From 2a8013f3f9b085e1a3c2dbf3a4df20ecb9e6942f Mon Sep 17 00:00:00 2001
From: Enno Rehling <enno.rehling@gmail.com>
Date: Fri, 25 Mar 2016 17:05:01 +0100
Subject: [PATCH] fix bug 2194, poorly

---
 src/study.c      | 10 ++++---
 src/study.test.c | 70 ++++++++++++++++++++++++++++--------------------
 2 files changed, 47 insertions(+), 33 deletions(-)

diff --git a/src/study.c b/src/study.c
index 9b3dfc10c..f0a27606c 100644
--- a/src/study.c
+++ b/src/study.c
@@ -280,7 +280,7 @@ int teach_cmd(unit * u, struct order *ord)
     static const curse_type *gbdream_ct = NULL;
     plane *pl;
     region *r = u->region;
-    skill_t sk = NOSKILL;
+    skill_t sk_academy = NOSKILL;
     int teaching, i, j, count, academy = 0;
 
     if (gbdream_ct == 0)
@@ -322,6 +322,7 @@ int teach_cmd(unit * u, struct order *ord)
 
 #if TEACH_ALL
     if (getparam(u->faction->locale) == P_ANY) {
+        skill_t sk;
         unit *student;
         skill_t teachskill[MAXSKILLS];
         int t = 0;
@@ -380,6 +381,7 @@ int teach_cmd(unit * u, struct order *ord)
         init_order(ord);
 
         while (!parser_end()) {
+            skill_t sk;
             unit *u2;
             bool feedback;
 
@@ -472,15 +474,15 @@ int teach_cmd(unit * u, struct order *ord)
                     continue;
                 }
             }
-
+            sk_academy = sk;
             teaching -= teach_unit(u, u2, teaching, sk, false, &academy);
         }
         new_order = create_order(K_TEACH, u->faction->locale, "%s", zOrder);
         replace_order(&u->orders, ord, new_order);
         free_order(new_order);      /* parse_order & set_order have each increased the refcount */
     }
-    if (academy) {
-        academy_teaching_bonus(u, sk, academy);
+    if (academy && sk_academy!=NOSKILL) {
+        academy_teaching_bonus(u, sk_academy, academy);
     }
     return 0;
 }
diff --git a/src/study.test.c b/src/study.test.c
index 5859f9aa9..729981145 100644
--- a/src/study.test.c
+++ b/src/study.test.c
@@ -20,6 +20,34 @@
 
 #include <CuTest.h>
 
+#define MAXLOG 4
+typedef struct log_entry {
+    unit *u;
+    skill_t sk;
+    int days;
+} log_entry;
+
+static log_entry log_learners[MAXLOG];
+static int log_size;
+
+static void log_learn(unit *u, skill_t sk, int days) {
+    if (log_size < MAXLOG) {
+        log_entry * entry = &log_learners[log_size++];
+        entry->u = u;
+        entry->sk = sk;
+        entry->days = days;
+    }
+}
+
+void learn_inject(void) {
+    log_size = 0;
+    inject_learn(log_learn);
+}
+
+void learn_reset(void) {
+    inject_learn(0);
+}
+
 typedef struct {
     unit *u;
     unit *teachers[2];
@@ -134,8 +162,20 @@ static void test_study_bug_2194(CuTest *tc) {
     i_change(&u1->items, get_resourcetype(R_SILVER)->itype, 50);
     i_change(&u2->items, get_resourcetype(R_SILVER)->itype, 50);
     b->flags = BLD_WORKING;
+    learn_inject();
     teach_cmd(u, u->thisorder);
+    learn_reset();
+    CuAssertPtrEquals(tc, u, log_learners[0].u);
+    CuAssertIntEquals(tc, SK_CROSSBOW, log_learners[0].sk);
+    CuAssertIntEquals(tc, 1, log_size);
     CuAssertPtrNotNull(tc, test_find_messagetype(u->faction->msgs, "teach_asgood"));
+
+    free_order(u->thisorder);
+    u->thisorder = create_order(K_TEACH, loc, itoa36(u2->no));
+    learn_inject();
+    teach_cmd(u, u->thisorder);
+    learn_reset();
+    CuAssertIntEquals(tc, 0, log_size);
     test_cleanup();
 }
 
@@ -164,34 +204,6 @@ static void test_produceexp(CuTest *tc) {
     test_cleanup();
 }
 
-#define MAXLOG 4
-typedef struct log_entry {
-    unit *u;
-    skill_t sk;
-    int days;
-} log_entry;
-
-static log_entry log_learners[MAXLOG];
-static int log_size;
-
-static void log_learn(unit *u, skill_t sk, int days) {
-    if (log_size < MAXLOG) {
-        log_entry * entry = &log_learners[log_size++];
-        entry->u = u;
-        entry->sk = sk;
-        entry->days = days;
-    }
-}
-
-void learn_inject(void) {
-    log_size = 0;
-    inject_learn(log_learn);
-}
-
-void learn_reset(void) {
-    inject_learn(0);
-}
-
 static void test_academy_building(CuTest *tc) {
     unit *u, *u1, *u2;
     struct locale * loc;
@@ -507,6 +519,6 @@ CuSuite *get_study_suite(void)
     SUITE_ADD_TEST(suite, test_produceexp);
     SUITE_ADD_TEST(suite, test_academy_building);
     SUITE_ADD_TEST(suite, test_demon_skillchanges);
-    DISABLE_TEST(suite, test_study_bug_2194);
+    SUITE_ADD_TEST(suite, test_study_bug_2194);
     return suite;
 }