1 files changed, 109 insertions, 1 deletions
diff --git a/tests/test-diff.cpp b/tests/test-diff.cpp
index b6b703a..7061ef0 100644
--- a/tests/test-diff.cpp
+++ b/tests/test-diff.cpp
@@ -4,6 +4,8 @@
 #include <string>
 #include <system_error>
 
+#include <stdlib.h>
+
 #include "libreichwein/file.h"
 
 #include "diff.h"
@@ -23,6 +25,112 @@ protected:
 
 TEST_F(DiffTest, constructor)
 {
- Diff diff{};
+ // empty constructor
+ {
+  Diff d{};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data/></diff>");
+ }
+
+ // constructor via xml diff
+ {
+  EXPECT_THROW(Diff d{""}, std::exception);
+ }
+ {
+  EXPECT_THROW(Diff d{"<diff><begin></begin></diff>"}, std::exception);
+  EXPECT_THROW(Diff d{"<diff><end>0</end><data>abc</data></diff>"}, std::exception);
+  EXPECT_THROW(Diff d{"<diff><start>0</start><data>abc</data></diff>"}, std::exception);
+  EXPECT_THROW(Diff d{"<diff><start>0</start><end>0</end></diff>"}, std::exception);
+  EXPECT_THROW(Diff d{"<diff><start>5</start><end>0</end><data>abc</data></diff>"}, std::exception);
+  EXPECT_THROW(Diff d{"<diff><start></start><end>0</end><data>abc</data></diff>"}, std::exception);
+ }
+
+ {
+  Diff d{"<diff><start>0</start><end>0</end><data>abc</data></diff>"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data>abc</data></diff>");
+ }
+
+ {
+  Diff d{"<diff><start>5</start><end>5</end><data>abc</data></diff>"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>5</start><end>5</end><data>abc</data></diff>");
+ }
+
+ {
+  Diff d{"<diff><start>5</start><end>50</end><data>abc</data></diff>"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>5</start><end>50</end><data>abc</data></diff>");
+ }
+
+ // constructor via versions
+ {
+  Diff d{"", ""};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data/></diff>");
+ }
+ {
+  Diff d{"a", "a"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data/></diff>");
+ }
+ {
+  Diff d{"a", "b"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>1</end><data>b</data></diff>");
+ }
+ {
+  Diff d{"0a1", "0b1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>2</end><data>b</data></diff>");
+ }
+ {
+  Diff d{"0abc1", "00b01"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>4</end><data>0b0</data></diff>");
+ }
+ {
+  Diff d{"0ab1", "00b01"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>3</end><data>0b0</data></diff>");
+ }
+ {
+  Diff d{"0abc1", "00b1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>4</end><data>0b</data></diff>");
+ }
+ {
+  Diff d{"0abc1", ""};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>5</end><data/></diff>");
+ }
+ {
+  Diff d{"bc1", "0abc1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data>0a</data></diff>");
+ }
+ {
+  Diff d{"0abc1", "0ab"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>3</start><end>5</end><data/></diff>");
+ }
+ {
+  Diff d{"0abc1", "0abc123"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>5</start><end>5</end><data>23</data></diff>");
+ }
+ {
+  Diff d{"0abc1", "010abc1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data>01</data></diff>");
+ }
+ {
+  Diff d{"0abc1", "0ac1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>2</start><end>3</end><data/></diff>");
+ }
+ {
+  Diff d{"0abc1", "0abxc1"};
+  EXPECT_EQ(d.get_xml(), "<diff><start>3</start><end>3</end><data>x</data></diff>");
+ }
+}
+
+TEST_F(DiffTest, diff_create)
+{
+ const char* result {diff_create("0abc1", "0ab")};
+
+ EXPECT_EQ(std::string(result), "<diff><start>3</start><end>5</end><data/></diff>");
+ free((void*)result); // this will be done by javascript side in real scenario
+}
+
+TEST_F(DiffTest, diff_apply)
+{
+ const char* result {diff_apply("0abc1", "<diff><start>3</start><end>5</end><data/></diff>")};
+
+ EXPECT_EQ(std::string(result), "0ab");
+ free((void*)result); // this will be done by javascript side in real scenario
 }