[vendor:glfw] Add test.

tests/vendor/build.bat

@@ -5,4 +5,9 @@ set PATH_TO_ODIN==..\..\odin
 echo ---
 echo Running vendor:botan tests
 echo ---
-%PATH_TO_ODIN% run botan %COMMON%
+%PATH_TO_ODIN% run botan %COMMON%
+
+echo ---
+echo Running vendor:glfw tests
+echo ---
+%PATH_TO_ODIN% run glfw %COMMON%

tests/vendor/glfw/test_vendor_glfw.odin

@@ -0,0 +1,45 @@
+package test_vendor_glfw
+
+import "core:testing"
+import "core:fmt"
+import "vendor:glfw"
+
+GLFW_MAJOR :: 3
+GLFW_MINOR :: 3
+GLFW_PATCH :: 4
+
+TEST_count := 0
+TEST_fail  := 0
+
+when ODIN_TEST {
+	expect  :: testing.expect
+	log     :: testing.log
+} else {
+	expect :: proc(t: ^testing.T, condition: bool, message: string, loc := #caller_location) {
+		fmt.printf("[%v] ", loc)
+		TEST_count += 1
+		if !condition {
+			TEST_fail += 1
+			fmt.println(message)
+			return
+		}
+		fmt.println(" PASS")
+	}
+	log :: proc(t: ^testing.T, v: any, loc := #caller_location) {
+		fmt.printf("[%v] ", loc)
+		fmt.printf("log: %v\n", v)
+	}
+}
+
+main :: proc() {
+	t := testing.T{}
+	test_glfw(&t)
+
+	fmt.printf("%v/%v tests successful.\n", TEST_count - TEST_fail, TEST_count)
+}
+
+@(test)
+test_glfw :: proc(t: ^testing.T) {
+	major, minor, patch := glfw.GetVersion()
+	expect(t, major == GLFW_MAJOR && minor == GLFW_MINOR, fmt.tprintf("Expected GLFW.GetVersion: %v.%v.%v, got %v.%v.%v instead", GLFW_MAJOR, GLFW_MINOR, GLFW_PATCH, major, minor, patch))
+}