File size: 6,581 Bytes
077865a
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
import { describe, it, expect } from 'vitest';
import { sanitizeForGemini } from '../../providers/google.js';

describe('sanitizeForGemini', () => {
  it('strips top-level JSON-Schema-only fields that Google rejects', () => {
    const input = {
      $schema: 'https://json-schema.org/draft/2020-12/schema',
      $id: 'http://example.com/foo.json',
      type: 'object',
      properties: { name: { type: 'string' } },
    };
    expect(sanitizeForGemini(input)).toEqual({
      type: 'object',
      properties: { name: { type: 'string' } },
    });
  });

  it('strips exclusiveMinimum / exclusiveMaximum recursively in nested properties', () => {
    const input = {
      type: 'object',
      properties: {
        temp_threshold: { type: 'number', exclusiveMinimum: 0, exclusiveMaximum: 100 },
        nested: {
          type: 'object',
          properties: {
            count: { type: 'integer', exclusiveMinimum: 1 },
          },
        },
      },
    };
    expect(sanitizeForGemini(input)).toEqual({
      type: 'object',
      properties: {
        temp_threshold: { type: 'number' },
        nested: {
          type: 'object',
          properties: {
            count: { type: 'integer' },
          },
        },
      },
    });
  });

  it('walks through arrays (e.g. anyOf branches)', () => {
    const input = {
      anyOf: [
        { type: 'string', $ref: '#/definitions/foo' },
        { type: 'number', exclusiveMinimum: 0 },
      ],
    };
    expect(sanitizeForGemini(input)).toEqual({
      anyOf: [
        { type: 'string' },
        { type: 'number' },
      ],
    });
  });

  it('removes $defs / definitions / patternProperties / if-then-else', () => {
    const input = {
      type: 'object',
      $defs: { Foo: { type: 'string' } },
      definitions: { Bar: { type: 'integer' } },
      patternProperties: { '^x-': { type: 'string' } },
      if: { properties: { kind: { const: 'A' } } },
      then: { required: ['extra'] },
      else: { required: [] },
      properties: { kind: { type: 'string' } },
    };
    expect(sanitizeForGemini(input)).toEqual({
      type: 'object',
      properties: { kind: { type: 'string' } },
    });
  });

  it('passes through supported OpenAPI fields untouched', () => {
    const input = {
      type: 'object',
      description: 'A tool input',
      required: ['city'],
      properties: {
        city: { type: 'string', description: 'City name', enum: ['Karachi', 'Lahore'] },
        items: { type: 'array', items: { type: 'string' }, minItems: 1, maxItems: 10 },
      },
    };
    expect(sanitizeForGemini(input)).toEqual(input);
  });

  it('strips additionalProperties (Gemini rejects it with 400)', () => {
    const input = {
      type: 'object',
      properties: {
        name: { type: 'string' },
        address: {
          type: 'object',
          properties: { street: { type: 'string' } },
          additionalProperties: false,
        },
      },
      additionalProperties: false,
    };
    expect(sanitizeForGemini(input)).toEqual({
      type: 'object',
      properties: {
        name: { type: 'string' },
        address: {
          type: 'object',
          properties: { street: { type: 'string' } },
        },
      },
    });
  });

  it('handles primitives and null safely', () => {
    expect(sanitizeForGemini(null)).toBe(null);
    expect(sanitizeForGemini(undefined)).toBe(undefined);
    expect(sanitizeForGemini('hello')).toBe('hello');
    expect(sanitizeForGemini(42)).toBe(42);
    expect(sanitizeForGemini(true)).toBe(true);
  });

  it('strips examples / const / readOnly / writeOnly (Gemini rejects all with 400)', () => {
    // These fields are emitted by Zod, Pydantic, and most JSON-Schema generators
    // (used by opencode, Continue, Cline tool definitions) but rejected by Google's
    // Gemini and Gemma 4 IT generateContent endpoint with "Invalid JSON payload
    // received. Unknown name 'X' at tools[0].function_declarations[0].parameters".
    const input = {
      type: 'object',
      properties: {
        command: {
          type: 'string',
          description: 'Shell command to execute',
          examples: ['ls -la', 'pwd'],
          readOnly: false,
        },
        mode: { type: 'string', const: 'sync' },
        secret: { type: 'string', writeOnly: true },
      },
      required: ['command'],
    };
    expect(sanitizeForGemini(input)).toEqual({
      type: 'object',
      properties: {
        command: { type: 'string', description: 'Shell command to execute' },
        mode: { type: 'string' },
        secret: { type: 'string' },
      },
      required: ['command'],
    });
  });

  it('strips uniqueItems (Gemini rejects arrays with uniqueItems with 400)', () => {
    // Confirmed via live Google AI Studio call:
    // "Invalid JSON payload received. Unknown name 'uniqueItems' at
    //  'tools[0].function_declarations[0].parameters.properties[2].value':
    //  Cannot find field."
    const input = {
      type: 'object',
      properties: {
        files: {
          type: 'array',
          items: { type: 'string' },
          uniqueItems: true,
          minItems: 0,
          maxItems: 10,
        },
      },
    };
    expect(sanitizeForGemini(input)).toEqual({
      type: 'object',
      properties: {
        files: {
          type: 'array',
          items: { type: 'string' },
          minItems: 0,
          maxItems: 10,
        },
      },
    });
  });

  it('strips composition / structural keywords absent from Google Schema proto', () => {
    // not / allOf / oneOf / prefixItems / contains / propertyNames / multipleOf /
    // dependencies / deprecated are all absent from Google's Schema proto
    // (https://ai.google.dev/api/caching#Schema). Only anyOf is supported.
    const input = {
      type: 'object',
      not: { type: 'null' },
      allOf: [{ type: 'object' }],
      oneOf: [{ type: 'string' }, { type: 'number' }],
      dependencies: { a: ['b'] },
      deprecated: true,
      properties: {
        tuple: { type: 'array', prefixItems: [{ type: 'string' }] },
        bag: { type: 'array', contains: { type: 'string' }, minContains: 1, maxContains: 5 },
        names: { type: 'object', propertyNames: { pattern: '^x_' } },
        count: { type: 'number', multipleOf: 0.5 },
      },
    };
    expect(sanitizeForGemini(input)).toEqual({
      type: 'object',
      properties: {
        tuple: { type: 'array' },
        bag: { type: 'array' },
        names: { type: 'object' },
        count: { type: 'number' },
      },
    });
  });
});