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-rw-r--r--tests/unit/test-qdist.c389
1 files changed, 389 insertions, 0 deletions
diff --git a/tests/unit/test-qdist.c b/tests/unit/test-qdist.c
new file mode 100644
index 0000000000..9541ce31eb
--- /dev/null
+++ b/tests/unit/test-qdist.c
@@ -0,0 +1,389 @@
+/*
+ * Copyright (C) 2016, Emilio G. Cota <cota@braap.org>
+ *
+ * License: GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#include "qemu/osdep.h"
+#include "qemu/qdist.h"
+
+#include <math.h>
+
+struct entry_desc {
+ double x;
+ unsigned long count;
+
+ /* 0 prints a space, 1-8 prints from qdist_blocks[] */
+ int fill_code;
+};
+
+/* See: https://en.wikipedia.org/wiki/Block_Elements */
+static const gunichar qdist_blocks[] = {
+ 0x2581,
+ 0x2582,
+ 0x2583,
+ 0x2584,
+ 0x2585,
+ 0x2586,
+ 0x2587,
+ 0x2588
+};
+
+#define QDIST_NR_BLOCK_CODES ARRAY_SIZE(qdist_blocks)
+
+static char *pr_hist(const struct entry_desc *darr, size_t n)
+{
+ GString *s = g_string_new("");
+ size_t i;
+
+ for (i = 0; i < n; i++) {
+ int fill = darr[i].fill_code;
+
+ if (fill) {
+ assert(fill <= QDIST_NR_BLOCK_CODES);
+ g_string_append_unichar(s, qdist_blocks[fill - 1]);
+ } else {
+ g_string_append_c(s, ' ');
+ }
+ }
+ return g_string_free(s, FALSE);
+}
+
+static void
+histogram_check(const struct qdist *dist, const struct entry_desc *darr,
+ size_t n, size_t n_bins)
+{
+ char *pr = qdist_pr_plain(dist, n_bins);
+ char *str = pr_hist(darr, n);
+
+ g_assert_cmpstr(pr, ==, str);
+ g_free(pr);
+ g_free(str);
+}
+
+static void histogram_check_single_full(const struct qdist *dist, size_t n_bins)
+{
+ struct entry_desc desc = { .fill_code = 8 };
+
+ histogram_check(dist, &desc, 1, n_bins);
+}
+
+static void
+entries_check(const struct qdist *dist, const struct entry_desc *darr, size_t n)
+{
+ size_t i;
+
+ for (i = 0; i < n; i++) {
+ struct qdist_entry *e = &dist->entries[i];
+
+ g_assert_cmpuint(e->count, ==, darr[i].count);
+ }
+}
+
+static void
+entries_insert(struct qdist *dist, const struct entry_desc *darr, size_t n)
+{
+ size_t i;
+
+ for (i = 0; i < n; i++) {
+ qdist_add(dist, darr[i].x, darr[i].count);
+ }
+}
+
+static void do_test_bin(const struct entry_desc *a, size_t n_a,
+ const struct entry_desc *b, size_t n_b)
+{
+ struct qdist qda;
+ struct qdist qdb;
+
+ qdist_init(&qda);
+
+ entries_insert(&qda, a, n_a);
+ qdist_inc(&qda, a[0].x);
+ qdist_add(&qda, a[0].x, -1);
+
+ g_assert_cmpuint(qdist_unique_entries(&qda), ==, n_a);
+ g_assert_cmpfloat(qdist_xmin(&qda), ==, a[0].x);
+ g_assert_cmpfloat(qdist_xmax(&qda), ==, a[n_a - 1].x);
+ histogram_check(&qda, a, n_a, 0);
+ histogram_check(&qda, a, n_a, n_a);
+
+ qdist_bin__internal(&qdb, &qda, n_b);
+ g_assert_cmpuint(qdb.n, ==, n_b);
+ entries_check(&qdb, b, n_b);
+ g_assert_cmpuint(qdist_sample_count(&qda), ==, qdist_sample_count(&qdb));
+ /*
+ * No histogram_check() for $qdb, since we'd rebin it and that is a bug.
+ * Instead, regenerate it from $qda.
