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v/cmd/tools/preludes/tests_with_stats.v

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module main
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// /////////////////////////////////////////////////////////////////////
// / This file will get compiled as a part of the same module,
// / in which a given _test.v file is, when v is given -stats argument
// / The methods defined here are called back by the test program's
// / main function, so that customizing the look & feel of the results
// / is easy, since it is done in normal V code, instead of in embedded C ...
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// /////////////////////////////////////////////////////////////////////
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import os
import benchmark
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const (
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inner_indent = ' '
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)
struct BenchedTests {
mut:
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bench benchmark.Benchmark
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oks int
fails int
test_suit_file string
step_func_name string
}
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// ///////////////////////////////////////////////////////////////////
// Called at the start of the test program produced by `v -stats file_test.v`
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fn start_testing(total_number_of_tests int, vfilename string) BenchedTests {
mut b := BenchedTests{
bench: benchmark.new_benchmark()
}
b.bench.set_total_expected_steps(total_number_of_tests)
b.test_suit_file = vfilename
println('running tests in: $b.test_suit_file')
return b
}
// Called before each test_ function, defined in file_test.v
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fn (mut b BenchedTests) testing_step_start(stepfunc string) {
b.step_func_name = stepfunc.replace('main.', '').replace('__', '.')
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b.oks = C.g_test_oks
b.fails = C.g_test_fails
b.bench.step()
}
// Called after each test_ function, defined in file_test.v
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fn (mut b BenchedTests) testing_step_end() {
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ok_diff := C.g_test_oks - b.oks
fail_diff := C.g_test_fails - b.fails
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// ////////////////////////////////////////////////////////////////
if ok_diff == 0 && fail_diff == 0 {
b.bench.neither_fail_nor_ok()
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println(inner_indent + b.bench.step_message_ok(' NO asserts | ') + b.fn_name())
return
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}
// ////////////////////////////////////////////////////////////////
if ok_diff > 0 {
b.bench.ok_many(ok_diff)
}
if fail_diff > 0 {
b.bench.fail_many(fail_diff)
}
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// ////////////////////////////////////////////////////////////////
if ok_diff > 0 && fail_diff == 0 {
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println(inner_indent + b.bench.step_message_ok(nasserts(ok_diff)) + b.fn_name())
return
}
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if fail_diff > 0 {
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println(inner_indent + b.bench.step_message_fail(nasserts(fail_diff)) + b.fn_name())
return
}
}
fn (b &BenchedTests) fn_name() string {
return b.step_func_name + '()'
}
// Called at the end of the test program produced by `v -stats file_test.v`
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fn (mut b BenchedTests) end_testing() {
b.bench.stop()
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println(inner_indent + b.bench.total_message('running V tests in "' + os.file_name(b.test_suit_file) + '"'))
}
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// ///////////////////////////////////////////////////////////////////
fn nasserts(n int) string {
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if n == 1 {
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return '${n:5d} assert | '
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}
return '${n:5d} asserts | '
}