *testing.B) {
125 runLexBenchmark(b, exprSubexpr)
126 }
127
128 func BenchmarkLexDeeplyNested50(b *testing.B) {
129 runLexBenchmark(b, deeplyNested50)
130 }
131
132 func BenchmarkLexDeepNested50Pipe(b *testing.B) {
133 runLexBenchmark(b, deeplyNested50Pipe)
134 }
135
136 func BenchmarkLexDeepNested50Index(b *testing.B) {
137 runLexBenchmark(b, deeplyNested50Index)
138 }
139
140 func BenchmarkLexQuotedIdentifier(b *testing.B) {
141 runLexBenchmark(b, exprQuotedIdentifier)
142 }
143
144 func BenchmarkLexQuotedIdentifierEscapes(b *testing.B) {
145 runLexBenchmark(b, quotedIdentifierEscapes)
146 }
147
148 func BenchmarkLexRawStringLiteral(b *testing.B) {
149 runLexBenchmark(b, rawStringLiteral)
150 }
151
152 func BenchmarkLexDeepProjection104(b *testing.B) {
153 runLexBenchmark(b, deepProjection104)
154 }
155
156 func runLexBenchmark(b *testing.B, expression string) {
157 assert := assert.New(b)
158 lexer := NewLexer()
159 for i := 0; i < b.N; i++ {
160 _, err := lexer.tokenize(expression)
161 if err != nil {
162 assert.Fail("Could not lex expression")
163 }
164 }
165 }
166
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