+ */
+ histogram_check(&qda, b, n_b, n_b);
+
+ qdist_destroy(&qdb);
+ qdist_destroy(&qda);
+}
+
+static void do_test_pr(uint32_t opt)
+{
+ static const struct entry_desc desc[] = {
+ [0] = { 1, 900, 8 },
+ [1] = { 2, 1, 1 },
+ [2] = { 3, 2, 1 }
+ };
+ static const char border[] = "|";
+ const char *llabel = NULL;
+ const char *rlabel = NULL;
+ struct qdist dist;
+ GString *s;
+ char *str;
+ char *pr;
+ size_t n;
+
+ n = ARRAY_SIZE(desc);
+ qdist_init(&dist);
+
+ entries_insert(&dist, desc, n);
+ histogram_check(&dist, desc, n, 0);
+
+ s = g_string_new("");
+
+ if (opt & QDIST_PR_LABELS) {
+ unsigned int lopts = opt & (QDIST_PR_NODECIMAL |
+ QDIST_PR_PERCENT |
+ QDIST_PR_100X |
+ QDIST_PR_NOBINRANGE);
+
+ if (lopts == 0) {
+ llabel = "[1.0,1.7)";
+ rlabel = "[2.3,3.0]";
+ } else if (lopts == QDIST_PR_NODECIMAL) {
+ llabel = "[1,2)";
+ rlabel = "[2,3]";
+ } else if (lopts == (QDIST_PR_PERCENT | QDIST_PR_NODECIMAL)) {
+ llabel = "[1,2)%";
+ rlabel = "[2,3]%";
+ } else if (lopts == QDIST_PR_100X) {
+ llabel = "[100.0,166.7)";
+ rlabel = "[233.3,300.0]";
+ } else if (lopts == (QDIST_PR_NOBINRANGE | QDIST_PR_NODECIMAL)) {
+ llabel = "1";
+ rlabel = "3";
+ } else {
+ g_assert_cmpstr("BUG", ==, "This is not meant to be exhaustive");
+ }
+ }
+
+ if (llabel) {
+ g_string_append(s, llabel);
+ }
+ if (opt & QDIST_PR_BORDER) {
+ g_string_append(s, border);
+ }
+
+ str = pr_hist(desc, n);
+ g_string_append(s, str);
+ g_free(str);
+
+ if (opt & QDIST_PR_BORDER) {
+ g_string_append(s, border);
+ }
+ if (rlabel) {
+ g_string_append(s, rlabel);
+ }
+
+ str = g_string_free(s, FALSE);
+ pr = qdist_pr(&dist, n, opt);
+ g_assert_cmpstr(pr, ==, str);
+ g_free(pr);
+ g_free(str);
+
+ qdist_destroy(&dist);
+}
+
+static inline void do_test_pr_label(uint32_t opt)
+{
+ opt |= QDIST_PR_LABELS;
+ do_test_pr(opt);
+}
+
+static void test_pr(void)
+{
+ do_test_pr(0);
+
+ do_test_pr(QDIST_PR_BORDER);
+
+ /* 100X should be ignored because we're not setting LABELS */
+ do_test_pr(QDIST_PR_100X);
+
+ do_test_pr_label(0);
+ do_test_pr_label(QDIST_PR_NODECIMAL);
+ do_test_pr_label(QDIST_PR_PERCENT | QDIST_PR_NODECIMAL);
+ do_test_pr_label(QDIST_PR_100X);
+ do_test_pr_label(QDIST_PR_NOBINRANGE | QDIST_PR_NODECIMAL);
+}
+
+static void test_bin_shrink(void)
+{
+ static const struct entry_desc a[] = {
+ [0] = { 0.0, 42922, 7 },
+ [1] = { 0.25, 47834, 8 },
+ [2] = { 0.50, 26628, 0 },
+ [3] = { 0.625, 597, 4 },
+ [4] = { 0.75, 10298, 1 },
+ [5] = { 0.875, 22, 2 },
+ [6] = { 1.0, 2771, 1 }
+ };
+ static const struct entry_desc b[] = {
+ [0] = { 0.0, 42922, 7 },
+ [1] = { 0.25, 47834, 8 },
+ [2] = { 0.50, 27225, 3 },
+ [3] = { 0.75, 13091, 1 }
+ };
+
+ return do_test_bin(a, ARRAY_SIZE(a), b, ARRAY_SIZE(b));
+}
+
+static void test_bin_expand(void)
+{
+ static const struct entry_desc a[] = {
+ [0] = { 0.0, 11713, 5 },
+ [1] = { 0.25, 20294, 0 },
+ [2] = { 0.50, 17266, 8 },
+ [3] = { 0.625, 1506, 0 },
+ [4] = { 0.75, 10355, 6 },
+ [5] = { 0.833, 2, 1 },
+ [6] = { 0.875, 99, 4 },
+ [7] = { 1.0, 4301, 2 }
+ };
+ static const struct entry_desc b[] = {
+ [0] = { 0.0, 11713, 5 },
