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test: add 5 tests for system Python fallback

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Signed-off-by: Bruno Verachten <gounthar@gmail.com>
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Bruno Verachten 2026-03-19 14:43:18 +01:00
parent 02cd31ab13
commit cb5cf223af
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130
__tests__/finder.test.ts
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@ -21,6 +21,7 @@ process.env['RUNNER_TEMP'] = tempDir;
import * as tc from '@actions/tool-cache';
import * as core from '@actions/core';
import * as exec from '@actions/exec';
import * as finder from '../src/find-python';
import * as installer from '../src/install-python';
@ -298,4 +299,133 @@ describe('Finder tests', () => {
expect(spyCoreAddPath).not.toHaveBeenCalled();
expect(spyCoreExportVariable).not.toHaveBeenCalled();
});
describe('System Python fallback', () => {
let execSpy: jest.SpyInstance;
let manifestSpy: jest.SpyInstance;
beforeEach(() => {
// Mock the manifest to return entries only for x64, not riscv64
manifestSpy = jest.spyOn(installer, 'getManifest');
manifestSpy.mockImplementation(
async () => <tc.IToolRelease[]>manifestData
);
});
it('Falls back to system Python on unsupported architecture', async () => {
execSpy = jest.spyOn(exec, 'getExecOutput');
execSpy.mockImplementation(async () => ({
exitCode: 0,
stdout:
'/usr/bin/python3\n3.12.0\n/usr\n/usr/bin\n',
stderr: ''
}));
const result = await finder.useCpythonVersion(
'3.12',
'riscv64',
true,
false,
false,
false
);
expect(result).toEqual({impl: 'CPython', version: '3.12.0'});
expect(spyCoreAddPath).toHaveBeenCalledWith('/usr/bin');
expect(spyCoreExportVariable).toHaveBeenCalledWith(
'pythonLocation',
'/usr'
);
});
it('Does not fall back on supported architecture with missing version', async () => {
// x64 has manifest entries, so fallback should NOT trigger
let thrown = false;
try {
await finder.useCpythonVersion(
'3.300000',
'x64',
true,
false,
false,
false
);
} catch {
thrown = true;
}
expect(thrown).toBeTruthy();
});
it('Does not fall back when system Python version does not match', async () => {
execSpy = jest.spyOn(exec, 'getExecOutput');
execSpy.mockImplementation(async () => ({
exitCode: 0,
stdout:
'/usr/bin/python3\n3.11.5\n/usr\n/usr/bin\n',
stderr: ''
}));
let thrown = false;
try {
await finder.useCpythonVersion(
'3.12',
'riscv64',
true,
false,
false,
false
);
} catch {
thrown = true;
}
expect(thrown).toBeTruthy();
});
it('Does not fall back for freethreaded builds', async () => {
execSpy = jest.spyOn(exec, 'getExecOutput');
execSpy.mockImplementation(async () => ({
exitCode: 0,
stdout:
'/usr/bin/python3\n3.13.0\n/usr\n/usr/bin\n',
stderr: ''
}));
let thrown = false;
try {
await finder.useCpythonVersion(
'3.13t',
'riscv64',
true,
false,
false,
false
);
} catch {
thrown = true;
}
expect(thrown).toBeTruthy();
});
it('Handles missing system Python gracefully', async () => {
execSpy = jest.spyOn(exec, 'getExecOutput');
execSpy.mockImplementation(async () => {
throw new Error('python3 not found');
});
let thrown = false;
try {
await finder.useCpythonVersion(
'3.12',
'riscv64',
true,
false,
false,
false
);
} catch {
thrown = true;
}
expect(thrown).toBeTruthy();
});
});
});