1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
import { describe, expect, it } from "vitest";
import { extractVariables, parseTemplate } from "./parser.js";
function vars(entries: ReadonlyArray<[string, string | null]>): Map<string, string | null> {
return new Map(entries);
}
describe("parser", () => {
describe("variable insertion", () => {
it("simple variable insertion", () => {
// 1. [system:time] with value → inserts it
expect(parseTemplate("[system:time]", vars([["system:time", "12:00"]]))).toBe("12:00");
});
it("unknown variable → blank", () => {
// 2. [unknown:foo] not in map → ""
expect(parseTemplate("[unknown:foo]", vars([]))).toBe("");
});
it("null variable → blank", () => {
// 3. [file:missing.md] with value null → ""
expect(parseTemplate("[file:missing.md]", vars([["file:missing.md", null]]))).toBe("");
});
it("inserts value mid-text", () => {
expect(parseTemplate("cwd is [prompt:cwd]!", vars([["prompt:cwd", "/proj"]]))).toBe(
"cwd is /proj!",
);
});
it("non-tag brackets stay literal", () => {
expect(parseTemplate("[not a tag] done", vars([]))).toBe("[not a tag] done");
});
it("unclosed bracket stays literal", () => {
expect(parseTemplate("[file:x", vars([]))).toBe("[file:x");
});
});
describe("conditionals", () => {
it("if block renders when variable exists", () => {
// 4. [if file:AGENTS.md]YES[endif] with value → "YES"
expect(
parseTemplate("[if file:AGENTS.md]YES[endif]", vars([["file:AGENTS.md", "content"]])),
).toBe("YES");
});
it("if block skipped when variable is null", () => {
// 5. same with null → ""
expect(parseTemplate("[if file:AGENTS.md]YES[endif]", vars([["file:AGENTS.md", null]]))).toBe(
"",
);
});
it("if block skipped when variable absent", () => {
expect(parseTemplate("[if file:AGENTS.md]YES[endif]", vars([]))).toBe("");
});
it("if/else renders fallback when null", () => {
// 6. [if file:X]A[else]B[endif] with null → "B"
expect(parseTemplate("[if file:X]A[else]B[endif]", vars([["file:X", null]]))).toBe("B");
});
it("if/else renders then-branch when exists", () => {
expect(parseTemplate("[if file:X]A[else]B[endif]", vars([["file:X", "v"]]))).toBe("A");
});
it("negated if renders when variable is null", () => {
// 7. [if !file:X]A[endif] with null → "A"
expect(parseTemplate("[if !file:X]A[endif]", vars([["file:X", null]]))).toBe("A");
});
it("negated if skipped when variable exists", () => {
expect(parseTemplate("[if !file:X]A[endif]", vars([["file:X", "v"]]))).toBe("");
});
it("negated if renders when variable absent", () => {
expect(parseTemplate("[if !file:X]A[endif]", vars([]))).toBe("A");
});
it("nested if — inner skipped when its var is null", () => {
// 8. [if system:os][if file:X]A[endif][endif] with os=set, file=null → ""
expect(
parseTemplate(
"[if system:os][if file:X]A[endif][endif]",
vars([
["system:os", "linux"],
["file:X", null],
]),
),
).toBe("");
});
it("nested if — inner renders when both exist", () => {
expect(
parseTemplate(
"[if system:os][if file:X]A[endif][endif]",
vars([
["system:os", "linux"],
["file:X", "v"],
]),
),
).toBe("A");
});
it("nested if/else", () => {
expect(
parseTemplate(
"[if system:os]os[if file:X]A[else]B[endif][endif]",
vars([
["system:os", "linux"],
["file:X", null],
]),
),
).toBe("osB");
});
it("unmatched if → literal text", () => {
// 9. [if file:X]text (no endif) → "[if file:X]text"
expect(parseTemplate("[if file:X]text", vars([["file:X", "v"]]))).toBe("[if file:X]text");
});
it("unmatched if with null var still emits literal tag", () => {
expect(parseTemplate("[if file:X]text", vars([["file:X", null]]))).toBe("[if file:X]text");
});
it("stray endif → literal text", () => {
expect(parseTemplate("a[endif]b", vars([]))).toBe("a[endif]b");
});
it("stray else → literal text", () => {
expect(parseTemplate("a[else]b", vars([]))).toBe("a[else]b");
});
it("multi-line content renders correctly", () => {
// 10. if block spanning multiple lines
const template = "[if file:AGENTS.md]line1\nline2\nline3[endif]";
expect(parseTemplate(template, vars([["file:AGENTS.md", "c"]]))).toBe("line1\nline2\nline3");
});
it("multi-line if/else block", () => {
const template = "[if file:X]\nA\n[else]\nB\n[endif]";
expect(parseTemplate(template, vars([["file:X", null]]))).toBe("\nB\n");
});
it("default-template-like structure renders", () => {
const template =
"You are a helpful coding assistant.\n\n[if file:AGENTS.md]\n[file:AGENTS.md]\n[endif]\n\nThe current working directory is [prompt:cwd].\n";
expect(
parseTemplate(
template,
vars([
["file:AGENTS.md", "RULES"],
["prompt:cwd", "/proj"],
]),
),
).toBe(
"You are a helpful coding assistant.\n\n\nRULES\n\n\nThe current working directory is /proj.\n",
);
});
it("default-template-like structure without AGENTS.md", () => {
const template = "[if file:AGENTS.md]\n[file:AGENTS.md]\n[endif]\nThe cwd is [prompt:cwd].";
expect(parseTemplate(template, vars([["prompt:cwd", "/proj"]]))).toBe("\nThe cwd is /proj.");
});
});
describe("extractVariables", () => {
it("collects insertion + condition keys", () => {
const template = "[system:time] [if file:AGENTS.md][file:AGENTS.md][endif] [if !git:branch]";
expect(extractVariables(template)).toEqual(["system:time", "file:AGENTS.md", "git:branch"]);
});
it("deduplicates keys", () => {
expect(extractVariables("[file:X][if file:X][file:X]")).toEqual(["file:X"]);
});
it("returns empty for plain text", () => {
expect(extractVariables("no variables here")).toEqual([]);
});
it("ignores unmatched tags", () => {
expect(extractVariables("[if file:X]no endif")).toEqual(["file:X"]);
});
});
});
|