+ [1] = { 0.0, 0, 0 },
+ [2] = { 0.0, 20294, 8 },
+ [3] = { 0.0, 0, 0 },
+ [4] = { 0.0, 0, 0 },
+ [5] = { 0.0, 17266, 6 },
+ [6] = { 0.0, 1506, 1 },
+ [7] = { 0.0, 10355, 4 },
+ [8] = { 0.0, 101, 1 },
+ [9] = { 0.0, 4301, 2 }
+ };
+
+ return do_test_bin(a, ARRAY_SIZE(a), b, ARRAY_SIZE(b));
+}
+
+static void test_bin_precision(void)
+{
+ static const struct entry_desc a[] = {
+ [0] = { 0, 213549, 8 },
+ [1] = { 1, 70, 1 },
+ };
+ static const struct entry_desc b[] = {
+ [0] = { 0, 213549, 8 },
+ [1] = { 0, 70, 1 },
+ };
+
+ return do_test_bin(a, ARRAY_SIZE(a), b, ARRAY_SIZE(b));
+}
+
+static void test_bin_simple(void)
+{
+ static const struct entry_desc a[] = {
+ [0] = { 10, 101, 8 },
+ [1] = { 11, 0, 0 },
+ [2] = { 12, 2, 1 }
+ };
+ static const struct entry_desc b[] = {
+ [0] = { 0, 101, 8 },
+ [1] = { 0, 0, 0 },
+ [2] = { 0, 0, 0 },
+ [3] = { 0, 0, 0 },
+ [4] = { 0, 2, 1 }
+ };
+
+ return do_test_bin(a, ARRAY_SIZE(a), b, ARRAY_SIZE(b));
+}
+
+static void test_single_full(void)
+{
+ struct qdist dist;
+
+ qdist_init(&dist);
+
+ qdist_add(&dist, 3, 102);
+ g_assert_cmpfloat(qdist_avg(&dist), ==, 3);
+ g_assert_cmpfloat(qdist_xmin(&dist), ==, 3);
+ g_assert_cmpfloat(qdist_xmax(&dist), ==, 3);
+
+ histogram_check_single_full(&dist, 0);
+ histogram_check_single_full(&dist, 1);
+ histogram_check_single_full(&dist, 10);
+
+ qdist_destroy(&dist);
+}
+
+static void test_single_empty(void)
+{
+ struct qdist dist;
+ char *pr;
+
+ qdist_init(&dist);
+
+ qdist_add(&dist, 3, 0);
+ g_assert_cmpuint(qdist_sample_count(&dist), ==, 0);
+ g_assert(isnan(qdist_avg(&dist)));
+ g_assert_cmpfloat(qdist_xmin(&dist), ==, 3);
+ g_assert_cmpfloat(qdist_xmax(&dist), ==, 3);
+
+ pr = qdist_pr_plain(&dist, 0);
+ g_assert_cmpstr(pr, ==, " ");
+ g_free(pr);
+
+ pr = qdist_pr_plain(&dist, 1);
+ g_assert_cmpstr(pr, ==, " ");
+ g_free(pr);
+
+ pr = qdist_pr_plain(&dist, 2);
+ g_assert_cmpstr(pr, ==, " ");
+ g_free(pr);
+
+ qdist_destroy(&dist);
+}
+
+static void test_none(void)
+{
+ struct qdist dist;
+ char *pr;
+
+ qdist_init(&dist);
+
+ g_assert(isnan(qdist_avg(&dist)));
+ g_assert(isnan(qdist_xmin(&dist)));
+ g_assert(isnan(qdist_xmax(&dist)));
+
+ pr = qdist_pr_plain(&dist, 0);
+ g_assert_cmpstr(pr, ==, "(empty)");
+ g_free(pr);
+
+ pr = qdist_pr_plain(&dist, 2);
+ g_assert_cmpstr(pr, ==, "(empty)");
+ g_free(pr);
+
+ pr = qdist_pr(&dist, 0, QDIST_PR_BORDER);
+ g_assert_cmpstr(pr, ==, "(empty)");
+ g_free(pr);
+
+ qdist_destroy(&dist);
+}
+
+int main(int argc, char *argv[])
+{
+ g_test_init(&argc, &argv, NULL);
+ g_test_add_func("/qdist/none", test_none);
+ g_test_add_func("/qdist/single/empty", test_single_empty);
+ g_test_add_func("/qdist/single/full", test_single_full);
+ g_test_add_func("/qdist/binning/simple", test_bin_simple);
+ g_test_add_func("/qdist/binning/precision", test_bin_precision);
+ g_test_add_func("/qdist/binning/expand", test_bin_expand);
+ g_test_add_func("/qdist/binning/shrink", test_bin_shrink);
+ g_test_add_func("/qdist/pr", test_pr);
+ return g_test_run();
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-14 12:32:51 +0000